Effect of temperature on deformation mechanisms of the Mg88Co5Y7 alloy during hot compression

doi:10.1016/j.matchar.2019.03.049

IMR OpenIR

	Effect of temperature on deformation mechanisms of the Mg88Co5Y7 alloy during hot compression
	Peng, Z. Z.1; Jin, Q. Q.1; Shao, X. H.1; Zhou, Y. T.1; Zheng, S. J.1; Zhang, B.1; Ma, X. L.1,2
通讯作者	Shao, X. H.(xhshao@imr.ac.cn) ; Ma, X. L.(xlma@imr.ac.cn)
	2019-05-01
发表期刊	MATERIALS CHARACTERIZATION
ISSN	1044-5803
卷号	151 页码:553-562
摘要	The deformation mechanisms and microstructure evolution of Mg88Co5Y7 (at.%) alloy with long period stacking ordered (LPSO) phase during compression at 373-673 K have been studied using transmission electron microscopy. The alloy consists of alpha-Mg matrix, interdendritic LPSO phase, and other Mg-Co-Y intermetallic compounds. Increasing temperature leads to a general decrease in strength of the Mg88Co5Y7 alloy. A large number of {10 (1) over bar2} tension twins and deformation bands are activated in the matrix, whereas basal slip and deformation kink dominate in the LPSO structures during compression at 373 and 473 K. Non-basal slip in matrix and almost no dynamic recrystallization are responsible for high strength and the good ductility of sample deformed at 573 K. Recrystallization of Mg matrix occurs upon deformation at 673 K, dramatically lowering the corresponding strength. Further, the grain boundary pinning effect from LPSO phase, MgYCo4 phase, and broken Mg-3(Co, Y) segments is supposed to account for the relatively high strength of Mg88Co5Y7 alloy at high temperatures.
关键词	Magnesium alloy LPSO structure Deformation twin Recrystallization Intermetallics
资助者	National Natural Science Foundation of China ; Innovation Fund of IMR ; SYNL
DOI	10.1016/j.matchar.2019.03.049
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation of China[51871222] ; National Natural Science Foundation of China[51801214] ; National Natural Science Foundation of China[51301177] ; Innovation Fund of IMR[2015-PY08] ; SYNL[2015FP18] ; SYNL[2017FP16]
WOS研究方向	Materials Science ; Metallurgy & Metallurgical Engineering
WOS类目	Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering ; Materials Science, Characterization & Testing
WOS记录号	WOS:000467668600059
出版者	ELSEVIER SCIENCE INC
引用统计	被引频次：9[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/321006/133615
专题	中国科学院金属研究所
通讯作者	Shao, X. H.; Ma, X. L.
作者单位	1.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, 72 Wenhua Rd, Shenyang 110016, Liaoning, Peoples R China 2.Lanzhou Univ Technol, Sch Mat Sci & Engn, 287 Langongping Rd, Lanzhou 730050, Gansu, Peoples R China
推荐引用方式 GB/T 7714	Peng, Z. Z.,Jin, Q. Q.,Shao, X. H.,et al. Effect of temperature on deformation mechanisms of the Mg88Co5Y7 alloy during hot compression[J]. MATERIALS CHARACTERIZATION,2019,151:553-562.
APA	Peng, Z. Z..,Jin, Q. Q..,Shao, X. H..,Zhou, Y. T..,Zheng, S. J..,...&Ma, X. L..(2019).Effect of temperature on deformation mechanisms of the Mg88Co5Y7 alloy during hot compression.MATERIALS CHARACTERIZATION,151,553-562.
MLA	Peng, Z. Z.,et al."Effect of temperature on deformation mechanisms of the Mg88Co5Y7 alloy during hot compression".MATERIALS CHARACTERIZATION 151(2019):553-562.