Enthalpic interaction promotes the stability of high elastic Cu-Ni-Sn alloys

doi:10.1016/j.jallcom.2021.163068

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	Enthalpic interaction promotes the stability of high elastic Cu-Ni-Sn alloys
	Li, Z. M.1; Cheng, Z. L.1; Li, X. N.1; Hu, Y. L.1; Li, N. J.1; Zheng, Y. H.3; Shao, Y. Y.1; Liu, R. W.2; Dong, C.1
刊名	JOURNAL OF ALLOYS AND COMPOUNDS
	2022-03-10
卷号	896
关键词	Cu-Ni-Sn alloy Cluster-plus-glue-atom mode Enthalpic interaction Stability
ISSN号	0925-8388
DOI	10.1016/j.jallcom.2021.163068
英文摘要	Enthalpic interaction between the elements determines the stability of the local structures in the alloy system. Multicomponent synergistic effect is expected to improve the thermal stability and the relevant properties by regulating the enthalpic interaction. In this work, the composition of Cu-Ni-Sn alloys is explained by introducing the cluster-plus-glue-atom mode, and the strong and weak enthalpic interaction elements Si and Zn, respectively, are chosen for multi-componentization of Cu-Ni-Sn alloys. The results demonstrate that the synergistic effect of Zn and Si improves the stability of both the Cu matrix and D0(22) or L1(2-gamma') phase, inhibits the discontinuous precipitation effectively and gains a notable higher strength-over resistivity ratio (H-R / rho(R)) than the Cu-15Ni-8Sn (wt. %) (C72900) alloy. After adding Si and Zn, the reinforcing enthalpic interaction between the elements is the crucial factor for the stability enhancement of the alloys, and it is embodied by two aspects: (a) the reducing elastic strain energy in the solution treated alloys; (b) the more homogeneous surface potential and the higher work function in the age treated alloys. Additionally, Compared with the Cu80Ni15Sn5 alloy that based on the ideal cluster formula, the Cu79.68Ni15.63Sn4.69 alloy, based on the modified cluster formula: {[Cu-CuxNi12-x]Cu-3}(alpha){[Sn-NiyCu12-y]Sn-3}(16-a), possesses a preferable thermal stability whatever solution treated or age treated state, and exhibits a decreasing amount of discontinuous precipitation although has a slightly lower H-R / rho(R), which is beneficial to the improvement of the workability of the alloys. The modified cluster formula is more suitable for the compositional design of Cu-Ni-Sn alloys. The work provides an effective theoretical and experimental basis for the composition design of high stability Cu-Ni-Sn alloys. (C) 2021 Elsevier B.V. All rights reserved.
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:000750102500002
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/154774]
专题	兰州理工大学
作者单位	1.Dalian Univ Technol, Key Lab Mat Modificat Laser Ion & Electron Beams, Minist Educ, Dalian 116024, Peoples R China; 2.Shimadzu China Co LTD, Shanghai 200233, Peoples R China 3.Lanzhou Univ Technol, State Key Lab Adv Proc & Recycling Nonferrous Met, Lanzhou 730050, Peoples R China;
推荐引用方式 GB/T 7714	Li, Z. M.,Cheng, Z. L.,Li, X. N.,et al. Enthalpic interaction promotes the stability of high elastic Cu-Ni-Sn alloys[J]. JOURNAL OF ALLOYS AND COMPOUNDS,2022,896.
APA	Li, Z. M..,Cheng, Z. L..,Li, X. N..,Hu, Y. L..,Li, N. J..,...&Dong, C..(2022).Enthalpic interaction promotes the stability of high elastic Cu-Ni-Sn alloys.JOURNAL OF ALLOYS AND COMPOUNDS,896.
MLA	Li, Z. M.,et al."Enthalpic interaction promotes the stability of high elastic Cu-Ni-Sn alloys".JOURNAL OF ALLOYS AND COMPOUNDS 896(2022).