Ultra-fine grain size and exceptionally high strength in dilute Mg-Ca alloys achieved by conventional one-step extrusion

doi:10.1016/j.matlet.2018.11.080

CORC > 金属研究所 > 中国科学院金属研究所

	Ultra-fine grain size and exceptionally high strength in dilute Mg-Ca alloys achieved by conventional one-step extrusion
	Pan, Hucheng 2; Yang, Changlin 1; Yang, Yantao 2; Dai, Yongqiang 2; Zhou, Dengshan 2; Chai, Linjiang 3; Huang, Qiuyan 4; Yang, Qingshan 5; Liu, Shengming 6; Ren, Yuping 2
刊名	MATERIALS LETTERS
	2019-02-15
卷号	237 页码:65-68
关键词	Wrought Mg alloy Grain size Segregations Recrystallization Strength properties
ISSN号	0167-577X
DOI	10.1016/j.matlet.2018.11.080
通讯作者	Pan, Hucheng(panhc@atm.neu.edu.cn) ; Qin, Gaowu()
英文摘要	We reported that the Mg-Ca dilute alloys can exhibit ultra-fine grain size (less than 1 um) and the exceptionally high yield strength, e.g., similar to 290 MPa in the Mg-0.1 wt% Ca alloy and similar to 377 MPa in Mg-1.0 wt% Ca alloy, achieved by conventional one-step extrusion. Both increased activations of non-basal slips due to Ca addition and the dynamic partitioning of Ca atoms during extrusion are believed to play the critical role in facilitating formation of the submicron matrix grains. Multi-scale substructures, including the ultrafine recrystallized grains, the mono-dispersive Mg-2 Ca nano-phases, residual dislocations and Ca enriched sub-grain boundaries contribute to the high strength. (C) 2018 Elsevier B.V. All rights reserved.
资助项目	National Key Research and Development Program of China[2016YFB0701200] ; National Natural Science Foundation of China[51525101] ; National Natural Science Foundation of China[U1610253] ; National Natural Science Foundation of China[51501032] ; National Natural Science Foundation of China[51701033] ; State Key Laboratory of Solidification Processing in NWPU[SKLSP201738] ; Open Research Subject of Key Laboratory (Research Base)[szjj2017-018] ; Fundamental Research Funds for the Central Universities[N170204011]
WOS研究方向	Materials Science ; Physics
语种	英语
出版者	ELSEVIER SCIENCE BV
WOS记录号	WOS:000454609700017
资助机构	National Key Research and Development Program of China ; National Natural Science Foundation of China ; State Key Laboratory of Solidification Processing in NWPU ; Open Research Subject of Key Laboratory (Research Base) ; Fundamental Research Funds for the Central Universities
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/130943]
专题	金属研究所_中国科学院金属研究所
通讯作者	Pan, Hucheng; Qin, Gaowu
作者单位	1.Northwestern Polytech Univ, State Key Lab Solidificat Proc, Xian 710072, Shaanxi, Peoples R China 2.Northeastern Univ, Sch Mat Sci & Engn, Minist Educ, Key Lab Anisotropy & Texture Mat, Shenyang 110819, Liaoning, Peoples R China 3.Chongqing Univ Technol, Coll Mat Sci & Engn, Chongqing 400054, Peoples R China 4.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Liaoning, Peoples R China 5.Chongqing Univ Sci & Technol, Sch Met & Mat Engn, Chongqing 401331, Peoples R China 6.Xihua Univ, Coll Mat Sci & Engn, Chengdu 610039, Sichuan, Peoples R China
推荐引用方式 GB/T 7714	Pan, Hucheng,Yang, Changlin,Yang, Yantao,et al. Ultra-fine grain size and exceptionally high strength in dilute Mg-Ca alloys achieved by conventional one-step extrusion[J]. MATERIALS LETTERS,2019,237:65-68.
APA	Pan, Hucheng.,Yang, Changlin.,Yang, Yantao.,Dai, Yongqiang.,Zhou, Dengshan.,...&Qin, Gaowu.(2019).Ultra-fine grain size and exceptionally high strength in dilute Mg-Ca alloys achieved by conventional one-step extrusion.MATERIALS LETTERS,237,65-68.
MLA	Pan, Hucheng,et al."Ultra-fine grain size and exceptionally high strength in dilute Mg-Ca alloys achieved by conventional one-step extrusion".MATERIALS LETTERS 237(2019):65-68.