Rapid drop in ductility of the bimodal-structured Mg-15Gd binary alloy during early aging

doi:10.1016/j.jma.2023.03.002

IMR OpenIR

	Rapid drop in ductility of the bimodal-structured Mg-15Gd binary alloy during early aging
	Li, R. G.1; Zhou, S. Q.1; Zhang, H.1; Wu, R. Z.2; Wu, D.1,5; Li, J. R.1; Liu, B. S.1; Li, S. S.1; Li, X.1,3; Wang, B. J.4
通讯作者	Wu, D.(dwu@imr.ac.cn) ; Li, S. S.(shanshanli_work@126.com) ; Li, X.(ltmlx@163.com)
	2024-09-01
发表期刊	JOURNAL OF MAGNESIUM AND ALLOYS
ISSN	2213-9567
卷号	12 期号:9 页码:3772-3779
摘要	A bimodal-structured Mg-15Gd binary alloy with 45% volume fraction of elongated grains and 55% of dynamically recrystallized (DRXed) grains is fabricated by the extrusion process. The precipitating behavior correlating with the evolution of mechanical properties is systematically characterized during the subsequent aging treatment at 200 degrees C. The extruded alloy presents an outstanding strength with tensile yield strength of 466 MPa and ultimate tensile strength of 500 MPa at peak aging condition, while the elongation drops from 9.2% in extrusion state to 3.1%. It is found there obviously exist a rapidly decreasing range of ductility at the early stage of aging. Just during this time, the nano precipitates form preferentially at lamellar dislocation boundaries (LDBs) within the elongated grains, but there is no dense and uniform precipitation in the matrix. The results suggest that the low elongation in the aged Mg-15Gd alloy is mainly attributed to the nano precipitates prior formed at the LDBs with a high density in the elongated grains. The related mechanism has been clarified. (c) 2023 Chongqing University. Publishing services provided by Elsevier B.V. on behalf of KeAi Communications Co. Ltd. This is an open access article under the CC BY-NC-ND license ( http://creativecommons.org/licenses/by-nc-nd/4.0/ ) Peer review under responsibility of Chongqing University
关键词	Mg-Gd alloy Bimodal structure Segregation Precipitate Dislocation Boundary.
资助者	National Natural Science Foundation of China ; Natural Science Foun-dation of Liaoning Province of China ; Open Foundation of Key Laboratory of Superlight Ma-terials & Surface Technology of Ministry of Education
DOI	10.1016/j.jma.2023.03.002
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation of China[52171121] ; National Natural Science Foundation of China[51971151] ; National Natural Science Foundation of China[52201131] ; National Natural Science Foundation of China[52201132] ; National Natural Science Foundation of China[52171055] ; National Natural Science Foundation of China[52071220] ; National Natural Science Foundation of China[XLYC1907083] ; Natural Science Foun-dation of Liaoning Province of China[2022-NLTS-18-01] ; Open Foundation of Key Laboratory of Superlight Ma-terials & Surface Technology of Ministry of Education[HEU10202205]
WOS研究方向	Metallurgy & Metallurgical Engineering
WOS类目	Metallurgy & Metallurgical Engineering
WOS记录号	WOS:001356180500001
出版者	KEAI PUBLISHING LTD
引用统计	被引频次：13[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/321006/191435
专题	中国科学院金属研究所
通讯作者	Wu, D.; Li, S. S.; Li, X.
作者单位	1.Shenyang Univ Chem Technol, Sch Mech & Power Engn, Shenyang 110142, Peoples R China 2.Harbin Engn Univ, Key Lab Superlight Mat & Surface Technol, Minist Educ, Harbin 150001, Peoples R China 3.Shenyang Univ Chem Technol, Shenyang Key Lab Utilizat Technol Magnesium & Calc, Shenyang 110142, Peoples R China 4.Shenyang Ligong Univ, Sch Environm & Chem Engn, Shenyang 110159, Peoples R China 5.Chinese Acad Sci, Inst Met Res, CAS Key Lab Nucl Mat & Safety Assessment, 62 Wencui Rd, Shenyang 110016, Peoples R China
推荐引用方式 GB/T 7714	Li, R. G.,Zhou, S. Q.,Zhang, H.,et al. Rapid drop in ductility of the bimodal-structured Mg-15Gd binary alloy during early aging[J]. JOURNAL OF MAGNESIUM AND ALLOYS,2024,12(9):3772-3779.
APA	Li, R. G..,Zhou, S. Q..,Zhang, H..,Wu, R. Z..,Wu, D..,...&Wang, B. J..(2024).Rapid drop in ductility of the bimodal-structured Mg-15Gd binary alloy during early aging.JOURNAL OF MAGNESIUM AND ALLOYS,12(9),3772-3779.
MLA	Li, R. G.,et al."Rapid drop in ductility of the bimodal-structured Mg-15Gd binary alloy during early aging".JOURNAL OF MAGNESIUM AND ALLOYS 12.9(2024):3772-3779.