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Ti/Al Multi-Layered Sheets: Accumulative Roll Bonding (Part A)
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Metals 2016, 6(2), 31; doi:10.3390/met6020031

Ti/Al Multi-Layered Sheets: Differential Speed Rolling (Part B)

1
Leibniz Institute for Solid State and Materials Research Dresden (IFW Dresden), Helmholtzstr. 20, 01069 Dresden, Germany
2
Institut für Werkstoffwissenschaft, Technische Universität Dresden, 01062 Dresden, Germany
3
Institut für Werkstoffwissenschaft, Technische Universität Bergakademie Freiberg, Gustav-Zeuner-Str. 5, 09599 Freiberg, Germany
4
Osaka Municipal Technical Research Institute, 1-6-50 Morinomiya, Joto-ku, Osaka 5368553, Japan
5
Institut für Strukturphysik, Technische Universität Dresden, 01062 Dresden, Germany
6
Erich Schmid Institut für Materialwissenschaft, Österreichische Akademie der Wissenschaft, Jahnstraße 12, A-8700 Leoben, Austria
7
Department Materialphysik, Montanuniversität Leoben, Jahnstraße 12, A-8700 Leoben, Austria
*
Author to whom correspondence should be addressed.
Academic Editor: Hugo F. Lopez
Received: 26 November 2015 / Revised: 20 January 2016 / Accepted: 26 January 2016 / Published: 2 February 2016
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Abstract

Differential speed rolling has been applied to multi-layered Ti/Al composite sheets, obtained from accumulative roll bonding with intermediate heat treatments being applied. In comparison to conventional rolling, differential speed rolling is more efficient in strengthening the composite due to the more pronounced grain refinement. Severe plastic deformation by means of rolling becomes feasible if the evolution of common rolling textures in the Ti layers is retarded. In this condition, a maximum strength level of the composites is achieved, i.e., an ultimate tensile strength of 464 MPa, while the strain to failure amounts to 6.8%. The deformation has been observed for multi-layered composites. In combination with the analysis of the microstructure, this has been correlated to the mechanical properties. View Full-Text
Keywords: accumulative roll bonding; differential speed rolling; grain refinement; microstructure; mechanical properties; Ti/Al multi-layered composites accumulative roll bonding; differential speed rolling; grain refinement; microstructure; mechanical properties; Ti/Al multi-layered composites
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MDPI and ACS Style

Romberg, J.; Freudenberger, J.; Watanabe, H.; Scharnweber, J.; Eschke, A.; Kühn, U.; Klauß, H.; Oertel, C.-G.; Skrotzki, W.; Eckert, J.; Schultz, L. Ti/Al Multi-Layered Sheets: Differential Speed Rolling (Part B). Metals 2016, 6, 31.

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