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.
Prof. Dr.-Ing. Heinz Werner Höppel
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
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
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Ultrafine-grained austenitic stainless steels X4CrNi18-12 and X8CrMnNi19-6-3 produced by accumulative roll bonding
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Effect of grain refinement by ECAP on creep of pure Cu
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Influence of cross-rolling on the mechanical properties of an accumulative roll bonded aluminum alloy AA6014
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The Strengthening Effect of Phase Boundaries in a Severely Plastically Deformed Ti-Al Composite Wire
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Activation parameters for deformation of ultrafine-grained aluminium as determined by indentation strain rate jumps at elevated temperature
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Asymmetric accumulative roll bonding of aluminium-titanium composite sheets
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Comparison of the monotonic and cyclic mechanical properties of ultrafine-grained low carbon steels processed by continuous and conventional equal channel angular pressing
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Fatigue Life, Cyclic Deformation Behaviour and Damage Mechanisms of Ultrafine-Grained AA5754 Aluminum Alloy Produced by Accumulative Roll Bonding
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In: Crystal Research and Technology 48 (2013), S. 532-537
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Effect of Mg content on microstructure, texture and strength of severely equal channel angular pressed aluminium-magnesium alloys
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In: Acta Materialia 60 (2012), S. 4661-4671
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In: Key Engineering Materials 504-506 (2012), S. 575-580
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DOI: 10.4028/www.scientific.net/KEM.504-506.575
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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
Influence of the ECAP processing parameters on the cyclic deformation behavior on ultrafine-grained cubic face centered metals
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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
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DOI: 10.1002/9781118516430.ch10
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Mechanical anisotropy of aluminium laminates produced by ARB
In: Materials Science Forum 702-703 (2012), S. 151-156
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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
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Accelerated grain refinement during accumulative roll bonding by nanoparticle reinforcement
In: Scripta Materialia 64 (2011), S. 245--248
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Bimodal grain size distributions in UFG materials produced by SPD - Their evolution and effect on the fatigue and monotonic strength properties
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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
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DOI: 10.4028/www.scientific.net/MSF.667-669.725
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In: Materials Science Forum 667-669 (2011), S. 217-222
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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
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Particle based alloying by accumulative roll bonding in the system Al-Cu
In: Metals 1 (2011), S. 65-78
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DOI: 10.3390/met1010065
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
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In: Advanced Materials 23 (2011), S. 2663-2668
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, :- Schneibel J.H., Heilmaier M., Blum W., Hasemann G., Shanmugasundaram T.:
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In: Acta Materialia 59 (2011), S. 1300-1308
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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)
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7th International Conference of the Balkan Physical Union (Alexandroupolis)
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In situ TEM observations of reverse dislocation motion upon unloading of tensile-deformed UFG aluminium
In: Journal of Physics : Conference Series 240 (2010)
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Localized corrosion of ultrafine-grained Al-Mg model alloys
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Nanomechanical behaviour of Al-Ti layered composites produced by accumulative roll bonding
In: Journal of Physics: Conference Series 240 (2010), Art.Nr.: 012108
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Plastic anisotropy of ultrafine grained Al alloy AA6016 produced by accumulative roll bonding
In: Solid State Phenomena 160 (2010), S. 171-176
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Preface to the special issue on ultrafine grained materials
In: Journal of Materials Science 45 (2010), S. 4543-4544
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DOI: 10.1016/j.actamat.2008.12.041
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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
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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
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John Wiley and Sons, 2009
ISBN: 9783527315246
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Friction stir welding of accumulative roll-bonded commercial-purity aluminium AA1050 and aluminium alloy AA6016
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DOI: 10.1016/j.msea.2007.12.057
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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
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Enhanced superplastic deformation behavior of ultrafine-grained Ti-6Al-4V alloy
In: Materialwissenschaft und Werkstofftechnik 39 (2008), S. 367-370
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Hardening and thermal stability of nanocrystalline AlMg4.8 powder
In: Philosophical Magazine 88 (2008), S. 1209-1226
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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
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On the elevated-temperature deformation behavior of polycrystalline Cu subjected to predeformation by multiple compression
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Structural stability of ultrafine-grained copper
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DOI: 10.1016/j.scriptamat.2007.08.033
Texture and mechanical anisotropy of ultrafine-grained aluminum alloy AA6016 produced by accumulative roll bonding
In: Texture, Stress, and Microstructure 2008 (2008)
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DOI: 10.1155/2008/328754
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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
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XRD profile analysis characterization of ultrafine grained Al-Mg alloys
In: Journal of Materials Science 43 (2008), S. 7481-7487
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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
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
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