In-situ synchrotron X-ray microdiffraction study of lattice rotation in polycrystalline materials during uniaxial deformations
Recent experiments have shown that formation of dislocation cell structures and rotation of structural elements at the macroscopic level are fundamental to the development of plastic deformation. However, attention should also be focused on micro-volumes because local stress and strain can significantly differ from their averaged values at the macroscale. In-situ orientation measurements in copper polycrystals during uniaxial deformation were performed using synchrotron x-ray microdiffraction at the Advanced Light Source. We observed heterogeneities in deformation-induced microstructure within individual grains. Different slip systems in particular can be simultaneously activated among neighboring volume elements of individual grains.
- Research Organization:
- Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
- Sponsoring Organization:
- USDOE Director. Office of Science. Office of Basic Energy Sciences. Materials Science and Engineering Division; Research Institute of Industrial Science and Technology, National Program for Tera-Level Nanodevices. Ministry of Science and Technology (US)
- DOE Contract Number:
- AC03-76SF00098
- OSTI ID:
- 837414
- Report Number(s):
- LBNL-55904; R&D Project: A580ES; TRN: US0500993
- Resource Relation:
- Conference: 8th International Conference on Synchrotron Radiation and Instrumentation (SRI), San Francisco, CA (US), 08/25/2004--08/29/2004; Other Information: PBD: 19 Jul 2004
- Country of Publication:
- United States
- Language:
- English
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