Inhibition of precipitation structure transformation and enhancement of hardness by trace La addition in Cu-1Cr-0.1Zr alloy sheets

doi:10.1016/j.mtcomm.2024.108413

IMR OpenIR

	Inhibition of precipitation structure transformation and enhancement of hardness by trace La addition in Cu-1Cr-0.1Zr alloy sheets
	Xiao, Yu 1,2; Wang, Song-Wei 3; Song, Hong-Wu 3; Chen, Shuai-Feng 3; Yu, Qi 4; Zhang, Shi-Hong 2,3
通讯作者	Song, Hong-Wu(hwsong@imr.ac.cn)
	2024-03-01
发表期刊	MATERIALS TODAY COMMUNICATIONS
卷号	38 页码:9
摘要	Cu-1Cr-0.1Zr and Cu-1Cr-0.1Zr-0.07La alloy sheets were prepared by the following process: vacuum casting- homogenization treatment- hot forging- solid solution treatment- cold rolling- aging treatment. The effect of trace La on the aging behavior and mechanical properties of Cu-1Cr-0.1Zr alloy was investigated. Compared to the Cu-1Cr-0.1Zr (0La) alloy, the Cu-1Cr-0.1Zr-0.07La (0.07La) alloy exhibited a significant increase in hardness and a slight decrease in electrical conductivity due to larger number of finer and coherent f.c.c Cr-rich precipitates. It was found that trace La can affects the evolution of precipitation phases. The thermodynamics calculation indicates that with La addition, the Cr-rich precipitates were much more inclined to nucleate with f.c. c structure, and the precipitation growth kinetics results indicate that the addition of La can reduce the activation energy of precipitation, promote the precipitation of f.c.c Cr phase and form Cr-poor zones, making it more difficult to form bcc nuclei. Thus, the transformation of nanoscale Cr-rich precipitates from f.c.c structure to bcc structure was inhibited due to trace La addition, causing higher hardness with appropriate conductivity.
关键词	Cu-1Cr-0.1Zr alloy La Precipitation Thermodynamics calculation
资助者	International Partnership Program of China Academy of Sciences ; Key Research and Development Program of Jiangxi Province
DOI	10.1016/j.mtcomm.2024.108413
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
WOS类目	Materials Science, Multidisciplinary
WOS记录号	WOS:001195126100001
出版者	ELSEVIER
引用统计	被引频次：5[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/321006/185256
专题	中国科学院金属研究所
通讯作者	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. Inhibition of precipitation structure transformation and enhancement of hardness by trace La addition in Cu-1Cr-0.1Zr alloy sheets[J]. MATERIALS TODAY COMMUNICATIONS,2024,38:9.
APA	Xiao, Yu,Wang, Song-Wei,Song, Hong-Wu,Chen, Shuai-Feng,Yu, Qi,&Zhang, Shi-Hong.(2024).Inhibition of precipitation structure transformation and enhancement of hardness by trace La addition in Cu-1Cr-0.1Zr alloy sheets.MATERIALS TODAY COMMUNICATIONS,38,9.
MLA	Xiao, Yu,et al."Inhibition of precipitation structure transformation and enhancement of hardness by trace La addition in Cu-1Cr-0.1Zr alloy sheets".MATERIALS TODAY COMMUNICATIONS 38(2024):9.