Effect of Icosahedral Phase on Crystallographic Texture and Mechanical Anisotropy of Mg-4%Li Based Alloys

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	Effect of Icosahedral Phase on Crystallographic Texture and Mechanical Anisotropy of Mg-4%Li Based Alloys
	Li, C. Q. ; Xu, D. K. ; Yu, S. ; Sheng, L. Y. ; Han, E. H.
刊名	JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
	2017-05-01
卷号	33 期号:5 页码:475-480
关键词	Mg-Li alloy Texture Mechanical anisotropy Fracture
ISSN号	1005-0302
通讯作者	Xu, DK (reprint author), Chinese Acad Sci, Inst Met Res, CAS Key Lab Nucl Mat & Safety Assessment, Shenyang 110016, Peoples R China.
中文摘要	Through investigating and comparing the microstructure and mechanical properties of the as-extruded Mg alloys Mg-4%Li and Mg-4%Li-6%Zn-1.2%Y (in wt%), it demonstrates that although the formation of I-phase (Mg3Zn6Y, icosahedral structure) could weaken the crystallographic texture and improve the mechanical strength, the mechanical anisotropy in terms of strength remains in Mg-4%Li-6%Zn-1.2%Y alloy. Failure analysis indicates that for the Mg-4%Li alloy, the fracture surfaces of the tensile samples tested along transverse direction (TD) contain a large number of plastic dimples, whereas the fracture surface exhibits quasi-cleavage characteristic when tensile samples were tested along extrusion direction (ED). For the Mg-4%Li-6%Zn-1.2%Y alloy, typical ductile fracture surfaces can be observed in both "TD" and "ED" samples. Moreover, due to the zonal distribution of broken I-phase particles, the fracture surface of "TD" samples is characterized by the typical "woody fracture". Copyright (C) 2017, The editorial office of Journal of Materials Science & Technology. Published by Elsevier Limited.
学科主题	Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
收录类别	SCI
资助信息	National Natural Science Foundation of China [51271183, 51171192, 51301172]; National Basic Research Program of China (973 Program) [2013CB632205]; National Key Research and Development Program of China project [2016YFB0301105]; Shenzhen Technology Innovation Plan [CXZZ20140419114548507, CXZZ20140731091722497]; Shenzhen Basic Research Project [JCYJ20150529162228734]; Innovation Fund of Institute of Metal Research (IMR), Chinese Academy of Sciences (CAS)
语种	英语
公开日期	2017-08-17
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/78152]
专题	金属研究所_中国科学院金属研究所
推荐引用方式 GB/T 7714	Li, C. Q.,Xu, D. K.,Yu, S.,et al. Effect of Icosahedral Phase on Crystallographic Texture and Mechanical Anisotropy of Mg-4%Li Based Alloys[J]. JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,2017,33(5):475-480.
APA	Li, C. Q.,Xu, D. K.,Yu, S.,Sheng, L. Y.,&Han, E. H..(2017).Effect of Icosahedral Phase on Crystallographic Texture and Mechanical Anisotropy of Mg-4%Li Based Alloys.JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,33(5),475-480.
MLA	Li, C. Q.,et al."Effect of Icosahedral Phase on Crystallographic Texture and Mechanical Anisotropy of Mg-4%Li Based Alloys".JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY 33.5(2017):475-480.