Low temperature deformation detwinning - a reverse mode of twinning.
- X-Ray Science Division
The origin of the plasticity in bulk nanocrystalline metals have, to date, been attributed to the grain-boundary-mediated process, stress-induced grain coalescence, dislocation plasticity, and/or twinning. Here we report a different mechanism - detwinning, which operates at low temperatures during the tensile deformation of an electrodeposited Cu with a high density of nanosized growth twins. Both three-dimensional XRD microscopy using the Laue method with a submicron-sized polychromatic beam and high-energy XRD technique with a monochromatic beam provide the direct experimental evidences for low temperature detwinning of nanoscale twins.
- Research Organization:
- Argonne National Laboratory (ANL)
- Sponsoring Organization:
- SC; NSF; National Natural Science Foundation of China
- DOE Contract Number:
- AC02-06CH11357
- OSTI ID:
- 1019263
- Report Number(s):
- ANL/XSD/JA-70543
- Journal Information:
- Adv. Eng. Mater., Journal Name: Adv. Eng. Mater. Journal Issue: 9 ; 2010 Vol. 12; ISSN 1438-1656; ISSN AENMFY
- Country of Publication:
- United States
- Language:
- ENGLISH
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