Discovery of a bulk C36-type MgZn2 structure step by step transformed from the C14 prototype laves phase structure

doi:10.1007/s10853-021-06711-6

IMR OpenIR

	Discovery of a bulk C36-type MgZn2 structure step by step transformed from the C14 prototype laves phase structure
	Yang, Tong 1; Lu, Jiangbo 2; Li, Kai 1; Kong, Yi 1; Zhang, Zhenjun 3; Long, Qianxin 4,5; Lan, Xinyue 1; Lu, Qiang 1; Du, Yong 1
通讯作者	Li, Kai(leking@csu.edu.cn) ; Kong, Yi(yikong@csu.edu.cn)
	2022
发表期刊	JOURNAL OF MATERIALS SCIENCE
ISSN	0022-2461
卷号	57 期号:4 页码:2999-3009
摘要	MgZn2 phase is the prototype of hexagonal C14 Laves phase, acting as an important intermetallic compound. Here we first observe the atomic-scale structure of C36-type MgZn2 Laves phase by high-angle annular dark-field scanning transmission electron microscopy. Solid atomic-scale evidence is provided for the finding that C14 structural precipitate can totally transform to C36 structure during extremely long-time over-aging at medium temperatures in an Al-Zn-Mg alloy, rather than C36 stacking faults as previously reported. Intermediate structures between C14 and C36 were observed along [0001] and [(1) over bar2 (1) over bar0] directions. Two possible transformation paths are illustrated based on the synchroshear mechanism, and their atomic resolution evidence is provided. Ab initio molecular dynamics calculations support our inference on the transformation process. This type of Laves phase transformation provides a new strategy for designing alloys that contain Laves phases as hardening precipitates.
资助者	National Natural Science Foundation of China ; Youth Innovation Promotion Association CAS
DOI	10.1007/s10853-021-06711-6
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation of China[52071340] ; National Natural Science Foundation of China[51820105001] ; National Natural Science Foundation of China[51771234] ; Youth Innovation Promotion Association CAS[2021192]
WOS研究方向	Materials Science
WOS类目	Materials Science, Multidisciplinary
WOS记录号	WOS:000737750100084
出版者	SPRINGER
引用统计	被引频次：4[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/321006/173621
专题	中国科学院金属研究所
通讯作者	Li, Kai; Kong, Yi
作者单位	1.Cent South Univ, State Key Lab Powder Met, Changsha 410083, Peoples R China 2.Shaanxi Normal Univ, Sch Phys & Informat Technol, Xian 710119, Peoples R China 3.Chinese Acad Sci, Inst Met Res, Mat Fatigue & Fracture Div, Shenyang 110016, Peoples R China 4.Guilin Univ Elect Technol, Sch Mat Sci & Engn, Guilin 541004, Peoples R China 5.Guilin Univ Elect Technol, Guangxi Key Lab Informat Mat, Guilin 541004, Peoples R China
推荐引用方式 GB/T 7714	Yang, Tong,Lu, Jiangbo,Li, Kai,et al. Discovery of a bulk C36-type MgZn2 structure step by step transformed from the C14 prototype laves phase structure[J]. JOURNAL OF MATERIALS SCIENCE,2022,57(4):2999-3009.
APA	Yang, Tong.,Lu, Jiangbo.,Li, Kai.,Kong, Yi.,Zhang, Zhenjun.,...&Du, Yong.(2022).Discovery of a bulk C36-type MgZn2 structure step by step transformed from the C14 prototype laves phase structure.JOURNAL OF MATERIALS SCIENCE,57(4),2999-3009.
MLA	Yang, Tong,et al."Discovery of a bulk C36-type MgZn2 structure step by step transformed from the C14 prototype laves phase structure".JOURNAL OF MATERIALS SCIENCE 57.4(2022):2999-3009.