|About this Abstract
||2018 TMS Annual Meeting & Exhibition
||Magnesium Technology 2018
||Superplasticity in a Chip-consolidated Mg97Zn1Y2 Alloy with LPSO Phase
||Kazuha Suzawa, Shin-ichi Inoue, Yoshihito Kawamura, Michimasa Miyanaga, Katsuhito Yoshida, Nozomu Kawabe, Michiaki Yamasaki
|On-Site Speaker (Planned)
The superplastic behavior of Mg<SUB>97</SUB>Zn<SUB>1</SUB>Y<SUB>2</SUB> alloy with LPSO phase processed by chip-consolidation has been investigated. The chip-consolidated Mg<SUB>97</SUB>Zn<SUB>1</SUB>Y<SUB>2</SUB> alloy exhibited superplasticity at a wide initial strain-rate range from 1×10<SUP>-3</SUP> s<SUP>-1</SUP> to 1×10<SUP>-1</SUP> s<SUP>-1</SUP> and at relatively low temperature of 623K. The maximum elongation was approximately 400% at high strain-rate of 1×10<SUP>-2</SUP> s<SUP>-1</SUP>. SEM/EBSD measurement revealed that the chip-consolidated Mg<SUB>97</SUB>Zn<SUB>1</SUB>Y<SUB>2</SUB> alloy consisted of equiaxed fine-grains with a mean size of ~1µm. There were little changes in grain sizes and shapes before and after deformation. This result suggests that the grain boundary sliding in the equiaxed fine-grains is the dominant superplastic deformation mechanism of this alloy.