Superplasticity and microstructural stability in a Mg alloy processed by hot rolling and friction stir processing

作者：Jain V; Mishra R S^*; Verma R; Essadiqi E

来源：Scripta Materialia, 2013, 68(7): 447-450.

DOI：10.1016/j.scriptamat.2012.11.009

• Superplasticity
• Severe plastic deformation
• Friction stir processing
• Strain rate sensitivity
• Grain boundary sliding

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.

• 出版日期2013-4