Inhibiting effect of I-phase formation on the plastic instability of the duplex structured Mg-8Li-6Zn-1.2Y (in wt.%) alloy

doi:10.1016/j.jma.2021.08.030

IMR OpenIR

	Inhibiting effect of I-phase formation on the plastic instability of the duplex structured Mg-8Li-6Zn-1.2Y (in wt.%) alloy
	Wang, B. J.1,3; Xu, D. K.2; Zhuang, X. Q.2; Sheng, L. Y.3
通讯作者	Wang, B. J.(bjwang@alum.imr.ac.cn) ; Xu, D. K.(dkxu@imr.ac.cn)
	2023-06-01
发表期刊	JOURNAL OF MAGNESIUM AND ALLOYS
ISSN	2213-9567
卷号	11 期号:6 页码:2196-2204
摘要	In this work, the tensile behaviors of Mg-8%Li and Mg-8%Li-6%Zn-1.2%Y alloys at ambient temperature were investigated and compared. It revealed that the plastic instability of Mg-8%Li alloy was quite remarkable and the variation range of serrated flowing stress can reach 5 MPa. For the Mg-8%Li-6%Zn-1.2%Y alloy, the formation of I-phase (Mg3Zn6Y) can simultaneously enhance the tensile strength and eliminate the plastic instability phenomenon, whilst its ductility was degraded. The in-situ tensile tests revealed that for the Mg-8%Li alloy, the severity and number of slip traces present in both & alpha;-Mg and /3-Li matrix phases increased remarkably with the applied tensile strain. However, slip traces were quite fine in /3-Li matrix phase and could be clearly observed when the applied tensile strain exceeded 18%. Due to the incompatibility of plastic deformation occurred in two matrix phases, the induced strain concentration at & alpha;-Mg//3-Li interfaces caused their subsequent cracking. For the Mg-8%-6%Zn-1.2%Y alloy, the I-phase distributed at & alpha;-Mg//3-Li interfaces suppressed the plastic deformation of & alpha;-Mg matrix phase and the tensile strain was dominated by the /3-Li matrix phase, resulting in the disappearance of plastic instability. Moreover, the plastic strain would preferentially concentrate at I-phase//3-Li interfaces and subsequently induced the cracking of I-phase.& COPY; 2022 Chongqing University. Publishing services provided by Elsevier B.V. on behalf of KeAi Communications Co. Ltd.This is an open access article under the CC BY-NC-ND license ( http://creativecommons.org/licenses/by-nc-nd/4.0/ )Peer review under responsibility of Chongqing University
关键词	Mg-li alloys Microstructure Plastic deformation Basal slip Cracking
资助者	National Natural Science Foundation of China ; National Key Research and Development Program of China ; High level Achievement and Construction Project of Shenyang Ligong University ; Liaoning Province's project of Revitalizing Liaoning Talents ; Doctor Startup Fund of Natural Science Foundation Program of Liaoning Province ; Strategic New Industry Development Special Foundation of Shenzhen ; International Joint Laboratory for Light Alloys, Liaoning BaiQianWan Talents Program ; Domain Foundation of Equipment Advance Research of 13th Five-year Plan ; Innovation Fund of Institute of Metal Research (IMR) ; Chinese Academy of Sciences (CAS) ; National Basic Research Program of China
DOI	10.1016/j.jma.2021.08.030
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation of China ; National Key Research and Development Program of China[U21A2049] ; National Key Research and Development Program of China[51871211] ; National Key Research and Development Program of China[52071220] ; National Key Research and Development Program of China[5207011217] ; National Key Research and Development Program of China[51701129] ; High level Achievement and Construction Project of Shenyang Ligong University[2017YFB0702001] ; High level Achievement and Construction Project of Shenyang Ligong University[2016YFB0301105] ; Liaoning Province's project of Revitalizing Liaoning Talents[SYLUXM202105] ; Doctor Startup Fund of Natural Science Foundation Program of Liaoning Province[XLYC1907062] ; Strategic New Industry Development Special Foundation of Shenzhen[2019 -BS -200] ; International Joint Laboratory for Light Alloys, Liaoning BaiQianWan Talents Program[JCYJ20170306141749970] ; Domain Foundation of Equipment Advance Research of 13th Five-year Plan ; Innovation Fund of Institute of Metal Research (IMR)[61409220118] ; Chinese Academy of Sciences (CAS) ; National Basic Research Program of China ; [2013CB632205]
WOS研究方向	Metallurgy & Metallurgical Engineering
WOS类目	Metallurgy & Metallurgical Engineering
WOS记录号	WOS:001053094900001
出版者	KEAI PUBLISHING LTD
引用统计	被引频次：2[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/321006/179090
专题	中国科学院金属研究所
通讯作者	Wang, B. J.; Xu, D. K.
作者单位	1.Shenyang Ligong Univ, Sch Environm & Chem Engn, Shenyang 110159, Peoples R China 2.Chinese Acad Sci, Key Lab Nucl Mat & Safety Assessment, Inst Met Res, Shenyang 110016, Peoples R China 3.Peking Univ, Shenzhen Inst, Shenzhen Key Lab Human Tissue Regenerate & Repair, Shenzhen 518057, Peoples R China
推荐引用方式 GB/T 7714	Wang, B. J.,Xu, D. K.,Zhuang, X. Q.,et al. Inhibiting effect of I-phase formation on the plastic instability of the duplex structured Mg-8Li-6Zn-1.2Y (in wt.%) alloy[J]. JOURNAL OF MAGNESIUM AND ALLOYS,2023,11(6):2196-2204.
APA	Wang, B. J.,Xu, D. K.,Zhuang, X. Q.,&Sheng, L. Y..(2023).Inhibiting effect of I-phase formation on the plastic instability of the duplex structured Mg-8Li-6Zn-1.2Y (in wt.%) alloy.JOURNAL OF MAGNESIUM AND ALLOYS,11(6),2196-2204.
MLA	Wang, B. J.,et al."Inhibiting effect of I-phase formation on the plastic instability of the duplex structured Mg-8Li-6Zn-1.2Y (in wt.%) alloy".JOURNAL OF MAGNESIUM AND ALLOYS 11.6(2023):2196-2204.