Study on stress relaxation behavior and mechanism of typical high strength and elasticity copper alloy

doi:10.1016/j.mtcomm.2025.112077

IMR OpenIR

	Study on stress relaxation behavior and mechanism of typical high strength and elasticity copper alloy
	Zhang, Mengxiao 1,2; Song, Hongwu 1; Guo, Wei 3; Cheng, Ming 1; Xu, Yong 1; Jia, Yan 3; Zhang, Yanyan 1; Lin, Haoran 1; Zhang, Shihong 1
通讯作者	Song, Hongwu(hwsong@imr.ac.cn) ; Cheng, Ming(mcheng@imr.ac.cn)
	2025-03-01
发表期刊	MATERIALS TODAY COMMUNICATIONS
卷号	44 页码:11
摘要	Stress relaxation performance is an important mechanical property of high-strength and high-elasticity copper alloys. This work selects Cu-3Ti and Cu-15Ni-8Sn alloys with good application prospects and regulates their mechanical properties through heat treatment. By combining numerical simulation and TEM analysis, stress relaxation studies under tensile and bending loads were conducted at different temperatures. The results show that as the temperature increases, the stress relaxation rate significantly accelerates, and Cu-3Ti alloy has better stress relaxation resistance. Precipitation strengthening is the main mechanism of its stress relaxation performance, while the discontinuous precipitation phase leads to a higher stress relaxation rate in Cu-15Ni-8Sn alloy at high temperature. Compared to the most widely used high-strength and high elasticity Cu-Be alloy, the advantage of stress relaxation performance of Cu-3Ti alloy is more obvious at high temperatures. Meanwhile, in response to the differences in stress relaxation performance under different load forms, considering the service load characteristics of high-strength and high elasticity copper alloy components, a stress relaxation behavior prediction model based on tensile stress relaxation load which can be used to predict the stress relaxation behavior under different load forms was constructed through numerical simulation.
关键词	Cu-3Ti Cu-15Ni-8Sn Stress relaxation Microstructure Precipitate phase
资助者	National Nature Science Foundation of China (NSCF) ; Foreign Expert Program of the Ministry of Science and Technology ; Sci-ence and Technology Research Projects of Sichuan Province
DOI	10.1016/j.mtcomm.2025.112077
收录类别	SCI
语种	英语
资助项目	National Nature Science Foundation of China (NSCF)[52201148] ; Foreign Expert Program of the Ministry of Science and Technology[G2023203001L] ; Sci-ence and Technology Research Projects of Sichuan Province[2023ZYD0135]
WOS研究方向	Materials Science
WOS类目	Materials Science, Multidisciplinary
WOS记录号	WOS:001439474500001
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/321006/179855
专题	中国科学院金属研究所
通讯作者	Song, Hongwu; Cheng, Ming
作者单位	1.Chinese Acad Sci, Inst Met Res, Shi Changxu Innovat Ctr Adv Mat, Shenyang, Peoples R China 2.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang, Peoples R China 3.Shenyang Ligong Univ, Sch Automot & transportat, Shenyang, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Mengxiao,Song, Hongwu,Guo, Wei,et al. Study on stress relaxation behavior and mechanism of typical high strength and elasticity copper alloy[J]. MATERIALS TODAY COMMUNICATIONS,2025,44:11.
APA	Zhang, Mengxiao.,Song, Hongwu.,Guo, Wei.,Cheng, Ming.,Xu, Yong.,...&Zhang, Shihong.(2025).Study on stress relaxation behavior and mechanism of typical high strength and elasticity copper alloy.MATERIALS TODAY COMMUNICATIONS,44,11.
MLA	Zhang, Mengxiao,et al."Study on stress relaxation behavior and mechanism of typical high strength and elasticity copper alloy".MATERIALS TODAY COMMUNICATIONS 44(2025):11.