Transactions of Nonferrous Metals Society of China The Chinese Journal of Nonferrous Metals

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Transactions of Nonferrous Metals Society of China

Vol. 20    No. 2    February 2010

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Reheating and thixoforging of ZK60+RE alloy deformed by ECAE
ZHAO Zu-de(赵祖德)1, CHENG Yuan-sheng(程远胜)2, CHEN Qiang(陈 强)1,
WANG Yan-bin(王艳彬)1, SHU Da-yu(舒大禹)1

1. Southwest Technique and Engineering Institute, Chongqing 400039, China;
2. School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001, China

Abstract:The two-pass equal channel angular extrusion (ECAE) process was introduced into strain-induced melt activation (SIMA) to predeform a ZK60 alloy with rare earth (RE) addition. Microstructure evolution of ECAE-formed ZK60+RE alloy during reheating was investigated. Furthermore, tensile properties of thixoforged components were determined. The results show that the SIMA process can produce ideal microstructures, and spheroidized solid particles with little entrapped liquid can be obtained. With prolonging holding time, the size of solid particles increases and the degree of spheroidization is improved. The tensile properties of the thixoforged ZK60+RE samples are close to those of two-pass ECAE-formed samples.


Key words: magnesium alloy; reheating; thixoforging; equal channel angular extrusion (ECAE)

ISSN 1004-0609
CN 43-1238/TG

ISSN 1003-6326
CN 43-1239/TG

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