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Enhancing tensile strength of Mg-Al-Ca wrought alloys by increasing Ca concentration
Huang, Qiuyan1; Liu, Yang1; Tong, Min1; Pan, Hucheng2; Yang, Changlin3; Luo, Tianjiao1; Yang, Yuansheng1
Corresponding AuthorPan, Hucheng(panhc@atm.neu.edu.cn) ; Yang, Yuansheng(ysyang@imr.ac.cn)
2020-07-01
Source PublicationVACUUM
ISSN0042-207X
Volume177Pages:9
AbstractThe tensile strengths of the as-extruded Mg-Al-Ca ternary alloys at both ambient and elevated temperatures are enhanced via adding a high content of Ca element up to 6 wt%. High-temperature strength of the present rare-earth-free Mg alloys can be even compared with those of the reported Mg-RE alloys. The as-extruded Mg-6Al-6Ca (wt. %, AX66) alloy exhibits a tensile yield strength (YS) of similar to 404 MPa and an ultimate tensile strength (UTS) of similar to 415 MPa at room temperature, and YS of similar to 225 MPa and UTS of similar to 265 MPa at 200 degrees C, respectively. For the AX66 alloy, the nucleation rates of dynamic recrystallized (DRXed) grains are larger than those of the AX62 and AX64 alloys due to the typical particle stimulated nucleation effect. A number of long-rod Al2Ca phase is dispersed at the grain boundaries of AX66 alloy, and a restricted degree of DRX is induced. Consequently, the majority of alpha-Mg matrix exists in the as-deformed state involving a high density of subgrains. The combined effects of grain refinement hardening, texture hardening and precipitation hardening guarantee the high strength. Specially, numerous micron-scale bulk (Mg, Al)(2)Ca phases are found to distribute among matrix, which play a critical role in maintaining the high thermal-resistance.
KeywordMg wrought alloys Mechanical properties Thermal resistance Grain refinement Dynamic recrystallization
Funding OrganizationNational Key Research and Development Program of China ; National Natural Science Foundation of China ; State Key Laboratory of Solidification Processing in NPU ; Fundamental Research Funds for the Central Universities ; joint R&D fund of Liaoning-Shenyang National Research Center for Materials Science
DOI10.1016/j.vacuum.2020.109356
Indexed BySCI
Language英语
Funding ProjectNational Key Research and Development Program of China[2016YFB0301105] ; National Natural Science Foundation of China[51701211] ; National Natural Science Foundation of China[51971053] ; State Key Laboratory of Solidification Processing in NPU[SKLSP201920] ; Fundamental Research Funds for the Central Universities[N2002011] ; joint R&D fund of Liaoning-Shenyang National Research Center for Materials Science[2019JH3/30100040]
WOS Research AreaMaterials Science ; Physics
WOS SubjectMaterials Science, Multidisciplinary ; Physics, Applied
WOS IDWOS:000538148400014
PublisherPERGAMON-ELSEVIER SCIENCE LTD
Citation statistics
Cited Times:4[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/139079
Collection中国科学院金属研究所
Corresponding AuthorPan, Hucheng; Yang, Yuansheng
Affiliation1.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China
2.Northeastern Univ, Sch Mat Sci & Engn, Key Lab Anisotropy & Texture Mat MoE, Shenyang 110819, Peoples R China
3.Nortfhwestern Polytech Univ, State Key Lab Solidificat Proc, Xian 710072, Shaanxi, Peoples R China
Recommended Citation
GB/T 7714
Huang, Qiuyan,Liu, Yang,Tong, Min,et al. Enhancing tensile strength of Mg-Al-Ca wrought alloys by increasing Ca concentration[J]. VACUUM,2020,177:9.
APA Huang, Qiuyan.,Liu, Yang.,Tong, Min.,Pan, Hucheng.,Yang, Changlin.,...&Yang, Yuansheng.(2020).Enhancing tensile strength of Mg-Al-Ca wrought alloys by increasing Ca concentration.VACUUM,177,9.
MLA Huang, Qiuyan,et al."Enhancing tensile strength of Mg-Al-Ca wrought alloys by increasing Ca concentration".VACUUM 177(2020):9.
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