Modificated microstructure and enhanced mechanical properties of Cu-Sn-P alloy with rare earth La addition

doi:10.1016/j.mtcomm.2024.109304

IMR OpenIR

	Modificated microstructure and enhanced mechanical properties of Cu-Sn-P alloy with rare earth La addition
	Wang, Songwei 1; Yu, Kangkang 2; Chen, Shuaifeng 1; Deng, Siying 1; Song, Hongwu 1; Zhang, Shihong 1
通讯作者	Song, Hongwu(hwsong@imr.ac.cn) ; Zhang, Shihong(shzhang@imr.ac.cn)
	2024-06-01
发表期刊	MATERIALS TODAY COMMUNICATIONS
卷号	39 页码:10
摘要	Rare earths are often added to copper alloys as trace alloying elements to modify the structure and improve related properties. In this study, the Cu-7.8Sn-0.16 P and Cu-7.8Sn-0.16 P-0.15La alloy strips were fabricated through full-chain process of vacuum casting, cold rolling, intermediate annealing, cold rolling and low temperature annealing process. Then, the distinctive microstructure features and mechanical properties of Cu-7.8Sn0.16 P and Cu-7.8Sn-0.16 P-0.15La alloys were comprehensively analyzed in special view of rare earth affected phase types and property evolution. The results indicate that the addition 0.15 wt% La has effectively refined the dendrite segregation and dispersed the microporosity. Specifically, La combines with P and form a stable and dispersed micron sized LaP2 intermetallic compound, which replaces the low melting point (alpha+6+Cu3P) ternary phase in the La-free alloy. Furthermore, a new nanoscale La(Cu2P)2 precipitated phase is characterized in the Cu7.8Sn-0.16 P-0.15La alloy during low-temperature annealing process. As well, the tensile strength of Cu-7.8Sn0.16 P-0.15La strips display notable increase to 915 MPa from 834 MPa of Cu-7.8Sn-0.16 P after low-temperature annealing. Such increase in tensile strength is attributed to the formation of La-containing phase of varied sizes in the Cu-7.8Sn-0.16 P-0.15La alloy, where the nano scale La(Cu2P)2 precipitated phase makes the most significant contribution.
关键词	Cu-Sn-P alloy La microalloying Microstrcuture features Mechanical properties Strengthening mechanism
DOI	10.1016/j.mtcomm.2024.109304
收录类别	SCI
语种	英语
WOS研究方向	Materials Science
WOS类目	Materials Science, Multidisciplinary
WOS记录号	WOS:001246636400001
出版者	ELSEVIER
引用统计	被引频次：1[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/321006/187015
专题	中国科学院金属研究所
通讯作者	Song, Hongwu; Zhang, Shihong
作者单位	1.Chinese Acad Sci, Inst Met Res, Shi Changxu Innovat Ctr Adv Mat, Shenyang 110016, Liaoning, Peoples R China 2.Putian Iron Core Co Ltd, Wuxi 214104, Jiangsu, Peoples R China
推荐引用方式 GB/T 7714	Wang, Songwei,Yu, Kangkang,Chen, Shuaifeng,et al. Modificated microstructure and enhanced mechanical properties of Cu-Sn-P alloy with rare earth La addition[J]. MATERIALS TODAY COMMUNICATIONS,2024,39:10.
APA	Wang, Songwei,Yu, Kangkang,Chen, Shuaifeng,Deng, Siying,Song, Hongwu,&Zhang, Shihong.(2024).Modificated microstructure and enhanced mechanical properties of Cu-Sn-P alloy with rare earth La addition.MATERIALS TODAY COMMUNICATIONS,39,10.
MLA	Wang, Songwei,et al."Modificated microstructure and enhanced mechanical properties of Cu-Sn-P alloy with rare earth La addition".MATERIALS TODAY COMMUNICATIONS 39(2024):10.