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

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中国有色金属学报(英文版)

Transactions of Nonferrous Metals Society of China

Vol. 22    No. 2    December 2012

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Microstructural evolution and mechanical properties of ZK60 magnesium alloy prepared by multi-axial forging during partial remelting
TAO Jian-quan1, CHENG Yuan-sheng2, HUANG Shao-dong1, PENG Fei-fei1, YANG Wen-xuan1,
LU Mei-qi1, ZHANG Zhi-ming1, J

1. No.59 Institute of China Ordnance Industry, Chongqing 400039, China;
2. School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001, China

Abstract:In order to improve the mechanical properties of ZK60 magnesium alloy components, the multi-axial forging (MAF) plus partial remelting route was used in this study. The effect of remelting temperature and holding time on microstructure of semi-solid ZK60 magnesium alloy was also studied. Furthermore, the tensile mechanical properties of ZK60 , magnesium alloy components produced by multi-axial forging plus partial remelting route were compared at different thixoforging temperatures. The results showed that the multi-axial forging followed by partial remelting is an effective route to produce semi-solid ZK60 magnesium alloy for thixoforming. During the partial remelting, with prolonging the holding time and increasing the remelting temperatures, the solid grain size increased. With the increase of remelting temperature, the degree of spheroidization tended to be improved. With increasing the thixoforming temperature from 560 °C to 574 °C, the tensile mechanical properties of ZK60 magnesium alloy were improved.

 

Key words: ZK60 Mg alloy; semi-solid processing; multi-axial forging; mechanical properties; microstructure

ISSN 1004-0609
CN 43-1238/TG
CODEN: ZYJXFK

ISSN 1003-6326
CN 43-1239/TG
CODEN: TNMCEW

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