南方科技大学知识苑(SUSTech KC): Effect of twin and grain size strengthening on tensile properties of a multi-directionally impact forged Mg–Gd

题名	Effect of twin and grain size strengthening on tensile properties of a multi-directionally impact forged Mg–Gd–Y alloy
作者	Lu，S. H.1,2 ; Wu，D.2; Yan，M.1 ; Chen，R. S.2
通讯作者	Yan，M.; Chen，R. S.
发表日期	2021-11-01
DOI	10.1016/j.jmrt.2021.10.060
发表期刊	Journal of Materials Research and Technology-JMR&T 影响因子和分区
ISSN	2238-7854
EISSN	2214-0697
卷号	15页码:4502-4515
摘要	The microstructure and tensile properties of twin and grain size strengthening Mg–6.85Gd–5.79Y–0.44Zr alloy have been investigated and characterized by optical microscopy (OM), scanning electron microscopy (SEM), and electron back-scattering diffraction (EBSD). Their room temperature tensile results exhibit that twin strengthening can enhance the strength of Mg–Gd–Y–Zr alloy but sacrifice its ductility or toughness. This should be attributed that lenticular {10−12} twins with high-stress localization directly lead to a brittle failure. In contrast, the strength, ductility, and toughness were synchronously improved for the grain size strengthening Mg–Gd–Y–Zr alloy, i.e., the ultimate tensile strength, uniform elongation, and static toughness increased to 254 (259–245) MPa, 1.02 (1.40–0.55)%, and 5.7 (6.7–4.2) MJ/m, respectively. This ductility increment should have resulted from fine recrystallization that was free from stress concentration and accommodated the tensile strain by more non-basal slip and grain boundary sliding or grain rotation.
关键词	Grain size strengthening Mg–Gd–Y alloy Multi-directionally impact forge Tensile properties Twin strengthening
相关链接	[Scopus记录]
收录类别	SCI ; EI
语种	英语
学校署名	第一 ; 通讯
资助项目	National Natural Science Foundation of China[52171055,51301173,51601193,51701218] ; National Science and Technology Major Project of China[2017ZX04014001] ; Natural Science Foundation of Liaoning Province[20180550799]
WOS研究方向	Materials Science ; Metallurgy & Metallurgical Engineering
WOS类目	Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS记录号	WOS:000717684300006
出版者	ELSEVIER
EI入藏号	20214411105201
EI主题词	Backscattering ; Grain boundary sliding ; Grain size and shape ; Scanning electron microscopy ; Tensile strain ; Tensile strength ; Zircaloy
EI分类号	Metallurgy and Metallography:531 ; Mechanics:931.1 ; Solid State Physics:933 ; Materials Science:951
Scopus记录号	2-s2.0-85118267118
来源库	Scopus
引用统计	被引频次[WOS]：17
成果类型	期刊论文
条目标识符	http://sustech.caswiz.com/handle/2SGJ60CL/254832
专题	前沿与交叉科学研究院
作者单位	1.Academy for Advanced Interdisciplinary Studies,Southern University of Science and Technology,Shenzhen,518055,China 2.Institute of Metal Research,Chinese Academy of Sciences,Shenyang,72 Wenhua Road,110016,China
第一作者单位	前沿与交叉科学研究院
通讯作者单位	前沿与交叉科学研究院
第一作者的第一单位	前沿与交叉科学研究院
推荐引用方式 GB/T 7714	Lu，S. H.,Wu，D.,Yan，M.,等. Effect of twin and grain size strengthening on tensile properties of a multi-directionally impact forged Mg–Gd–Y alloy[J]. Journal of Materials Research and Technology-JMR&T,2021,15:4502-4515.
APA	Lu，S. H.,Wu，D.,Yan，M.,&Chen，R. S..(2021).Effect of twin and grain size strengthening on tensile properties of a multi-directionally impact forged Mg–Gd–Y alloy.Journal of Materials Research and Technology-JMR&T,15,4502-4515.
MLA	Lu，S. H.,et al."Effect of twin and grain size strengthening on tensile properties of a multi-directionally impact forged Mg–Gd–Y alloy".Journal of Materials Research and Technology-JMR&T 15(2021):4502-4515.