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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
2019-10-15
发表期刊JOURNAL OF ALLOYS AND COMPOUNDS
ISSN0925-8388
卷号805页码:404-414
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.
关键词Copper alloy Microstructure Resistivity Heat resistance
DOI10.1016/j.jallcom.2019.07.073
收录类别SCI
语种英语
资助项目Fundamental Research Funds for the Central Universities[DUT17LAB09]
WOS研究方向Chemistry ; Materials Science ; Metallurgy & Metallurgical Engineering
WOS类目Chemistry, Physical ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS记录号WOS:000482184100044
出版者ELSEVIER SCIENCE SA
引用统计
被引频次:11[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符https://ir.lut.edu.cn/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
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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.
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