The effect of precipitates on the fracture behavior and tensile properties of Mg-14Gd-0.5Zr (wt.%) alloy

doi:10.1016/j.jmst.2023.08.062

IMR OpenIR

	The effect of precipitates on the fracture behavior and tensile properties of Mg-14Gd-0.5Zr (wt.%) alloy
	Li, Chunxiao 1,2; Wei, Jianxiong 1,2; Jin, Jianfeng 4; Yan, Hong 2,3; Shan, Zhiwei 5,6; Mao, Yaozong 7; Chen, Rongshi 2
通讯作者	Yan, Hong(Yanhong581@163.com) ; Chen, Rongshi(rschen@imr.ac.cn)
	2024-05-01
发表期刊	JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
ISSN	1005-0302
卷号	180 页码:226-242
摘要	The effect of precipitation aging on the fracture behavior of cast Mg-14.23Gd-0.45Zr (wt.%) alloy at room temperature has been studied in this work. Uniaxial tensile and three-point bending tests were conducted on samples peak-aged at 175, 200, 225, and 250 degrees C. Notably, samples aged at 175 degrees C and 200 degrees C exhibited premature fracture during the uniaxial tensile test. Through fractographic observations of the tensile test samples and electron backscattered diffraction (EBSD) analysis on the samples subjected to three-point bending tests, a preferential formation of cleavage cracks in samples aged at 175 degrees C and 200 degrees C was identified as the reason for their premature fracture. The X-ray diffraction (XRD) results and transmission electron microscopy (TEM) observations of precipitates indicate that the dominant strengthening precipitates in all peak-aged samples are of the ,B' phase, and their size significantly influences the formation of cleavage cracks. This phenomenon is attributed to the shearing mechanism of precipitates. Specifically, the smaller ,B' precipitates formed under the aging temperature of 175-200 degrees C are susceptible to dislocation shearing, leading to the formation of cleavage cracks. In contrast, the larger size of ,B' precipitates formed under the aging temperature of 225-250 degrees C provides resistance to shearing, resulting in the restrained formation of cleavage cracks and ultimately contributing to the enhancement of the ultimate tensile strength.(c) 2023 Published by Elsevier Ltd on behalf of The editorial office of Journal of Materials Science & Technology.
关键词	Fracture Mg -RE alloy Precipitate Aging treatment Mechanical property
资助者	National Natural Science Foundation of China ; Natural Science Foundation of Shandong Province ; Natural Science Foundation of Liaoning Province ; Bintech-IMR RD Program
DOI	10.1016/j.jmst.2023.08.062
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation of China[52271107] ; National Natural Science Foundation of China[51701218] ; Natural Science Foundation of Shandong Province[ZR2021ME241] ; Natural Science Foundation of Liaoning Province[2020 -MS -004] ; Bintech-IMR RD Program[GYY- JSBU-2022-012]
WOS研究方向	Materials Science ; Metallurgy & Metallurgical Engineering
WOS类目	Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS记录号	WOS:001124473400001
出版者	JOURNAL MATER SCI TECHNOL
引用统计	被引频次：9[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/321006/182871
专题	中国科学院金属研究所
通讯作者	Yan, Hong; Chen, Rongshi
作者单位	1.Univ Sci & Technol China, Sch Mat Sci & Engn, Hefei 230026, Peoples R China 2.Chinese Acad Sci, Shi Changxu Innovat Ctr Adv Mat, Inst Met Res, Shenyang 110016, Peoples R China 3.Shandong Univ Sci & Technol, Sch Mat Sci & Engn, Qingdao 266590, Peoples R China 4.Beijing Inst Space Long March Vehicle, Beijing 100076, Peoples R China 5.Xi An Jiao Tong Univ, Ctr Adv Mat Performance Nanoscale CAMP Nano, Xian 710049, Peoples R China 6.Xi An Jiao Tong Univ, HARCC, State Key Lab Mech Behav Mat, Xian 710049, Peoples R China 7.Binzhou Inst Technol, Key Lab Adv Aluminium Mat & Technol, Weiqiao UCAS Sci & Technol Pk, Binzhou 256606, Peoples R China
推荐引用方式 GB/T 7714	Li, Chunxiao,Wei, Jianxiong,Jin, Jianfeng,et al. The effect of precipitates on the fracture behavior and tensile properties of Mg-14Gd-0.5Zr (wt.%) alloy[J]. JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,2024,180:226-242.
APA	Li, Chunxiao.,Wei, Jianxiong.,Jin, Jianfeng.,Yan, Hong.,Shan, Zhiwei.,...&Chen, Rongshi.(2024).The effect of precipitates on the fracture behavior and tensile properties of Mg-14Gd-0.5Zr (wt.%) alloy.JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,180,226-242.
MLA	Li, Chunxiao,et al."The effect of precipitates on the fracture behavior and tensile properties of Mg-14Gd-0.5Zr (wt.%) alloy".JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY 180(2024):226-242.