Effect of Solution Treatment on the Microstructure and Mechanical Properties of Sand-Cast Mg-9Gd-4Y-0.5Zr Alloy

IMR OpenIR

	Effect of Solution Treatment on the Microstructure and Mechanical Properties of Sand-Cast Mg-9Gd-4Y-0.5Zr Alloy
	Li, JL; Zhang, N; Wang, XX; Wu, D; Chen, RS; Chen, RS (reprint author), Chinese Acad Sci, Inst Met Res, Grp Magnesium Alloys & Their Applicat, Shenyang 110016, Liaoning, Peoples R China.
	2018-02-01
发表期刊	ACTA METALLURGICA SINICA-ENGLISH LETTERS
ISSN	1006-7191
卷号	31 期号:2 页码:189-198
摘要	Sand-cast Mg-9Gd-4Y-0.5Zr (wt%) alloy was solution- treated at 500-565 degrees C in the time range of 0.5-30 h in air or vacuum to investigate its microstructure evolution and mechanical properties. The results showed that solution treatment temperature had a significant influence on the dissolving rate of eutectic phase and grain growth. Taken both of them into consideration, 510-520 degrees C was considered to be the optimum solution treatment temperature range for this alloy. It should be noted that the trace (0.4-0.9 vol%) and insoluble cuboid-shaped phase precipitated during solution treatment was identified to be YH2, of which the hydrogen was thought to come from both the melting and solution heating process. In addition, the 3D morphology and dissolving process of Mg-24(Gd, Y)(5) eutectic phases in the as-cast alloy were also discussed via in-situ observation under X-ray tomography.; Sand-cast Mg-9Gd-4Y-0.5Zr (wt%) alloy was solution- treated at 500-565 degrees C in the time range of 0.5-30 h in air or vacuum to investigate its microstructure evolution and mechanical properties. The results showed that solution treatment temperature had a significant influence on the dissolving rate of eutectic phase and grain growth. Taken both of them into consideration, 510-520 degrees C was considered to be the optimum solution treatment temperature range for this alloy. It should be noted that the trace (0.4-0.9 vol%) and insoluble cuboid-shaped phase precipitated during solution treatment was identified to be YH2, of which the hydrogen was thought to come from both the melting and solution heating process. In addition, the 3D morphology and dissolving process of Mg-24(Gd, Y)(5) eutectic phases in the as-cast alloy were also discussed via in-situ observation under X-ray tomography.
部门归属	[li, jing-li ; wu, di ; chen, rong-shi] chinese acad sci, inst met res, grp magnesium alloys & their applicat, shenyang 110016, liaoning, peoples r china ; [li, jing-li] univ sci & technol china, sch mat sci & engn, hefei 230026, anhui, peoples r china ; [zhang, na ; wang, xiao-xuan] avic shenyang liming aeroengine grp corp, shenyang 110043, liaoning, peoples r china
关键词	Zr Alloys Mg Gd Temperature
学科领域	Metallurgy & Metallurgical Engineering
资助者	National Natural Science Foundation of China [51301173, 51531002]; National Basic Research Program of China (973 Program) [2013CB632202]; National Key Research and Development Program of China [2016YFB0301104]
收录类别	SCI
语种	英语
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/79529
专题	中国科学院金属研究所
通讯作者	Wu, D; Chen, RS (reprint author), Chinese Acad Sci, Inst Met Res, Grp Magnesium Alloys & Their Applicat, Shenyang 110016, Liaoning, Peoples R China.
推荐引用方式 GB/T 7714	Li, JL,Zhang, N,Wang, XX,et al. Effect of Solution Treatment on the Microstructure and Mechanical Properties of Sand-Cast Mg-9Gd-4Y-0.5Zr Alloy[J]. ACTA METALLURGICA SINICA-ENGLISH LETTERS,2018,31(2):189-198.
APA	Li, JL,Zhang, N,Wang, XX,Wu, D,Chen, RS,&Chen, RS .(2018).Effect of Solution Treatment on the Microstructure and Mechanical Properties of Sand-Cast Mg-9Gd-4Y-0.5Zr Alloy.ACTA METALLURGICA SINICA-ENGLISH LETTERS,31(2),189-198.
MLA	Li, JL,et al."Effect of Solution Treatment on the Microstructure and Mechanical Properties of Sand-Cast Mg-9Gd-4Y-0.5Zr Alloy".ACTA METALLURGICA SINICA-ENGLISH LETTERS 31.2(2018):189-198.