New polytypes of LPSO structures in an Mg-Co-Y alloy

doi:10.1080/14786435.2016.1241909

IMR OpenIR

	New polytypes of LPSO structures in an Mg-Co-Y alloy
	Jin, Q. Q.1,2; Shao, X. H.1; Hu, X. B.1,3; Peng, Z. Z.1,2; Ma, X. L.1
通讯作者	Ma, X. L.(xlma@imr.ac.cn)
	2017
发表期刊	PHILOSOPHICAL MAGAZINE
ISSN	1478-6435
卷号	97 期号:1 页码:1-16
摘要	The magnesium alloys containing long-period stacking ordered (LPSO) structures exhibit excellent mechanical properties. Each LPSO structure is known to contain either ABCA or ABC building block and feature its own stacking sequences. By atomic-scale high-angle annular dark field scanning transmission electron microscopy, we find the co-existence of ABCA and ABC building block in a single LPSO structure of the as-cast Mg92Co2Y6 (at.%) alloy, leading to the formation of six new polytypes of the LPSO structures determined as 29H, 51R, 60H, 72R, 102R and 192R. The lattice parameter of each LPSO structure is derived as a(LPSO) =a(Mg) = 0.321 nm and c(LPSO) = 1/2n x c(Mg) (n presents the number of basal layers in a unit cell). The stacking sequences and the space groups of these newly identified LPSO structures are proposed based on the electron diffraction and atomic-scale aberration-corrected high-resolution images. A random distribution of Co/Y elements in the basal planes of ABCA and ABC structural units is also observed and discussed.
关键词	Magnesium alloys long-period stacking ordered (LPSO) structure scanning transmission electron microscopy electron diffraction
资助者	National Science Foundation of China ; Innovation Fund of IMR ; Youth Fund of SYNL fund
DOI	10.1080/14786435.2016.1241909
收录类别	SCI
语种	英语
资助项目	National Science Foundation of China[51301177] ; Innovation Fund of IMR[SCJJ-2013-PY-08] ; Innovation Fund of IMR[2015-PY08] ; Youth Fund of SYNL fund[2015FP18]
WOS研究方向	Materials Science ; Metallurgy & Metallurgical Engineering ; Physics
WOS类目	Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering ; Physics, Applied ; Physics, Condensed Matter
WOS记录号	WOS:000390644600001
出版者	TAYLOR & FRANCIS LTD
引用统计	被引频次：35[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/321006/123446
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, Shenyang Natl Lab Mat Sci, Inst Met Res, Shenyang, Peoples R China 2.Univ Sci & Technol China, Sch Mat Sci & Engn, Hefei, Peoples R China 3.Japan Fine Ceram Ctr, Nanostruct Res Lab, Nagoya, Aichi 4568587, Japan
推荐引用方式 GB/T 7714	Jin, Q. Q.,Shao, X. H.,Hu, X. B.,et al. New polytypes of LPSO structures in an Mg-Co-Y alloy[J]. PHILOSOPHICAL MAGAZINE,2017,97(1):1-16.
APA	Jin, Q. Q.,Shao, X. H.,Hu, X. B.,Peng, Z. Z.,&Ma, X. L..(2017).New polytypes of LPSO structures in an Mg-Co-Y alloy.PHILOSOPHICAL MAGAZINE,97(1),1-16.
MLA	Jin, Q. Q.,et al."New polytypes of LPSO structures in an Mg-Co-Y alloy".PHILOSOPHICAL MAGAZINE 97.1(2017):1-16.