Microstructure refinement and high-temperature tensile properties of Mg-12Gd-3Y-0.5Zr alloy after equal channel angular pressing

doi:10.1080/09500839.2021.1985733

IMR OpenIR

	Microstructure refinement and high-temperature tensile properties of Mg-12Gd-3Y-0.5Zr alloy after equal channel angular pressing
	Zhang, N.1; Yang, H. J.2; Shao, X. H.2
通讯作者	Shao, X. H.(xhshao@imr.ac.cn)
	2021-10-06
发表期刊	PHILOSOPHICAL MAGAZINE LETTERS
ISSN	0950-0839
页码	11
摘要	Grain refinement is significant for the mechanical properties of engineering alloys. We achieved a bi-ultrafine microstructure in an Mg-12Gd-3Y-0.5Zr alloy through equal channel angular pressing (ECAP) at 300 degrees C. The ECAP not only refined the matrix grains but also broke the large intermetallic particles into fine secondary particles and then rearranged them at the grain boundaries. These fine particles can suppress the growth of the recrystallised grains, as well as promote nucleation for recrystallisation. After four passes of ECAP, a uniform microstructure with both the matrix grain (similar to 500 nm) and the particle size (similar to 300 nm) in the ultrafine range was obtained. This unique microstructure resulted in a good combination of strength (>300MPa) and elongation to failure (>35%) at 200 degrees C, which sheds new light on refining microstructure to obtain good mechanical performance at elevated temperatures for Mg alloys.
关键词	Magnesium alloy equal channel angular pressing recrystallisation second-phase particles
资助者	Analytical and Testing Center of Northeastern University, Shenyang, China ; Liaoning Provincial Natural Science Foundation
DOI	10.1080/09500839.2021.1985733
收录类别	SCI
语种	英语
资助项目	Analytical and Testing Center of Northeastern University, Shenyang, China ; Liaoning Provincial Natural Science Foundation[2019-MS-335]
WOS研究方向	Materials Science ; Metallurgy & Metallurgical Engineering ; Physics
WOS类目	Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering ; Physics, Applied ; Physics, Condensed Matter
WOS记录号	WOS:000705402100001
出版者	TAYLOR & FRANCIS LTD
引用统计	被引频次：3[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/166552
专题	中国科学院金属研究所
通讯作者	Shao, X. H.
作者单位	1.Northeastern Univ, Analyt & Testing Ctr Northeastern Univ, Shenyang, Peoples R China 2.Chinese Acad Sci, Inst Met Res, 72 Wenhua Rd, Shenyang 110016, Peoples R China
推荐引用方式 GB/T 7714	Zhang, N.,Yang, H. J.,Shao, X. H.. Microstructure refinement and high-temperature tensile properties of Mg-12Gd-3Y-0.5Zr alloy after equal channel angular pressing[J]. PHILOSOPHICAL MAGAZINE LETTERS,2021:11.
APA	Zhang, N.,Yang, H. J.,&Shao, X. H..(2021).Microstructure refinement and high-temperature tensile properties of Mg-12Gd-3Y-0.5Zr alloy after equal channel angular pressing.PHILOSOPHICAL MAGAZINE LETTERS,11.
MLA	Zhang, N.,et al."Microstructure refinement and high-temperature tensile properties of Mg-12Gd-3Y-0.5Zr alloy after equal channel angular pressing".PHILOSOPHICAL MAGAZINE LETTERS (2021):11.