Dislocation configuration and solute redistribution of low angle kink boundaries in an extruded Mg–Zn–Y–Zr alloy

doi:10.1016/j.msea.2017.01.088

	Dislocation configuration and solute redistribution of low angle kink boundaries in an extruded Mg–Zn–Y–Zr alloy
	Peng, Z. Z.1; Shao, X. H.1; Jin, Q. Q.1,2; Liu, J. F.1; Ma, X. L.1,3
	2017-02-27
发表期刊	Materials Science and Engineering A
ISSN	09215093
卷号	687 页码:211-220
摘要	The microstructural and chemical features of deformation-induced interfaces are one of key issues in engineering materials because they determine plastic deformation behavior and thus affect mechanical properties of the materials. Using atomic-resolution high-angle annular dark-field scanning transmission electron microscopy, we characterized deformation-induced low angle kink boundaries (LAKBs) in long period stacking ordered (LPSO) structures in an extruded Mg–2.3Zn–6.6Y–0.56Zr (wt%) alloy. We clarified that the LAKB in LPSO phase consists of an array of dislocations, while the LAKB in Mg interlayers sandwiched between LPSO phases is composed of an array of dissociated and/or dislocations. Correspondingly, the former and the latter LAKBs are depleted and segregated with Zn/Y/Zr elements, respectively. I2 stacking fault (SF) is meanwhile generated in Mg layers, and its energy is evaluated approximately 0.1–1.6 mJ m−2. Deformation-induced LAKBs, the resultant redistribution of solute elements, and precipitated I2 SFs, are proposed to be responsible for the high strength of extruded Mg alloys containing LPSO structures. © 2017 Elsevier B.V.
关键词	High resolution transmission electron microscopy High strength alloys Scanning electron microscopy Zircaloy Dislocation configurations Engineering materials HAADF-STEM High-angle annular dark fields Kink Longperiod stacking ordered structure (LPSO) Plastic deformation behavior Solute redistribution
DOI	10.1016/j.msea.2017.01.088
收录类别	EI ; SCIE
语种	英语
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:000395839800026
出版者	Elsevier Ltd
EI入藏号	20170503306571
EI主题词	Magnesium alloys
EI分类号	531.1 Metallurgy - 531.2 Metallography - 542.2 Magnesium and Alloys - 741.3 Optical Devices and Systems
来源库	Compendex
分类代码	531.1 Metallurgy - 542.2 Magnesium and Alloys - 741.3 Optical Devices and Systems
引用统计	被引频次：32[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	https://ir.lut.edu.cn/handle/2XXMBERH/114787
专题	材料科学与工程学院
通讯作者	Shao, X. H.; Ma, X. L.
作者单位	1.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, 72 Wenhua Rd, Shenyang 110016, Peoples R China; 2.Univ Sci & Technol China, Sch Mat Sci & Engn, Hefei 230026, Peoples R China; 3.Lanzhou Univ Technol, Sch Mat Sci & Engn, Langongping Rd 287, Lanzhou 730050, Peoples R China
通讯作者单位	材料科学与工程学院
推荐引用方式 GB/T 7714	Peng, Z. Z.,Shao, X. H.,Jin, Q. Q.,et al. Dislocation configuration and solute redistribution of low angle kink boundaries in an extruded Mg–Zn–Y–Zr alloy[J]. Materials Science and Engineering A,2017,687:211-220.
APA	Peng, Z. Z.,Shao, X. H.,Jin, Q. Q.,Liu, J. F.,&Ma, X. L..(2017).Dislocation configuration and solute redistribution of low angle kink boundaries in an extruded Mg–Zn–Y–Zr alloy.Materials Science and Engineering A,687,211-220.
MLA	Peng, Z. Z.,et al."Dislocation configuration and solute redistribution of low angle kink boundaries in an extruded Mg–Zn–Y–Zr alloy".Materials Science and Engineering A 687(2017):211-220.