Subgrain formation and evolution during the deformation of an Al-Mg-Sc alloy at elevated temperatures
- Lawrence Livermore National Lab., CA (United States)
- Russian Academy of Sciences, Ufa (Russian Federation). Inst. of Metals Superplasticity Problems
The high-temperature properties of the binary Al-Mg and the ternary Al-Mg-Sc alloys have been studied by Sawtell and Jensen. The tensile elongation value for the Al-4Mg-0.5Sc alloy was quite remarkable ({approximately}1,000%). The high elongation was apparently attributed to a fine distribution of Al{sub 3}Sc particles in the alloy. However, the exact role of Al{sub 3}Sc on the microstructural evolution in the Al-Mg alloy was not clear. Also, the strain rate sensitivity value was found to vary with strain rate and temperature, suggesting there might exist a change in deformation mechanisms. Several years ago, research in Russia also led to the development of an Al-6Mg-0.3Sc alloy (designated Al 1570). The purpose of this paper is to demonstrate the effectiveness of Al{sub 3}Sc in stabilizing the substructure/structure in aluminum and to relate the microstructural evolution to the formability of this alloy.
- DOE Contract Number:
- W-7405-ENG-48
- OSTI ID:
- 474216
- Journal Information:
- Scripta Materialia, Vol. 36, Issue 9; Other Information: PBD: 1 May 1997
- Country of Publication:
- United States
- Language:
- English
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