Effects of La Addition on Microstructure Evolution and Thermal Stability of Cu-2.35Ni-0.59Si Sheet

doi:10.3390/ma16114105

IMR OpenIR

	Effects of La Addition on Microstructure Evolution and Thermal Stability of Cu-2.35Ni-0.59Si Sheet
	Wang, Mingfei 1,2; Chen, Shuaifeng 3; Wang, Songwei 3; Zhang, Mengxiao 3; Song, Hongwu 3; Zhang, Shihong 1,3
通讯作者	Zhang, Shihong(shzhang@imr.ac.cn)
	2023-05-31
发表期刊	MATERIALS
卷号	16 期号:11 页码:14
摘要	A Cu-2.35Ni-0.69Si alloy with low La content was designed in order to study the role of La addition on microstructure evolution and comprehensive properties. The results indicate that the La element demonstrates a superior ability to combine with Ni and Si elements, via the formation of La-rich primary phases. Owing to existing La-rich primary phases, restricted grain growth was observed, due to the pinning effect during solid solution treatment. It was found that the activation energy of the Ni2Si phase precipitation decreased with the addition of La. Interestingly, the aggregation and distribution of the Ni2Si phase, around the La-rich phase, was observed during the aging process, owing to the attraction of Ni and Si atoms by the La-rich phase during the solid solution. Moreover, the mechanical and conductivity properties of aged alloy sheets suggest that the addition of the La element showed a slight reducing effect on the hardness and electrical conductivity. The decrease in hardness was due to the weakened dispersion and strengthening effect of the Ni2Si phase, while the decrease in electrical conductivity was due to the enhanced scattering of electrons by grain boundaries, caused by grain refinement. More notably, excellent thermal stabilities, including better softening resistance ability and microstructural stability, were detected for the low-La-alloyed Cu-Ni-Si sheet, owing to the delayed recrystallization and restricted grain growth caused by the La-rich phases.
关键词	Cu-Ni-Si Cu-2.35Ni-0.59Si alloy La-rich phase microstructure evolution precipitate behavior thermal stability
资助者	key research program of the Chinese Academy of Sciences (Shihong Zhang, China) ; Institute of Metal Research, Chinese Academy of Sciences
DOI	10.3390/ma16114105
收录类别	SCI
语种	英语
资助项目	key research program of the Chinese Academy of Sciences (Shihong Zhang, China)[ZDRW-CN-2021-3] ; Institute of Metal Research, Chinese Academy of Sciences[E055A501]
WOS研究方向	Chemistry ; Materials Science ; Metallurgy & Metallurgical Engineering ; Physics
WOS类目	Chemistry, Physical ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering ; Physics, Applied ; Physics, Condensed Matter
WOS记录号	WOS:001004984900001
出版者	MDPI
引用统计	被引频次：4[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/321006/178214
专题	中国科学院金属研究所
通讯作者	Zhang, Shihong
作者单位	1.Univ Sci & Technol China, Sch Rare Earths, 96 Jinzhai Rd, Hefei 230026, Peoples R China 2.Chinese Acad Sci, Ganjiang Innovat Acad, 1 Sci Acad Rd, Ganzhou 341119, Peoples R China 3.Chinese Acad Sci, Inst Met Res, Shi Changxu Adv Mat Innovat Ctr, 72 Wenhua Rd, Shenyang 110016, Peoples R China
推荐引用方式 GB/T 7714	Wang, Mingfei,Chen, Shuaifeng,Wang, Songwei,et al. Effects of La Addition on Microstructure Evolution and Thermal Stability of Cu-2.35Ni-0.59Si Sheet[J]. MATERIALS,2023,16(11):14.
APA	Wang, Mingfei,Chen, Shuaifeng,Wang, Songwei,Zhang, Mengxiao,Song, Hongwu,&Zhang, Shihong.(2023).Effects of La Addition on Microstructure Evolution and Thermal Stability of Cu-2.35Ni-0.59Si Sheet.MATERIALS,16(11),14.
MLA	Wang, Mingfei,et al."Effects of La Addition on Microstructure Evolution and Thermal Stability of Cu-2.35Ni-0.59Si Sheet".MATERIALS 16.11(2023):14.