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Type Böhner, Andreas; Maier, Verena; Durst, Karsten; Höppel, Heinz Werner; Göken, Mathias
  Publication Macro- and Nanomechanical Properties and Strain Rate Sensitivity of Accumulative Roll Bonded and Equal Channel Angular Pressed Ultrafine-Grained Materials Volume Journal Article
Pages 2011
  Abstract Advanced Engineering Materials  
  Corporate Author Adv. Eng. Mater.  
Publisher 13  
Editor 4
  Summary Language 251-255 Series Editor  
Abbreviated Series Title Abstract Several processes of severe plastic deformation are suitable for the production of materials with ultrafine-grained microstructures which are known to exhibit high strength and often good ductility as well as strain rate sensitive behavior. The most promising ones are equal channel angular pressing (ECAP) for bulk material and accumulative roll bonding (ARB) for the production of sheet material. In order to evaluate the influence of the process on these mechanical properties and the strain rate sensitivity, tensile tests, and nanoindentation tests were performed on material produced up to similar effective plastic strains of εARB = 6.4 and εECAP = 6.3. It could be shown that the macroscopic strength is slightly higher for ARB than for ECAP material and vice versa in nanoindentation. Independent of the testing method, the strain rate sensitivities and activation volumes are similar for both materials. Thus, both processes performed up to similar effective plastic strains lead to comparable improvements in the mechanical properties. Additionally it could be shown, that this comparison allows the identification of the dominant deformation mechanism which is responsible for the observed strain rate sensitivity.
  Series Issue ISSN  
  Expedition WILEY-VCH Verlag Notes  
Call Number  
Contribution Id  
Serial URL ISBN  
1527-2648 no NU @ karnesky @ 11068
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