Journal
SCRIPTA MATERIALIA
Volume 68, Issue 7, Pages 447-450Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.scriptamat.2012.11.009
Keywords
Superplasticity; Severe plastic deformation; Friction stir processing; Strain rate sensitivity; Grain boundary sliding
Categories
Funding
- J. William Fulbright Foreign Scholarship Board
- US Department of State Bureau of Educational and Cultural Affairs
- Government of India, Council of Scientific and Industrial Research
- Institute of International Education
- United States-India Educational Foundation [1369/DPR/2010-2011]
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The superplastic behavior of a Mg-1.2 Zn-1.7 Y-0.53 Al-0.27 Mn alloy sheet processed by hot rolling and friction stir processing (FSP) was investigated. The kinetics of superplastic deformation were compared with Mg-3 Al-1 Zn and other Mg-Zn-Y alloys processed by different methods. The FSP Mg-1.2 Zn-1.7 Y-0.53 Al-0.27 Mn alloy exhibits slower kinetics of deformation compared with other alloys. The microstructural stability of the FSP Mg-1.2 Zn-1.7 Y-0.53 Al-0.27 Mn alloy is better than the Mg-3 Al-1 Zn alloy because of the presence of different types of precipitates. (C) 2012 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
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