La drives the remarkable strength enhancement of the Cu-Cr-Zr alloy through traditional thermo-mechanical treatment

doi:10.1016/j.matchar.2024.114488

IMR OpenIR

	La drives the remarkable strength enhancement of the Cu-Cr-Zr alloy through traditional thermo-mechanical treatment
	Xiao, Yu 1,2,3; Wang, Song-Wei 3; Song, Hong-Wu 3; Chen, Shuai-Feng 3; Yu, Qi 4; Zhang, Shi-Hong 2,3
通讯作者	Wang, Song-Wei(swwang16b@imr.ac.cn) ; Song, Hong-Wu(hwsong@imr.ac.cn)
	2024-12-01
发表期刊	MATERIALS CHARACTERIZATION
ISSN	1044-5803
卷号	218 页码:12
摘要	The Cu-1Cr-0.1Zr alloy with different La addition (0 %, 0.07 % and 0.14 wt%) was processed using industry suitable two-step cold rolling and aging treatment to achieve superior strength and electrical conductivity. The role of La addition on the microstructure evolution and comprehensive properties of the Cu-1Cr-0.1Zr alloy is investigated during the second rolling and subsequent aging stages. During pre-aging process, the presence of La in the Cu-1Cr-0.1Zr-0.07La alloy led to formation of smaller precipitate sizes compared to La-free Cu-1Cr-0.1Zr alloy. This facilitates a stronger cut interaction between dislocations and precipitates during secondary rolling process, which promotes the redissolution of precipitates into Cu matrix and thus results in a larger decline of 44.72 % ICAS for the electrical conductivity of Cu-1Cr-0.1Zr-0.07La alloy. After post-aging treatment, precipitates are newly formed with increased number and refined size of Cr precipitates with maintaining a coherent relationship with the matrix. Besides, the addition of La promotes Cr-rich phase precipitation and dislocation accumulation. Resultantly, remarkable increase in tensile strength by 11 % with the addition of 0.07wt%La. While, the 0.14La added alloy exhibits comprehensive properties of tensile strength 600 MPa and electrical conductivity 80.08 %IACS after aging at 440 degrees C for 180 min. The increase in strength was primarily attributed to precipitation strengthening and dislocation strengthening. This work provides new kinds of Cu-1Cr-0.1Zr alloy and industrial suitable thermo-mechanical treatment for fabricating high performance cooper alloy sheets.
关键词	Cu-1Cr-0.1Zr alloy La addition Precipitation behavior Mechanical properties Electrical conductivity
资助者	International Partnership Program of China Academy of Sciences ; Key Research and Development Program of Jiangxi Province
DOI	10.1016/j.matchar.2024.114488
收录类别	SCI
语种	英语
资助项目	International Partnership Program of China Academy of Sciences[172GJHZ2022054GC] ; Key Research and Development Program of Jiangxi Province[20203ABC28W004]
WOS研究方向	Materials Science ; Metallurgy & Metallurgical Engineering
WOS类目	Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering ; Materials Science, Characterization & Testing
WOS记录号	WOS:001346540300001
出版者	ELSEVIER SCIENCE INC
引用统计
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/191023
专题	中国科学院金属研究所
通讯作者	Wang, Song-Wei; Song, Hong-Wu
作者单位	1.Jiangxi Univ Sci & Technol, Fac Mat Met & Chem, Ganzhou 341000, Peoples R China 2.Chinese Acad Sci, Ganjiang Innovat Acad, Ganzhou 341000, Peoples R China 3.Chinese Acad Sci, Shi Changxu Innovat Ctr Adv Mat, Inst Met Res, Shenyang 110016, Peoples R China 4.Cent South Univ, Coll Mech & Elect Engn, Changsha 410083, Peoples R China
推荐引用方式 GB/T 7714	Xiao, Yu,Wang, Song-Wei,Song, Hong-Wu,et al. La drives the remarkable strength enhancement of the Cu-Cr-Zr alloy through traditional thermo-mechanical treatment[J]. MATERIALS CHARACTERIZATION,2024,218:12.
APA	Xiao, Yu,Wang, Song-Wei,Song, Hong-Wu,Chen, Shuai-Feng,Yu, Qi,&Zhang, Shi-Hong.(2024).La drives the remarkable strength enhancement of the Cu-Cr-Zr alloy through traditional thermo-mechanical treatment.MATERIALS CHARACTERIZATION,218,12.
MLA	Xiao, Yu,et al."La drives the remarkable strength enhancement of the Cu-Cr-Zr alloy through traditional thermo-mechanical treatment".MATERIALS CHARACTERIZATION 218(2024):12.