Segregation of solute atoms along deformation-induced boundaries in an Mg–Zn–Y alloy containing long period stacking ordered phase

doi:10.1016/j.mtla.2019.100287

	Segregation of solute atoms along deformation-induced boundaries in an Mg–Zn–Y alloy containing long period stacking ordered phase
	Shao, X.H.2,3; Jin, Q.Q.2; Zhou, Y.T.2; Yang, H.J.1; Zheng, S.J.2; Zhang, B.2; Chen, Q.3; Ma, X.L.2,4
刊名	Materialia
	2019-06-01
卷号	6
关键词	Atoms Deformation High resolution transmission electron microscopy Lattice theory Magnesium metallography Scanning electron microscopy Ternary alloys Thermodynamic stability Twinning Yttrium alloys Yttrium metallography Zinc alloys Zinc metallography Deformation induced boundaries Deformation kinks Deformation twin High-angle annular dark fields Interfacial segregation Long period stacking ordered phase Longperiod stacking ordered structure (LPSO) Mechanical performance
ISSN号	2589-1529
DOI	10.1016/j.mtla.2019.100287
英文摘要	The interfacial segregation plays an important role in affecting the mechanical performance of various materials. Here we study the segregation behaviors along deformation-induced interfaces in the matrix of an Mg97Zn1Y2 (at%) alloy compressed at 473 K using atomic-scale high-angle annular dark-field scanning transmission electron microscopy (HAADF-STEM) imaging techniques. The kink boundary, twinning-like boundary, and tilt boundary within the matrix grain are detected to be segregated with both solute Zn and Y atoms. The segregation along kink boundary and twinning-like boundary is closely linked to the associated partial dislocations, and these boundaries also could be regarded as the nucleation sites for the formation of long period stacking ordered (LPSO) structures of nanometer scale and stacking faults (SFs) during deformation. For the various tilt boundary, the segregation could be explained based on either the O-lattice theory or partial dislocations. The experimental results may shed some new light on tailoring microstructures for improving mechanical properties and thermal stability of magnesium alloys. © 2019 Elsevier Ltd
WOS研究方向	Materials Science
语种	英语
出版者	Elsevier B.V., Netherlands
WOS记录号	WOS:000536265900031
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/114689]
专题	材料科学与工程学院材料科学与工程学院_特聘教授组
作者单位	1.Materials Fatigue and Fracture Division, Institute of Metal Research, Chinese Academy of Sciences, Shenyang; 110016, China; 2.Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, 72 Wenhua Road, Shenyang; Liaoning; 110016, China; 3.Department of Mechanical Engineering, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka; 819-0395, Japan; 4.School of Materials Science and Engineering, Lanzhou University of Technology, 287 Langongping Road, Lanzhou; 730050, China
推荐引用方式 GB/T 7714	Shao, X.H.,Jin, Q.Q.,Zhou, Y.T.,et al. Segregation of solute atoms along deformation-induced boundaries in an Mg–Zn–Y alloy containing long period stacking ordered phase[J]. Materialia,2019,6.
APA	Shao, X.H..,Jin, Q.Q..,Zhou, Y.T..,Yang, H.J..,Zheng, S.J..,...&Ma, X.L..(2019).Segregation of solute atoms along deformation-induced boundaries in an Mg–Zn–Y alloy containing long period stacking ordered phase.Materialia,6.
MLA	Shao, X.H.,et al."Segregation of solute atoms along deformation-induced boundaries in an Mg–Zn–Y alloy containing long period stacking ordered phase".Materialia 6(2019).