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Role of Al addition in modifying microstructure and mechanical properties of Mg-1.0 wt% Ca based alloys
Xie, Dongsheng1; Pan, Hucheng1; Li, Man1; Li, Jingren1; Ren, Yuping2; Huang, Qiuyan3; Yang, Changlin4; Ma, Lifeng5; Qin, Gaowu2
Corresponding AuthorPan, Hucheng(panhc@atm.neu.edu.cn)
2020-11-01
Source PublicationMATERIALS CHARACTERIZATION
ISSN1044-5803
Volume169Pages:10
AbstractIn 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.
KeywordWrought Mg alloy Dynamic recrystallization Segregation Precipitation Mechanical property
Funding OrganizationNational 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
DOI10.1016/j.matchar.2020.110608
Indexed BySCI
Language英语
Funding ProjectNational 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 Research AreaMaterials Science ; Metallurgy & Metallurgical Engineering
WOS SubjectMaterials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering ; Materials Science, Characterization & Testing
WOS IDWOS:000584351300003
PublisherELSEVIER SCIENCE INC
Citation statistics
Cited Times:3[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/141284
Collection中国科学院金属研究所
Corresponding AuthorPan, Hucheng
Affiliation1.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
Recommended Citation
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.
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