Basal shearing of twinned stacking faults and its effect on mechanical properties in an Mg-Zn-Y alloy with LPSO phase

doi:10.1016/j.msea.2020.139109

IMR OpenIR

	Basal shearing of twinned stacking faults and its effect on mechanical properties in an Mg-Zn-Y alloy with LPSO phase
	Shao, X. H.1,2; Jin, Q. Q.1; Zhou, Y. T.1; Yang, H. J.3; Zheng, S. J.1; Zhang, B.1; Chen, Q.2; Ma, X. L.1,4
通讯作者	Ma, X. L.(xlma@imr.ac.cn)
	2020-03-27
发表期刊	MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
ISSN	0921-5093
卷号	779 页码:8
摘要	The precipitates inside deformation twins may block the dislocation motion and consequently affect the mechanical property of materials. Herein, at the atomic level, we directly visualize that the basal dislocation slips shear the twinned stacking faults (TSFs) within the deformation twins in an Mg-Zn-Y alloy containing long-period stacking ordered (LPSO) structures. The TSFs, enriched with solute atoms, could be considered as precipitates inside deformation twins. They are sheared by a single step or multiple shearing steps on the basal plane. The microstructural fingerprints, i.e., the width of basal shearing steps, enable a quantitative assessment of the local and total plastic shear strain due to the basal dislocation within the deformation twins. The TSFs can block dislocation slip, while the dislocation shearing induces large lattice distortion and even solute atoms redistribution at local intersection. The TSFs-dislocation interaction is expected to lower the basal dislocation motion and resultantly modulate the mechanical properties of magnesium alloys. These results may offer a novel strategy for strengthening and toughening magnesium alloys via tailoring the shearable precipitates.
关键词	Magnesium alloy Long-period stacking ordered phase Deformation twin Stacking fault Shearable precipitate
资助者	National Natural Science Foundation of China ; Fund of SYNL ; JSPS Postdoctoral Fellowship for Overseas Researchers
DOI	10.1016/j.msea.2020.139109
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[51975552] ; Fund of SYNL[2015FP18] ; Fund of SYNL[2017FP16] ; JSPS Postdoctoral Fellowship for Overseas Researchers[P17732]
WOS研究方向	Science & Technology - Other Topics ; Materials Science ; Metallurgy & Metallurgical Engineering
WOS类目	Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS记录号	WOS:000524354800003
出版者	ELSEVIER SCIENCE SA
引用统计	被引频次：29[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/321006/138323
专题	中国科学院金属研究所
通讯作者	Ma, X. L.
作者单位	1.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China 2.Kyushu Univ, Dept Mech Engn, Nishi Ku, 744 Motooka, Fukuoka 8190395, Japan 3.Chinese Acad Sci, Inst Met Res, Lab Fatigue & Fracture Mat, Shenyang 110016, Peoples R China 4.Lanzhou Univ Technol, Sch Mat Sci & Engn, 287 Langongping Rd, Lanzhou 730050, Peoples R China
推荐引用方式 GB/T 7714	Shao, X. H.,Jin, Q. Q.,Zhou, Y. T.,et al. Basal shearing of twinned stacking faults and its effect on mechanical properties in an Mg-Zn-Y alloy with LPSO phase[J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,2020,779:8.
APA	Shao, X. H..,Jin, Q. Q..,Zhou, Y. T..,Yang, H. J..,Zheng, S. J..,...&Ma, X. L..(2020).Basal shearing of twinned stacking faults and its effect on mechanical properties in an Mg-Zn-Y alloy with LPSO phase.MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,779,8.
MLA	Shao, X. H.,et al."Basal shearing of twinned stacking faults and its effect on mechanical properties in an Mg-Zn-Y alloy with LPSO phase".MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING 779(2020):8.