INVESTIGATING MICROSTRUCTURES AND HIGH TEMPERATURE SUPERPLASTICITY BEHAVIOR OF MG-5(MASS%) SN ALLOY BY USING EQUAL CHANNEL ANGULAR EXTRUSION

Authors

Hao-Jan Tsai, Department of Materials Science and Engineering, National Chiao Tung University, Hsinchu, Taiwan, R.O.C.
Chin-Guo Kuo, Department of Industrial Education, National Taiwan Normal University, Taipei, Taiwan, R.O.C.
Chuen-Guang Chao, Department of Materials Science and Engineering, National Chiao Tung University, Hsinchu, Taiwan, R.O.CFollow
Tzeng-Feng Liu, Department of Materials Science and Engineering, National Chiao Tung University, Hsinchu, Taiwan, R.O.C

Abstract

In this study, we investigated the microstructures and high temperature plasticity behaviour of an Mg-5(mass%) Sn alloy after equal channel angular extrusion (ECAE). These results show that the grain boundary of the as-cast Mg-5(mass%) Sn alloy contained continuous eutectic ɑ-Mg+Mg2Sn precipitates. After an ECAE process, the average grain size decreased from 147 μm to about 10 μm and the continuous eutectic ɑ-Mg+ Mg2Sn particles were broken down, and those particles distributed uniformly. The maximum elongation was 550 % at high temperature 350C with strain rate of 1x10-3 s-1.

Recommended Citation

Tsai, Hao-Jan; Kuo, Chin-Guo; Chao, Chuen-Guang; and Liu, Tzeng-Feng (2016) "INVESTIGATING MICROSTRUCTURES AND HIGH TEMPERATURE SUPERPLASTICITY BEHAVIOR OF MG-5(MASS%) SN ALLOY BY USING EQUAL CHANNEL ANGULAR EXTRUSION," Journal of Marine Science and Technology: Vol. 24: Iss. 3, Article 1.
DOI: 10.6119/JMST-013-1224-1
Available at: https://jmstt.ntou.edu.tw/journal/vol24/iss3/1