Nanostrukturierte Werkstoffe

Die Gruppe Nanostrukturierte Werkstoffe am Lehrstuhl WWI beschäftigt sich intensiv mit der Erzeugung und der Auswirkung einer nanoskaligen Mikrostruktur auf die Eigenschaften metallischer Werkstoffe. Dabei stehen die mechanischen Eigenschaften und die resultierenden Verformungsmechanismen im Vordergrund. Zur Erzeugung der Nanostruktur kommen dabei hauptsächlich Hochverformungsverfahren zum Zuge. Insbesondere das kumulierte Walzverfahren ARB (Accumulative Roll Bonding) wird intensiv genutzt, um nanostrukturierte Blechwerkstoffe zu erzeugen. Das Verfahren erlaubt es auch, Werkstoffeigenschaften zu gradieren bzw. gezielt maßzuschneidern. Neben der Erforschung von sogenannten monolithischen nanostrukturierten Werkstoffen bietet das ARB-Verfahren auch die Möglichkeit, sogenannte metallische Laminate (Layered Metallic Composites LMCs) herzustellen. Dabei werden chemisch unterschiedliche Werkstoffe im ARB-Prozess miteinander zu einem Laminat verbunden. Wie die Eigenschaften der LMCs von der Auswahl der Konstituenten und der entsprechenden Laminatarchitektur abhängen, ist Gegenstand derzeitiger Forschungsaktivitäten. Die Forschungsarbeiten zielen auf die Entwicklung eines vertieften Verständnisses zwischen dem Zusammenhang zwischen Nanostruktur, Mesostruktur und resultierenden Eigenschaften ab. Für die Untersuchung der Nano- und Mesostrukturen werden mikroskopische und analytische Verfahren, wie beispielsweise Lichtmikroskopie, Rasterelektronenmikroskopie und Transmissionselektronen­mikroskopie intensiv genutzt. Die mechanische Prüfung unter monotoner wie zyklischer Belastung (ggf. bei verschiedenen Temperaturen und Verformungsgeschwindigkeiten) auf der Nano- wie Makroskala erlaubt dann entsprechende Korrelationen zwischen mechanischen Eigenschaften und Verformungsmechanismen einerseits und den Nano- und Mesostrukturen andererseits.

Team

Prof. Dr.-Ing. Heinz Werner Höppel

Gruppenleiter Leichtmetalle & Mechanische Prüfung sowie Nanostrukturierte Werkstoffe, stellvertretender Lehrstuhlleiter

Department Werkstoffwissenschaften (WW)
Lehrstuhl für Werkstoffwissenschaften (Allgemeine Werkstoffeigenschaften)

• Telefon: +49 9131 85-27503
• E-Mail: hwe.hoeppel@fau.de

Prof. Dr. rer. nat. Mathias Göken

Lehrstuhlleiter, Gruppenleiter Nanomechanik

Department Werkstoffwissenschaften (WW)
Lehrstuhl für Werkstoffwissenschaften (Allgemeine Werkstoffeigenschaften)

• Telefon: +49 9131 85-27501
• E-Mail: mathias.goeken@fau.de

Sebastian Vollath, M. Sc.

Department Werkstoffwissenschaften (WW)
Lehrstuhl für Werkstoffwissenschaften (Allgemeine Werkstoffeigenschaften)

• Telefon: +49 9131 85-27474
• E-Mail: sebastian.vollath@fau.de

Aktuelle Forschungsprojekte

Einflüsse unterschiedlicher metallischer Laminatstrukturen auf das bruchmechanische Verhalten und Schädigungsmechanismen

Lamellare metallische Verbundwerkstoffe (LMCs, engl.: Laminated Metal Composites) bestehen aus alternierenden Metallschichten unterschiedlicher Legierungen, die über Grenzflächen miteinander verbunden sind.
Ziel bei der Herstellung von LMCs ist es, die günstigen Eigenschaften der jeweiligen Werkstoffe zu verbinden und im Idealfall Eigenschaften zu erhalten, die besser als der gewichtete Durchschnitt aus den einzelnen Komponenten sind.
→ Mehr Informationen

Publikationen

• Bach J., Stoiber M., Schindler L., Höppel HW., Göken M.:
  Deformation mechanisms and strain rate sensitivity of bimodal and ultrafine-grained copper
  In: Acta Materialia 186 (2020), S. 363-373
  ISSN: 1359-6454
  DOI: 10.1016/j.actamat.2019.12.044
• Höppel HW., Westermeyer M., Kümmel F., Göken M.:
  The Role of Interfaces on the Deformation Mechanisms in Bimodal Al Laminates Produced by Accumulative Roll Bonding
  In: Advanced Engineering Materials (2020)
  ISSN: 1438-1656
  DOI: 10.1002/adem.202000145
• Bachmaier A., Hohenwarter A., Höppel HW., Ivanisenko J.:
  Nanostructured Metallic Materials and Composites: Processes, Properties and Microstructures
  In: Advanced Engineering Materials 21 (2019), Art.Nr.: ARTN 1801073
  ISSN: 1438-1656
  DOI: 10.1002/adem.201801073
• Blum W., Dvorak J., Kral P., Eisenlohr P., Sklenicka V.:
  Quasi-Stationary Strength of ECAP-Processed Cu-Zr at 0.5 T-m
  In: Metals 9 (2019)
  ISSN: 2075-4701
  DOI: 10.3390/met9111149
• Blum W., Dvorak J., Kral P., Eisenlohr P., Sklencka V.:
  Strain Rate Contribution due to Dynamic Recovery of Ultrafine-Grained Cu-Zr as Evidenced by Load Reductions during Quasi-Stationary Deformation at 0.5 T-m
  In: Metals 9 (2019)
  ISSN: 2075-4701
  DOI: 10.3390/met9111150
• Kümmel F., Diepold B., Sauer KF., Schunk C., Prakash A., Höppel HW., Göken M.:
  High Lightweight Potential of Ultrafine-Grained Aluminum/Steel Laminated Metal Composites Produced by Accumulative Roll Bonding
  In: Advanced Engineering Materials (2018)
  ISSN: 1438-1656
  DOI: 10.1002/adem.201800286
• Medvedev AE., Lapovok R., Koch E., Höppel HW., Göken M.:
  Optimisation of interface formation by shear inclination: Example of aluminium-cooper hybrid produced by ECAP with back-pressure
  In: Materials & Design 146 (2018), S. 142-151
  ISSN: 0264-1275
  DOI: 10.1016/j.matdes.2018.03.021
• Schunk C., Nitschky M., Höppel HW., Göken M.:
  Superior Mechanical Properties of Aluminum–Titanium Laminates in Terms of Local Hardness and Strength
  In: Advanced Engineering Materials (2018)
  ISSN: 1438-1656
  DOI: 10.1002/adem.201800546
• Kümmel F., Höppel HW., Göken M.:
  Layer architecture and fatigue life of ultrafine-grained laminated metal composites consisting of different aluminum alloys
  In: Materials Science and Engineering A-Structural Materials Properties Microstructure and Processing 702 (2017), S. 406-413
  ISSN: 0921-5093
  DOI: 10.1016/j.msea.2017.06.105
• Kümmel F., Tegtmeier TS., Höppel HW., Göken M.:
  Optimized layer architecture for an extended fatigue life of ultrafine-grained AA1050/AA5005 laminated metal composites
  In: IOP Conference Series: Materials Science and Engineering 194 (2017), S. 012036
  ISSN: 1757-8981
  DOI: 10.1088/1757-899X/194/1/012036
• Höppel HW.:
  Ultrafine-grained Metals
  MDPI Basel, 2017
  ISBN: 978-3-03842-524-3
• Kümmel F., Hausöl T., Höppel HW., Göken M.:
  Enhanced fatigue lives in AA1050A/AA5005 laminated metal composites produced by accumulative roll bonding
  In: Acta Materialia 120 (2016), S. 150-158
  ISSN: 1359-6454
  DOI: 10.1016/j.actamat.2016.08.039
• Ruppert M., Schunk C., Hausmann D., Höppel HW., Göken M.:
  Global and local strain rate sensitivity of bimodal Al-laminates produced by accumulative roll bonding
  In: Acta Materialia 103 (2016), S. 643-650
  ISSN: 1359-6454
  DOI: 10.1016/j.actamat.2015.11.009
• Ma X., Huang C., Moering J., Ruppert M., Höppel HW., Göken M., Narayan J., Zhu Y.:
  Mechanical properties of copper/bronze laminates: Role of interfaces
  In: Acta Materialia 116 (2016), S. 43-52
  ISSN: 1359-6454
  DOI: 10.1016/j.actamat.2016.06.023
• Kümmel F., Kreuz M., Hausöl T., Höppel HW., Göken M.:
  Microstructure and Mechanical Properties of Accumulative Roll-Bonded AA1050A/AA5005 Laminated Metal Composites
  In: Metals 6 (2016)
  ISSN: 2075-4701
  DOI: 10.3390/met6030056
• Nguyen H., Boehm W., Tsoupis I., Göken M., Höppel HW., Schmidt C., Hausöl T., Ruppert M., Merklein M.:
  Tailored heat treated accumulative roll bonded aluminum blanks: failure under bending stresses
  In: Production Engineering 10 (2016), S. 399-407
  ISSN: 0944-6524
  DOI: 10.1007/s11740-016-0685-4
• Prakash A., Nöhring WG., Lebensohn RA., Höppel HW., Bitzek E.:
  A multiscale simulation framework of the accumulative roll bonding process accounting for texture evolution
  In: Materials Science and Engineering A-Structural Materials Properties Microstructure and Processing 631 (2015), S. 104-119
  ISSN: 0921-5093
  DOI: 10.1016/j.msea.2015.02.005
• Blum W., Dvorak J., Kral P., Petrenec M., Eisenlohr P., Sklenicka V.:
  In situ study of microstructure and strength of severely predeformed pure Cu in deformation at 573K
  In: Philosophical Magazine 95 (2015), S. 3696-3711
  ISSN: 1478-6435
  DOI: 10.1080/14786435.2015.1096025
• Ruppert M., Strebl M., Höppel HW., Göken M.:
  Mechanical properties of ultrafine-grained AlZnMg(Cu)-alloys AA7020 and AA7075 processed by accumulative roll bonding
  In: Journal of Materials Science 50 (2015), S. 4422-4429
  ISSN: 0022-2461
  DOI: 10.1007/s10853-015-9008-y
• Ruppert M., Freund L., Wenzl T., Höppel HW., Göken M.:
  Ultrafine-grained austenitic stainless steels X4CrNi18-12 and X8CrMnNi19-6-3 produced by accumulative roll bonding
  In: Metals 5 (2015), S. 730-742
  ISSN: 2075-4701
  DOI: 10.3390/met5020730
• Höppel HW.:
  Ultrafine-Grained Metals
  In: Metals 5 (2015), S. 2393-2396
  ISSN: 2075-4701
• Blum W., Dvorak J., Kral P., Eisenlohr P., Sklenicka V.:
  Effect of grain refinement by ECAP on creep of pure Cu
  In: Materials Science and Engineering A-Structural Materials Properties Microstructure and Processing 590 (2014), S. 423-432
  ISSN: 0921-5093
  DOI: 10.1016/j.msea.2013.10.022
• Ruppert M., Höppel HW., Göken M.:
  Influence of cross-rolling on the mechanical properties of an accumulative roll bonded aluminum alloy AA6014
  In: Materials Science and Engineering A-Structural Materials Properties Microstructure and Processing 597 (2014), S. 122-127
  ISSN: 0921-5093
  DOI: 10.1016/j.msea.2013.12.075
• Lapovok R., Qi Y., Ng HP., Maier V., Estrin Y.:
  Multicomponent materials from machining chips compacted by equal-channel angular pressing
  In: Journal of Materials Science 49 (2014), S. 1193-1204
  ISSN: 0022-2461
  DOI: 10.1007/s10853-013-7801-z
• Marr T., Freudenberger J., Maier V., Höppel HW., Göken M., Schultz L.:
  The Strengthening Effect of Phase Boundaries in a Severely Plastically Deformed Ti-Al Composite Wire
  In: Metals 4 (2014), S. 37-54
  ISSN: 2075-4701
  DOI: 10.3390/met4010037
• Wheeler JM., Maier V., Durst K., Göken M., Michler J.:
  Activation parameters for deformation of ultrafine-grained aluminium as determined by indentation strain rate jumps at elevated temperature
  In: Materials Science and Engineering A-Structural Materials Properties Microstructure and Processing 585 (2013), S. 108-113
  ISSN: 0921-5093
  DOI: 10.1016/j.msea.2013.07.033
• Hoi Pang Ng ., Przybilla T., Schmidt C., Lapovok R., Orlov D., Höppel HW., Göken M.:
  Asymmetric accumulative roll bonding of aluminium-titanium composite sheets
  In: Materials Science and Engineering A-Structural Materials Properties Microstructure and Processing 576 (2013), S. 306-315
  ISSN: 0921-5093
  DOI: 10.1016/j.msea.2013.04.027
• Niendorf T., Boehner A., Höppel HW., Göken M., Valiev RZ., Maier HJ.:
  Comparison of the monotonic and cyclic mechanical properties of ultrafine-grained low carbon steels processed by continuous and conventional equal channel angular pressing
  In: Materials & Design 47 (2013), S. 138-142
  ISSN: 0264-1275
  DOI: 10.1016/j.matdes.2012.12.025
• Göken M., Hausöl T., Höppel HW.:
  Fatigue Life, Cyclic Deformation Behaviour and Damage Mechanisms of Ultrafine-Grained AA5754 Aluminum Alloy Produced by Accumulative Roll Bonding
  In: T. Beck , E. Charkaluk E. (Hrsg.): Proceedings of the 7th International Conference on Low Cycle Fatigue 2013
• Bach J., Liebig JP., Höppel HW., Blum W.:
  Influence of grain boundaries on the deformation resistance: Insights from an investigation of deformation kinetics and microstructure of copper after predeformation by ECAP
  In: Philosophical Magazine 93 (2013), S. 4331-4354
  ISSN: 0031-8086
  DOI: 10.1080/14786435.2013.828161
• Ruppert M., Böhm W., Nguyen H., Höppel HW., Merklein M., Göken M.:
  Influence of upscaling accumulative roll bonding on the homogeneity and mechanical properties of AA1050A
  In: Journal of Materials Science 48 (2013), S. 8377-8385
  ISSN: 0022-2461
  DOI: 10.1007/s10853-013-7648-3
• Chekhonin P., Scharnweber J., Scharnweber M., Oertel C-., Hausöl T., Höppel HW., Jaschinski J., Marr T., Skrotzki W.:
  Mechanical properties of aluminium laminates produced by accumulative roll bonding
  In: Crystal Research and Technology 48 (2013), S. 532-537
  ISSN: 0232-1300
  DOI: 10.1002/crat.201300121
• Ast J., Durst K.:
  Nanoforming behaviour and microstructural evolution during nanoimprinting of ultrafine-grained and nanocrystalline metals
  In: Materials Science and Engineering A-Structural Materials Properties Microstructure and Processing 568 (2013), S. 68-75
  ISSN: 0921-5093
  DOI: 10.1016/j.msea.2012.11.056
• Kurtovic A., Niendorf T., Hausöl T., Höppel HW., Göken M., Maier HJ.:
  Surface strain evolution of ultrafine-grained aluminum alloy laminates under tension-Microscale plastic instabilities and the Portevin-Le Chatelier effect
  In: Scripta Materialia 68 (2013), S. 809-812
  ISSN: 1359-6462
  DOI: 10.1016/j.scriptamat.2013.01.036
• Kalsar R., Yadav D., Sharma A., Brokmeier HG., May J., Höppel HW., Skrotzki W., Suwas S.:
  Effect of Mg content on microstructure, texture and strength of severely equal channel angular pressed aluminium-magnesium alloys
  In: Materials Science and Engineering A-Structural Materials Properties Microstructure and Processing 797 (2020), Art.Nr.: 140088
  ISSN: 0921-5093
  DOI: 10.1016/j.msea.2020.140088
• Guo W., Jaegle E., Yao J., Maier V., Korte S., Schneider JM., Raabe D.:
  Intrinsic and extrinsic size effects in the deformation of amorphous CuZr/nanocrystalline Cu nanolaminates
  In: Acta Materialia 80 (2014), S. 94-106
  ISSN: 1359-6454
  DOI: 10.1016/j.actamat.2014.07.027
• Chekhonin P., Beausir B., Scharnweber J., Oertel CG., Hausöl T., Höppel HW., Brokmeier HG., Skrotzki W.:
  Confined recrystallization of high-purity aluminium during accumulative roll bonding of aluminium laminates
  In: Acta Materialia 60 (2012), S. 4661-4671
  ISSN: 1359-6454
  DOI: 10.1016/j.actamat.2012.04.004
• Schmidt C., Ruppert M., Höppel HW., Nachtrab F., Dietrich A., Hanke R., Göken M.:
  Design of graded materials by particle reinforcement during accumulative roll bonding
  In: Advanced Engineering Materials 14 (2012), S. 1009-1017
  ISSN: 1438-1656
  DOI: 10.1002/adem.201200046
• Hausöl T., Schmidt C., Maier V., Böhm W., Nguyen MH., Merklein M., Höppel HW., Göken M.:
  Formability of ultrafine-grained AA6016 sheets processed by accumulative roll bonding
  In: Key Engineering Materials 504-506 (2012), S. 575-580
  ISSN: 1013-9826
  DOI: 10.4028/www.scientific.net/KEM.504-506.575
• Göken Mathias, Höppel Heinz Werner, Hausöl Tina, Bach Jochen, Maier Verena, Schmidt Christian W., Amberger Dorothea:
  Grain refinement and deformation mechanisms in heterogeneous ultrafine-grained materials processed by accumulative roll bonding
  Proceedings of the 33rd Risø International Symposium on Materials Science
  In: Nanometals - status and perspective 2012
• Böhner A., Höppel HW., May J., Göken M.:
  Influence of the ECAP processing parameters on the cyclic deformation behavior on ultrafine-grained cubic face centered metals
  In: Advanced Engineering Materials 14 (2012), S. 842-847
  ISSN: 1438-1656
  DOI: 10.1002/adem.201100217
• Göken M., Webler R., Krottenthaler M., Neumeier S., Durst K.:
  Local Fracture Toughness and Residual Stress Measurements on NiAl Bond Coats by Micro Cantilever and FIB Based Bar Milling Tests
  John Wiley and Sons, 2012
  ISBN: 9780470943205
  DOI: 10.1002/9781118516430.ch10
• Chekhonin P., Beausir B., Scharnweber J., Oertel CG., Jaschinski J., Hausöl T., Höppel HW., Brokmeier HG., Skrotzki W.:
  Mechanical anisotropy of aluminium laminates produced by ARB
  In: Materials Science Forum 702-703 (2012), S. 151-156
  ISSN: 0255-5476
  DOI: 10.4028/www.scientific.net/MSF.702-703.151
• Höppel HW., Pippan R., Motz C., Le Bourhis E.:
  Nanostructured materials
  In: Advanced Engineering Materials 14 (2012)
  ISSN: 1438-1656
  DOI: 10.1002/adem.201200306
• Maier V., Hausöl T., Schmidt C., Böhm W., Hung Nguyen ., Merklein M., Höppel HW., Göken M.:
  Tailored heat treated accumulative roll bonded aluminum blanks: Microstructure and mechanical behavior
  In: Metallurgical and Materials Transactions A-Physical Metallurgy and Materials Science 43 (2012), S. 3097-3107
  ISSN: 1073-5623
  DOI: 10.1007/s11661-012-1151-3
• Hausöl T., Höppel HW., Göken M.:
  Ultrafine-grained AA6014/AA5754 laminates produced by accumulative roll bonding (ARB)
  In: Materialwissenschaft und Werkstofftechnik 43 (2012), S. 334-339
  ISSN: 0933-5137
  DOI: 10.1002/mawe.201200950
• Schmidt C., Knieke C., Maier V., Höppel HW., Peukert W., Göken M.:
  Accelerated grain refinement during accumulative roll bonding by nanoparticle reinforcement
  In: Scripta Materialia 64 (2011), S. 245--248
  ISSN: 1359-6462
  DOI: 10.1016/j.scriptamat.2010.10.013
• Korn M., Lapovok R., Böhner A., Höppel HW., Mughrabi H.:
  Bimodal grain size distributions in UFG materials produced by SPD - Their evolution and effect on the fatigue and monotonic strength properties
  In: Kovove Materialy-Metallic Materials 49 (2011), S. 51-63
  ISSN: 0023-432X
  DOI: 10.4149/km-2011-1-51
• Blum W., Zeng XH.:
  Corrigendum to “A simple dislocation model of deformation resistance of ultrafine-grained materials explaining Hall-Petch strengthening and enhanced strain rate sensitivity” (Acta Materialia (2009) 57 (1966-1974))
  In: Acta Materialia 59 (2011)
  ISSN: 1359-6454
  DOI: 10.1016/j.actamat.2011.05.032
• Blum W., Li YJ., Zhang Y., Wang JT.:
  Deformation resistance in the transition from coarse-grained to ultrafine-grained Cu by severe plastic deformation up to 24 passes of ECAP
  In: Materials Science and Engineering A-Structural Materials Properties Microstructure and Processing 528 (2011), S. 8621-8627
  ISSN: 0921-5093
  DOI: 10.1016/j.msea.2011.08.010
• Blum W., Zeng XH.:
  Erratum: A simple dislocation model of deformation resistance of ultrafine-grained materials explaining Hall-Petch strengthening and enhanced strain rate sensitivity (Acta Materialia (2009) 57 (1966-1974))
  In: Acta Materialia 59 (2011), S. 6205-6206
  ISSN: 1359-6454
  DOI: 10.1016/j.actamat.2011.05.032
• Göken M., Höppel HW.:
  Fatigue behaviour in nanostructured metals
  Elsevier Ltd., 2011
  ISBN: 9781845696702
  DOI: 10.1533/9780857091123.3.507
• Höppel HW., Kriebel F., Lapovok R., Boehner A., Göken M.:
  Influence of backpressure during ECAP on the monotonic and cyclic deformation behavior of AA5754 and Cu99.5
  13 (2011), S. 269-274
  ISSN: 1438-1656
  DOI: 10.1002/adem.201000269
• Schmidt C., Knieke C., Maier V., Höppel HW., Peukert W., Göken M.:
  Influence of Nanoparticle Reinforcement on the Mechanical Properties of Ultrafine-Grained Aluminium Produced by ARB
  In: Materials Science Forum 667-669 (2011), S. 725--730
  ISSN: 0255-5476
  DOI: 10.4028/www.scientific.net/MSF.667-669.725
• Hausöl T., Höppel HW., Göken M.:
  Microstructure and mechanical properties of accumulative roll bonded AA6014/AA5754 aluminium laminates
  In: Materials Science Forum 667-669 (2011), S. 217-222
  ISSN: 0255-5476
  DOI: 10.4028/www.scientific.net/MSF.667-669.217
• Maier V., Durst K., Müller J., Backes B., Höppel HW., Göken M.:
  Nanoindentation strain-rate jump tests for determining the local strain-rate sensitivity in nanocrystalline Ni and ultrafine-grained Al
  In: Journal of Materials Research 26 (2011), S. 1421-1430
  ISSN: 0884-2914
  DOI: 10.1557/jmr.2011.156
• Schmidt C.W., Knödler P., Höppel H.W., Göken M.:
  Particle based alloying by accumulative roll bonding in the system Al-Cu
  In: Metals 1 (2011), S. 65-78
  ISSN: 2075-4701
  DOI: 10.3390/met1010065
• Blum W., Eisenlohr P.:
  Structure evolution and deformation resistance in production and application of ultrafine-grained materials - The concept of steady-state grains
  In: Materials Science Forum 683 (2011), S. 163-181
  ISSN: 0255-5476
  DOI: 10.4028/www.scientific.net/MSF.683.163
• Göken M., Höppel HW.:
  Tailoring nanostructured, graded, and particle-reinforced Al laminates by accumulative roll bonding
  In: Advanced Materials 23 (2011), S. 2663-2668
  ISSN: 0935-9648
  DOI: 10.1002/adma.201100407
• Schneibel J.H., Heilmaier M., Blum W., Hasemann G., Shanmugasundaram T.:
  Temperature dependence of the strength of fine- and ultrafine-grained materials
  In: Acta Materialia 59 (2011), S. 1300-1308
  ISSN: 1359-6454
  DOI: 10.1016/j.actamat.2010.10.062
• Blum W., Eisenlohr P.:
  A simple dislocation model of the influence of high-angle boundaries on the deformation behavior of ultrafine-grained materials
  In: Journal of Physics : Conference Series 240 (2010)
  ISSN: 1742-6588
  DOI: 10.1088/1742-6596/240/1/012136
• Höppel HW., Korn M., Lapovok R., Mughrabi H.:
  Bimodal grain size distributions in UFG materials produced by SPD: Their evolution and effect on mechanical properties
  DOI: 10.1088/1742-6596/240/1/012147
• Vevecka-Priftaj A., Höppel HW., Göken M.:
  Deformation behaviour of nanocrystalline al alloy, processed by severe plastic deformation
  7th International Conference of the Balkan Physical Union (Alexandroupolis)
  DOI: 10.1063/1.3322399
• Mompiou F., Legros M., Caillard D., Mughrabi H.:
  In situ TEM observations of reverse dislocation motion upon unloading of tensile-deformed UFG aluminium
  In: Journal of Physics : Conference Series 240 (2010)
  ISSN: 1742-6588
  DOI: 10.1088/1742-6596/240/1/012137
• Brunner J., May J., Höppel HW., Göken M., Virtanen S.:
  Localized corrosion of ultrafine-grained Al-Mg model alloys
  In: Electrochimica Acta 55 (2010), S. 1966-1970
  ISSN: 0013-4686
  DOI: 10.1016/j.electacta.2009.11.016
• Hausöl T., Höppel HW., Göken M.:
  Microstructure and mechanical properties of accumulative roll bonded aluminium alloy AA5754
  In: Journal of Physics: Conference Series 240 (2010), Art.Nr.: 012128
  ISSN: 1742-6588
  DOI: 10.1088/1742-6596/240/1/012128
• Maier V., Höppel HW., Göken M.:
  Nanomechanical behaviour of Al-Ti layered composites produced by accumulative roll bonding
  In: Journal of Physics: Conference Series 240 (2010), Art.Nr.: 012108
  ISSN: 1742-6588
  DOI: 10.1088/1742-6596/240/1/012108
• Skrotzki W., Scharnweber J., Oertel C-., Höppel HW., Topic I., Brokmeier H-., Jaschinski J.:
  Plastic anisotropy of ultrafine grained Al alloy AA6016 produced by accumulative roll bonding
  In: Solid State Phenomena 160 (2010), S. 171-176
  ISSN: 1012-0394
  DOI: 10.4028/www.scientific.net/SSP.160.171
• Zhu YT., Mathaudhu SN., Göken M., Langdon TG., Lowe TC., Semiatin SL., Tsuji N., Zhao YH.:
  Preface to the special issue on ultrafine grained materials
  In: Journal of Materials Science 45 (2010), S. 4543-4544
  ISSN: 0022-2461
  DOI: 10.1007/s10853-010-4709-8
• Hausöl T., Maier V., Schmidt C., Winkler M., Höppel HW., Göken M.:
  Tailoring materials properties by accumulative roll bonding
  In: Advanced Engineering Materials 12 (2010), S. 740-746
  ISSN: 1438-1656
  DOI: 10.1002/adem.201000044
• Hausöl T., Höppel HW., Göken M.:
  Tailoring materials properties of UFG aluminium alloys by accumulative roll bonded sandwich-like sheets
  In: Journal of Materials Science 45 (2010), S. 4733-4738
  ISSN: 0022-2461
  DOI: 10.1007/s10853-010-4678-y
• Scharnweber J., Skrotzki W., Oertel CG., Brokmeier HG., Höppel HW., Topic I., Jaschinski J.:
  Texture, microstructure and mechanical properties of ultrafine grained aluminum produced by accumulative roll bonding
  In: Advanced Engineering Materials 12 (2010), S. 989-994
  ISSN: 1438-1656
  DOI: 10.1002/adem.201000067
• Blum W., Zeng X.:
  A simple dislocation model of deformation resistance of ultrafine-grained materials explaining Hall-Petch strengthening and enhanced strain rate sensitivity
  In: Acta Materialia 57 (2009), S. 1966-1974
  ISSN: 1359-6454
  DOI: 10.1016/j.actamat.2008.12.041
• Saitova LR., Höppel HW., Göken M., Semenova IP., Valiev RZ.:
  Cyclic deformation behavior and fatigue lives of ultrafine-grained Ti-6AL-4V ELI alloy for medical use
  In: International Journal of Fatigue 31 (2009), S. 322-331
  ISSN: 0142-1123
  DOI: 10.1016/j.ijfatigue.2008.08.007
• Saitova LR., Höppel HW., Göken M., Semenova IP., Raab GI., Valiev RZ.:
  Fatigue behavior of ultrafine-grained Ti-6Al-4V 'ELI' alloy for medical applications
  In: Materials Science and Engineering A-Structural Materials Properties Microstructure and Processing 503 (2009), S. 145-147
  ISSN: 0921-5093
  DOI: 10.1016/j.msea.2008.04.082
• Höppel HW., Mughrabi H., Vinogradov A.:
  Fatigue Properties of Bulk Nanostructured Materials
  John Wiley and Sons, 2009
  ISBN: 9783527315246
  DOI: 10.1002/9783527626892.ch22
• Topic I., Höppel HW., Göken M.:
  Friction stir welding of accumulative roll-bonded commercial-purity aluminium AA1050 and aluminium alloy AA6016
  In: Materials Science and Engineering A-Structural Materials Properties Microstructure and Processing 503 (2009), S. 163-166
  ISSN: 0921-5093
  DOI: 10.1016/j.msea.2007.12.057
• Blum W., Li Y., Durst K.:
  Stability of ultrafine-grained Cu to subgrain coarsening and recrystallization in annealing and deformation at elevated temperatures
  In: Acta Materialia 57 (2009), S. 5207-5217
  ISSN: 1359-6454
  DOI: 10.1016/j.actamat.2009.07.030
• Saitova L., Semenova I., Höppel HW., Valiev R., Göken M.:
  Enhanced superplastic deformation behavior of ultrafine-grained Ti-6Al-4V alloy
  In: Materialwissenschaft und Werkstofftechnik 39 (2008), S. 367-370
  ISSN: 0933-5137
  DOI: 10.1002/mawe.200800308
• Topic I., Höppel HW., Staud D., Merklein M., Geiger M., Göken M.:
  Formability of accumulative roll bonded aluminum AA1050 and AA6016 investigated using bulge tests
  In: Advanced Engineering Materials 10 (2008), S. 1101-1109
  ISSN: 1438-1656
  DOI: 10.1002/adem.200800167
• Hueller M., Vlcek J., Dinkel M., Höppel HW., Göken M.:
  Hardening and thermal stability of nanocrystalline AlMg4.8 powder
  In: Philosophical Magazine 88 (2008), S. 1209-1226
  ISSN: 0031-8086
  DOI: 10.1080/14786430802089854
• Topic I., Höppel HW., Göken M.:
  Influence of rolling direction on strength and ductility of aluminium and aluminium alloys produced by accumulative roll bonding
  In: Journal of Materials Science 43 (2008), S. 7320-7325
  ISSN: 0022-2461
  DOI: 10.1007/s10853-008-2754-3
• May J., Amberger D., Dinkel M., Höppel HW., Göken M.:
  Monotonic and cyclic deformation behaviour of ultrafine-grained aluminium
  In: Materials Science and Engineering A-Structural Materials Properties Microstructure and Processing 483-484 (2008), S. 481-484
  ISSN: 0921-5093
  DOI: 10.1016/j.msea.2006.12.177
• Li Y., Zeng X., Blum W.:
  On the elevated-temperature deformation behavior of polycrystalline Cu subjected to predeformation by multiple compression
  In: Materials Science and Engineering A-Structural Materials Properties Microstructure and Processing 483-484 (2008), S. 547-550
  ISSN: 0921-5093
  DOI: 10.1016/j.msea.2006.09.133
• Li Y.J., Kapoor R., Wang J.T., Blum W.:
  Structural stability of ultrafine-grained copper
  In: Scripta Materialia 58 (2008), S. 53-56
  ISSN: 1359-6462
  DOI: 10.1016/j.scriptamat.2007.08.033
• Skrotzki W., Hünsche I., Hüttenrauch J., Oertel CG., Brokmeier HG., Höppel HW., Topic I.:
  Texture and mechanical anisotropy of ultrafine-grained aluminum alloy AA6016 produced by accumulative roll bonding
  In: Texture, Stress, and Microstructure 2008 (2008)
  ISSN: 1687-5397
  DOI: 10.1155/2008/328754
• Broedling NC., Hartmaier A., Buehler MJ., Gao H.:
  The strength limit in a bio-inspired metallic nanocomposite
  In: Journal of the Mechanics and Physics of Solids 56 (2008), S. 1086-1104
  ISSN: 0022-5096
  DOI: 10.1016/j.jmps.2007.06.006
• Dinkel M., Pyczak F., May J., Höppel HW., Göken M.:
  XRD profile analysis characterization of ultrafine grained Al-Mg alloys
  In: Journal of Materials Science 43 (2008), S. 7481-7487
  ISSN: 0022-2461
  DOI: 10.1007/s10853-008-2859-8
• Mughrabi H., Höppel HW., Kautz M., Valiev R.:
  Annealing treatments to enhance thermal and mechanical stability of ultrafine-grained metals produced by severe plastic deformation
  In: Zeitschrift für Metallkunde 94 (2003), S. 1079-1083
  ISSN: 0044-3093
  DOI: 10.3139/146.031079
• Höppel Heinz Werner, Kautz Martin, Xu Cheng, Barta-Schreiber Nicole, Langdon Terry G., Mughrabi Hael:
  Cyclic deformation behaviour and possibilities for enhancing the fatigue properties of ultrafine-grained metals
  NANOSPD2 (Wien)
  In: Proc. of the Conf. "Nanomaterials by Severe Plastic Deformation – NANOSPD2”, Weinheim: 2004
• Göken M., Höppel HW., May J.:
  Enhanced strength and ductility in ultrafine-grained aluminium produced by accumulative roll bonding (ARB)
  In: Advanced Engineering Materials 6 (2004), S. 781-784
  ISSN: 1438-1656
• Mughrabi Hael, Höppel Heinz Werner, Kautz Martin:
  Fatigue and microstructure of ultrafine-grained metals produced by severe plastic deformation
  In: Scripta Materialia 51 (2004), S. 807-812
  ISSN: 1359-6462
  DOI: 10.1016/j.scriptamat.2004.05.012
• Höppel Heinz Werner, Kautz Martin, Mughrabi Hael:
  Fatigue lives and cyclic deformation behaviour of ultrafine-grained metals and alloys
  DVM/DFG-Abschlusskolloquium "Lebensdauervorhersage” (Berlin)
  In: DVM/DFG-Abschlusskolloquium "Lebensdauervorhersage”, Berlin: 2004
• Schweitzer Elmar, Durst Karsten, Amberger Doris , Göken Mathias:
  The Mechanical Properties in the Vicinity of grain boundaries in ultrafine-grained and Polycrystalline Materials Studied by Nanoindentations
  In: Materials Research Society Symposium - Proceedings 821 (2004), S. P4.91-P 4.9.6
  ISSN: 0272-9172
• Höppel Heinz Werner, Brunnbauer M., Mughrabi Hael, Valiev R.Z., Zhilyaev A.P.:
  Cyclic deformation behaviour of ultrafine grain size copper produced by equal channel angular extrusion;
  ~ (Frankfurt)
  In: Materials Week 2000 Proceedings 2001
  URL: http://www.materialsweek.org/proceedings
• Pohl P., Kümmel F., Schunk C., Serrano-Munoz I., Markötter H., Göken M., Höppel HW.:
  About the role of interfaces on the fatigue crack propagation in laminated metallic composites
  In: Materials 14 (2021), Art.Nr.: 2564
  ISSN: 1996-1944
  DOI: 10.3390/ma14102564
• Kümmel F., Höppel HW., Göken M.:
  Ultrafine-Grained Laminated Metal Composites: A New Material Class for Tailoring Cyclically Stressed Components
  In: Advanced Engineering Materials (2021)
  ISSN: 1438-1656
  DOI: 10.1002/adem.202100070
• Ding H.-Z., Mughrabi Hael, Höppel Heinz Werner:
  A low-cycle fatigue life predication model of ultrafine-grained metals
  In: Fatigue & Fracture of Engineering Materials & Structures 25 (2002), S. 975-984
  ISSN: 8756-758X
• Höppel Heinz Werner, Zhou Z.M., Mughrabi Hael, Valiev R.V.:
  Microstructural study of the parameters governing coarsening and cyclic softening in fatigued ultrafine-grained copper
  In: Philosophical Magazine A (2002), S. 1781-1794
  ISSN: 0141-8610
  DOI: 10.1080/01418610210131399
• Höppel Heinz Werner, Valiev R.Z.:
  On the possibilities to enhance the fatigue properties of ultrafine-grained metals
  In: Zeitschrift für Metallkunde 93 (2002), S. 641-648
  ISSN: 0044-3093
• Wang X., Qu M., Wu K., Schubert DW., Liu XH.:
  High sensitive electrospun thermoplastic polyurethane/carbon nanotubes strain sensor fitting by a novel optimization empirical model
  In: Advanced Composites and Hybrid Materials 6 (2023), Art.Nr.: 63
  ISSN: 2522-0128
  DOI: 10.1007/s42114-023-00648-x
• Saitova LR., Höppel HW., Göken M., Semenova IP., Raab GI., Valiev RZ.:
  Fatigue behavior of ultrafine-grained Ti-6Al-4V 'ELI' alloy for medical applications
  In: Materials Science and Engineering A-Structural Materials Properties Microstructure and Processing 503 (2009), S. 145-147
  ISSN: 0921-5093
  DOI: 10.1016/j.msea.2008.04.082
• Höppel HW., May J., Eisenlohr P., Göken M.:
  Strain-rate sensitivity of ultrafine-grained materials
  In: International Journal of Materials Research 96 (2022), S. 566-571
  ISSN: 1862-5282
  DOI: 10.3139/ijmr-2005-0101
• Pohl P., Kuglstatter M., Göken M., Höppel HW.:
  Quantifying Co-Deformation Effects in Metallic Laminates by Loading–Unloading–Reloading Tensile Tests
  In: Metals 13 (2023), S. 1049
  ISSN: 2075-4701
  DOI: 10.3390/met13061049
• Zhao M., Schlueter K., Wurmshuber M., Reitgruber M., Kiener D.:
  Open-cell tungsten nanofoams: Scaling behavior and structural disorder dependence of Young's modulus and flow strength
  In: Materials & Design 197 (2021), Art.Nr.: 109187
  ISSN: 0264-1275
  DOI: 10.1016/j.matdes.2020.109187
• Burtscher M., Zhao M., Kappacher J., Leitner A., Wurmshuber M., Pfeifenberger M., Maier-Kiener V., Kiener D.:
  High-temperature nanoindentation of an advanced nano-crystalline W/Cu composite
  In: Nanomaterials 11 (2021), Art.Nr.: 2951
  ISSN: 2079-4991
  DOI: 10.3390/nano11112951
• Kümmel F., Magnier A., Wu T., Niendorf T., Höppel HW.:
  Residual Stresses in Ultrafine-Grained Laminated Metal Composites Analyzed by X-ray Diffraction and the Hole-Drilling Method
  In: Advanced Engineering Materials (2022)
  ISSN: 1438-1656
  DOI: 10.1002/adem.202200274
• Diepold B., Schunk C., Kümmel F., Fey T., Prakash A., Höppel HW., Göken M.:
  Fatigue Life Optimized Layer Architecture of Ultrafine-Grained Al-Ti Laminates Under Bending Stresses
  In: Advanced Engineering Materials (2022)
  ISSN: 1438-1656
  DOI: 10.1002/adem.202101143
• Schmidt C., Höppel HW., Göken M.:
  Maßgeschneiderte partikelverstärkte Verbundwerkstoffe und Werkstoffverbunde hergestellt durch den akkumulativen Walzprozess (ARB)
  18. Symposium Verbundwerkstoffe
  In: Tagungsband zum 18. Symposium Verbundwerkstoffe 2011
• Taali S., Toroghinejad MR., Kuglstatter M., Höppel HW.:
  Grain boundary engineering in roll-bonded copper to overcome the strength-ductility dilemma
  In: Journal of Materials Research and Technology 17 (2022), S. 3198-3204
  ISSN: 2238-7854
  DOI: 10.1016/j.jmrt.2022.02.032
• Huang CX., Wang YF., Ma XL., Yin S., Höppel HW., Göken M., Wu XL., Gao HJ., Zhu YT.:
  Interface affected zone for optimal strength and ductility in heterogeneous laminate
  In: Materials Today 21 (2018), S. 713-719
  ISSN: 1369-7021
  DOI: 10.1016/j.mattod.2018.03.006
• Broedling NC., Hartmaier A., Gao H.:
  Fracture toughness of layered structures: Embrittlement due to confinement of plasticity
  In: Engineering Fracture Mechanics 75 (2008), S. 3743-3754
  ISSN: 0013-7944
  DOI: 10.1016/j.engfracmech.2007.10.014
• Medvedev AE., Lapovok R., Koch E., Höppel HW., Göken M.:
  Optimisation of interface formation by shear inclination: Example of aluminium-copper hybrid produced by ECAP with back-pressure
  In: Materials & Design 146 (2018), S. 142-151
  ISSN: 0264-1275
  DOI: 10.1016/j.matdes.2018.03.021