Comparative studies on microstructures and properties of Cu-Ni-M alloys controlled by strong interaction between elements

doi:10.1016/j.jallcom.2019.07.073

CORC > 兰州理工大学 > 兰州理工大学

	Comparative studies on microstructures and properties of Cu-Ni-M alloys controlled by strong interaction between elements
	Li, Z. M.1; Li, X. N.1; Wang, C. Y.1; Zheng, Y. H.2; Yu, Q. X.1; Cheng, X. T.1; Li, N. J.1; Bi, L. X.1; Wang, Q.1; Dong, C.1
刊名	JOURNAL OF ALLOYS AND COMPOUNDS
	2019-10-15
卷号	805 页码:404-414
关键词	Copper alloy Microstructure Resistivity Heat resistance
ISSN号	0925-8388
DOI	10.1016/j.jallcom.2019.07.073
英文摘要	The heat resistance of copper alloys is desirable to improve while it services at high temperature as electrically and thermally conductive components. In present paper, the strengthening pattern of nickel-based superalloys is expected to be applied in copper alloys. Here the Cu50Ni37.5M12.5 (M = Al, Cr, Mo) alloys were prepared by vacuum arc melting and heat-treated in the corresponding conditions to obtain three different kinds of typical microstructure. The room temperature (RT) properties (hardness and resistivity) and high temperature properties (melting point, softening temperature and variable temperature resistivity) of the three alloys are contrasted and analyzed in detail. The Cu50Ni37.5Al12.5 alloy strengthened through the gamma' phase coherent precipitation shows the best conductivity and highest hardness (5.47 % IACS (International Annealed Copper Standard) and 310.1 HV). The splitting of the gamma' phase is contributing to hardening at high aging temperature. The resistivity-temperature behavior of the three alloys shows that the resistivity with rising temperature consists of the ideal lattice resistivity and the resistivity increment due to the defects. The Cu50Ni37.5Al12.5 alloy has the smallest room temperature resistivity and its resistivity maintains the lowest during the whole heating process (RT-1077K). Therefore, the coherent precipitated gamma' phase is expected to improve the heat resistance of the copper alloys while maintaining its electrical conductivity. (C) 2019 Elsevier B.V. All rights reserved.
资助项目	Fundamental Research Funds for the Central Universities[DUT17LAB09]
WOS研究方向	Chemistry ; Materials Science ; Metallurgy & Metallurgical Engineering
语种	英语
出版者	ELSEVIER SCIENCE SA
WOS记录号	WOS:000482184100044
状态	已发表
内容类型	期刊论文
源URL	[http://119.78.100.223/handle/2XXMBERH/31502]
专题	兰州理工大学省部共建有色金属先进加工与再利用国家重点实验室
通讯作者	Li, X. N.
作者单位	1.Dalian Univ Technol, Minist Educ, Key Lab Mat Modificat Laser Ion & Electron Beams, Dalian 116024, Peoples R China 2.Lanzhou Univ Technol, State Key Lab Adv Proc & Recycling Nonferrous Met, Lanzhou 730050, Gansu, Peoples R China
推荐引用方式 GB/T 7714	Li, Z. M.,Li, X. N.,Wang, C. Y.,et al. Comparative studies on microstructures and properties of Cu-Ni-M alloys controlled by strong interaction between elements[J]. JOURNAL OF ALLOYS AND COMPOUNDS,2019,805:404-414.
APA	Li, Z. M..,Li, X. N..,Wang, C. Y..,Zheng, Y. H..,Yu, Q. X..,...&Dong, C..(2019).Comparative studies on microstructures and properties of Cu-Ni-M alloys controlled by strong interaction between elements.JOURNAL OF ALLOYS AND COMPOUNDS,805,404-414.
MLA	Li, Z. M.,et al."Comparative studies on microstructures and properties of Cu-Ni-M alloys controlled by strong interaction between elements".JOURNAL OF ALLOYS AND COMPOUNDS 805(2019):404-414.