Oxide nodule assisting fatigue crack initiation in hierarchical anisotropic nanostructured Mg-RE alloy

doi:10.1016/j.ijfatigue.2023.107820

IMR OpenIR

	Oxide nodule assisting fatigue crack initiation in hierarchical anisotropic nanostructured Mg-RE alloy
	Chen, Yao 1,2; Shuai, Qi 1; Wu, Yujuan 3; Peng, Liming 3; Shao, Xiaohong 4; Liu, Fulin 1; He, Chao 1; Li, Lang 1; Liu, Yongjie 1; Wang, Qingyuan 1,5; Xie, Shaoxiong 2,5; Chen, Qiang 2
通讯作者	He, Chao(hechao@scu.edu.cn) ; Wang, Qingyuan(wangqy@scu.edu.cn)
	2023-10-01
发表期刊	INTERNATIONAL JOURNAL OF FATIGUE
ISSN	0142-1123
卷号	175 页码:14
摘要	Hierarchical anisotropic nanostructured Mg-RE alloys, containing LPSO lamellae and dense nano-precipitates, exhibit superior mechanical properties. However, their reliability as structural materials for long-term service, especially in terms of fatigue, is still a matter of concern. Here, scattered oxide nodules are detected as a special kind of fatigue damage that assists crack initiation, rather than the typical slip-band structure. The LPSO lamellae and dense & beta;& PRIME; nano-precipitates lead to the high localization of fatigue damage. The fatigue-induced oxide nodules form and grow within the soft & alpha;-Mg layer, but their growth is limited by the adjacent strong LPSO lamellae, resulting in microcrack nucleation. Finally, clusters of microcracks along the LPSO/oxide interface converge to form the trans-granular crack initiation.
关键词	Magnesium alloy Gigacycle fatigue Fatigue crack initiation Fatigue damage Scattered oxide nodules
资助者	National Natural Science Foundation of China ; Natural Science Foundation of Sichuan Province ; JSPS KAKENHI ; Ultramicroscopy Research Center (URC) ; JSPS Fellowship
DOI	10.1016/j.ijfatigue.2023.107820
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation of China[12102280] ; National Natural Science Foundation of China[12172238] ; National Natural Science Foundation of China[12002226] ; Natural Science Foundation of Sichuan Province[2022NSFSC0337] ; JSPS KAKENHI[JP22K03828] ; Ultramicroscopy Research Center (URC) ; JSPS Fellowship[JP22F22720]
WOS研究方向	Engineering ; Materials Science
WOS类目	Engineering, Mechanical ; Materials Science, Multidisciplinary
WOS记录号	WOS:001048672300001
出版者	ELSEVIER SCI LTD
引用统计
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/178928
专题	中国科学院金属研究所
通讯作者	He, Chao; Wang, Qingyuan
作者单位	1.Sichuan Univ, Failure Mech & Engn Disaster Prevent Key Lab Sichu, Chengdu 610065, Peoples R China 2.Kyushu Univ, Dept Mech Engn, Fukuoka 8190395, Japan 3.Shanghai Jiao Tong Univ, Natl Engn Res Ctr Light Alloy Net Forming, Key State Lab Met Matrix Composites, Shanghai 200240, Peoples R China 4.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China 5.Chengdu Univ, Inst Adv Study, Chengdu 610106, Peoples R China
推荐引用方式 GB/T 7714	Chen, Yao,Shuai, Qi,Wu, Yujuan,et al. Oxide nodule assisting fatigue crack initiation in hierarchical anisotropic nanostructured Mg-RE alloy[J]. INTERNATIONAL JOURNAL OF FATIGUE,2023,175:14.
APA	Chen, Yao.,Shuai, Qi.,Wu, Yujuan.,Peng, Liming.,Shao, Xiaohong.,...&Chen, Qiang.(2023).Oxide nodule assisting fatigue crack initiation in hierarchical anisotropic nanostructured Mg-RE alloy.INTERNATIONAL JOURNAL OF FATIGUE,175,14.
MLA	Chen, Yao,et al."Oxide nodule assisting fatigue crack initiation in hierarchical anisotropic nanostructured Mg-RE alloy".INTERNATIONAL JOURNAL OF FATIGUE 175(2023):14.