Research on very high cycle fatigue behavior of pure copper

doi:10.1016/j.mtcomm.2025.112109

IMR OpenIR

	Research on very high cycle fatigue behavior of pure copper
	Yue, Fengli 1; Jia, Yan 1; Zhang, Mengxiao 2,3; Song, Hongwu 2; Zhang, Shihong 2; Guo, Wei 1; Zhang, Zhefeng 2; Pang, Jianchao 2
通讯作者	Zhang, Mengxiao(mxzhang@imr.ac.cn) ; Pang, Jianchao(jcpang@imr.ac.cn)
	2025-03-01
发表期刊	MATERIALS TODAY COMMUNICATIONS
卷号	44 页码:9
摘要	Very high cycle fatigue performance is an important mechanical performance indicator for copper in service. This paper studies the very high cycle fatigue performance, fracture surface morphology, and dislocation evolution of cold drawn and annealed copper. The results indicate that the dislocation density of cold drawn copper is high, and dislocation configurations are formed during very high cycle fatigue, resulting in fatigue softening and a decrease in fatigue strength. During the annealing process, copper undergoes recrystallization and twinning boundaries, resulting in a decrease in density. Low density of dislocations provide cyclic hardening ability for fatigue processes, increasing tensile strength. The cold drawn fatigue fracture surface is rough, with a short crack propagation zone, while the annealed fatigue crack source zone is clear and the crack propagation zone is flat. In order to gain a deeper understanding of the impact of defects on the fatigue strength of copper, this paper constructs a defect based fatigue strength prediction and correction model. The model parameters are adjusted based on the characteristics of copper, and the results show that the correction model has high accuracy and can accurately predict the fatigue limit of copper.
关键词	Copper Very high cycle fatigue Dislocation structure Fatigue mechanism
资助者	National Natural Science Foundation of China (NSFC)
DOI	10.1016/j.mtcomm.2025.112109
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation of China (NSFC)[52201148]
WOS研究方向	Materials Science
WOS类目	Materials Science, Multidisciplinary
WOS记录号	WOS:001441823900001
出版者	ELSEVIER
引用统计
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/179718
专题	中国科学院金属研究所
通讯作者	Zhang, Mengxiao; Pang, Jianchao
作者单位	1.Shenyang Ligong Univ, Sch Automot & transportat, Shenyang, Peoples R China 2.Chinese Acad Sci, Shi Changxu Innovat Ctr Adv Mat, Inst Met Res, Shenyang 110016, Peoples R China 3.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Peoples R China
推荐引用方式 GB/T 7714	Yue, Fengli,Jia, Yan,Zhang, Mengxiao,et al. Research on very high cycle fatigue behavior of pure copper[J]. MATERIALS TODAY COMMUNICATIONS,2025,44:9.
APA	Yue, Fengli.,Jia, Yan.,Zhang, Mengxiao.,Song, Hongwu.,Zhang, Shihong.,...&Pang, Jianchao.(2025).Research on very high cycle fatigue behavior of pure copper.MATERIALS TODAY COMMUNICATIONS,44,9.
MLA	Yue, Fengli,et al."Research on very high cycle fatigue behavior of pure copper".MATERIALS TODAY COMMUNICATIONS 44(2025):9.