Role of Al addition in modifying microstructure and mechanical properties of Mg-1.0 wt% Ca based alloys

doi:10.1016/j.matchar.2020.110608

IMR OpenIR

	Role of Al addition in modifying microstructure and mechanical properties of Mg-1.0 wt% Ca based alloys
	Xie, Dongsheng 1; Pan, Hucheng 1; Li, Man 1; Li, Jingren 1; Ren, Yuping 2; Huang, Qiuyan 3; Yang, Changlin 4; Ma, Lifeng 5; Qin, Gaowu 2
通讯作者	Pan, Hucheng(panhc@atm.neu.edu.cn)
	2020-11-01
发表期刊	MATERIALS CHARACTERIZATION
ISSN	1044-5803
卷号	169 页码:10
摘要	In this work, the role of Al addition in modifying the microstructure and mechanical properties of the Mg-1.0Ca-xAl (x = 0.6, 1.0 wt%; termed as XA10 and XA11, respectively) based alloys has been systematically investigated. Microstructural examination showed that, when the Al content is low, the Al and Ca atoms were inclined to segregate to the dislocation lines in the XA10 sample. As a result, the mobility of dislocation was restrained and the dynamic recovery behavior was hindered, which leads to a low degree of dynamic re crystallization. When the Al content is high, in contrast, no apparent Ca/Al segregations along dislocations have been found in XA11-0 extrusion billet during the whole stages of processing, which results in the enhanced dislocation mobility. Consequently, the recovery of dislocations and dynamic recrystallization rate can be largely enhanced at the earlier stage of extrusion. More importantly, subsequently formed high density Guinier-Preston (G.P.) zones and nano-disk Al2Ca phases in the high-Al content Mg sample can play an effective role in inhibiting the growth of subgrains and dynamically recrystallized (DRXed) grains, which enhance the thermal stability of high density low angular grain boundaries (LAGBs) in the later extrusion stage. The high density nano-disk phases, high volume fraction of DRXed grains, as well as the high density LAGBs in the un-DRXed grains, can together contribute to both high strength and good elongation of the XA11 sample. The findings lead to the controllable Mg-Ca based alloy designing strategy that can improve the strength and ductility simultaneously.
关键词	Wrought Mg alloy Dynamic recrystallization Segregation Precipitation Mechanical property
资助者	National Natural Science Foundation of China, China ; Project of Promoting Talents in Liaoning province, China ; Young Elite Scientists Sponsorship Program by CAST ; State Key Laboratory of Solidification Processing in NPU, China ; Fundamental Research Fund for the Central Universities, China ; Joint Research Fund Liaoning-Shenyang National Laboratory for Materials Science, China
DOI	10.1016/j.matchar.2020.110608
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation of China, China[U1610253] ; National Natural Science Foundation of China, China[51525101] ; National Natural Science Foundation of China, China[51701211] ; National Natural Science Foundation of China, China[51971053] ; Project of Promoting Talents in Liaoning province, China[XLYC1808038] ; Young Elite Scientists Sponsorship Program by CAST[2019-2021QNRC001] ; Young Elite Scientists Sponsorship Program by CAST[2019-2021QNRC002] ; State Key Laboratory of Solidification Processing in NPU, China[SKLSP201920] ; Fundamental Research Fund for the Central Universities, China[N2002011] ; Joint Research Fund Liaoning-Shenyang National Laboratory for Materials Science, China[2019JH3/30100040]
WOS研究方向	Materials Science ; Metallurgy & Metallurgical Engineering
WOS类目	Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering ; Materials Science, Characterization & Testing
WOS记录号	WOS:000584351300003
出版者	ELSEVIER SCIENCE INC
引用统计	被引频次：19[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/321006/141284
专题	中国科学院金属研究所
通讯作者	Pan, Hucheng
作者单位	1.Northeastern Univ, Sch Mat Sci & Engn, Minist Educ, Key Lab Anisotropy & Texture Mat, Shenyang 110819, Liaoning, Peoples R China 2.Northeastern Univ, State Key Lab Rolling & Automat, Shenyang 110819, Liaoning, Peoples R China 3.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Liaoning, Peoples R China 4.Northwestern Polytech Univ, State Key Lab Solidificat Proc, Xian 710072, Shaanxi, Peoples R China 5.Taiyuan Univ Sci & Technol, Shanxi Prov Key Lab Met Equipment Design & Techno, Taiyuan 030024, Peoples R China
推荐引用方式 GB/T 7714	Xie, Dongsheng,Pan, Hucheng,Li, Man,et al. Role of Al addition in modifying microstructure and mechanical properties of Mg-1.0 wt% Ca based alloys[J]. MATERIALS CHARACTERIZATION,2020,169:10.
APA	Xie, Dongsheng.,Pan, Hucheng.,Li, Man.,Li, Jingren.,Ren, Yuping.,...&Qin, Gaowu.(2020).Role of Al addition in modifying microstructure and mechanical properties of Mg-1.0 wt% Ca based alloys.MATERIALS CHARACTERIZATION,169,10.
MLA	Xie, Dongsheng,et al."Role of Al addition in modifying microstructure and mechanical properties of Mg-1.0 wt% Ca based alloys".MATERIALS CHARACTERIZATION 169(2020):10.