The Effect of Sr Addition on Hot Tearing Susceptibility of Mg-1Ca-xSr Alloys

被引：0
作者：
Hua Zhao
Jiangfeng Song
Bin Jiang
Hong Yang
Biquan Xiao
Qiang Liu
Zhiyuan Yang
Xuejiao Jia
Jinge Liao
Liangyin Wu
Fusheng Pan
机构：
[1] National Engineering Research Center for Magnesium Alloy,State Key Laboratory of Mechanical Transmissions, College of Materials Science and Engineering
[2] Chongqing University,undefined
[3] Chongqing University,undefined
来源：
Journal of Materials Engineering and Performance | 2021年 / 30卷
关键词：
eutectic liquid fraction; hot tearing; magnesium; Sr; susceptible temperature range;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
The hot tearing susceptibility of Mg-1Ca-xSr (x=0, 0.2, 0.4, 0.6, wt.%) alloys was investigated by CRC mold with a contraction force measurement system with a load cell and a temperature monitor. The results showed that the hot tearing susceptibility of Mg-1Ca-xSr alloys significantly improved with increasing of Sr content. Especially in Mg-1Ca-0.6Sr alloy, no visible tear was found on the casting sample. The force dropped and the final force value from the time-force-temperature curve derived from the hot tearing instruments could reflect the hot tearing susceptibility of different alloys. The mechanism of improved hot tearing resistance of Mg-1Ca-xSr alloys was clarified. In addition to susceptible temperature range and eutectic liquid fraction, it is found that the formation tendency of divorced eutectic also plays an important role on the hot tearing behavior of Mg-1Ca-xSr alloys.
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页码：7645 / 7654
页数：9
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