Enhancing tensile strength of Mg-Al-Ca wrought alloys by increasing Ca concentration

doi:10.1016/j.vacuum.2020.109356

IMR OpenIR

	Enhancing tensile strength of Mg-Al-Ca wrought alloys by increasing Ca concentration
	Huang, Qiuyan 1; Liu, Yang 1; Tong, Min 1; Pan, Hucheng 2; Yang, Changlin 3; Luo, Tianjiao 1; Yang, Yuansheng 1
通讯作者	Pan, Hucheng(panhc@atm.neu.edu.cn) ; Yang, Yuansheng(ysyang@imr.ac.cn)
	2020-07-01
发表期刊	VACUUM
ISSN	0042-207X
卷号	177 页码:9
摘要	The 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.
关键词	Mg wrought alloys Mechanical properties Thermal resistance Grain refinement Dynamic recrystallization
资助者	National 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
DOI	10.1016/j.vacuum.2020.109356
收录类别	SCI
语种	英语
资助项目	National 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研究方向	Materials Science ; Physics
WOS类目	Materials Science, Multidisciplinary ; Physics, Applied
WOS记录号	WOS:000538148400014
出版者	PERGAMON-ELSEVIER SCIENCE LTD
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/321006/139079
专题	中国科学院金属研究所
通讯作者	Pan, Hucheng; Yang, Yuansheng
作者单位	1.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
推荐引用方式 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.