Microstructure evolution and strain localization during shear deformation of an aluminum alloy
- LPMTM, Villetaneuse (France). Institut Galilee
- Warsaw Univ. of Technology, Warszawa (Poland)
Strain localization by shear banding during shear tests of a commercial aluminium alloy is described at different scales using optical microscopy, SEM and TEM. The evolution of the dislocation microstructure is correlated to the global mechanical behavior. Two initial states of the material--heavily cold-rolled and recovered after cold-rolling--having the same crystallographical texture are compared. The localization occurs only for the as-rolled samples, and its consequences on damage and fracture depends on the angle between the initial rolling direction and the shearing direction. The discussion focuses on the predominant role of the microstructure, rather than the crystallographic texture, in the localization phenomena. Macroscopic arguments for localization are also evoked.
- OSTI ID:
- 415411
- Journal Information:
- Acta Materialia, Vol. 44, Issue 10; Other Information: PBD: Oct 1996
- Country of Publication:
- United States
- Language:
- English
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