Microstructure of Casting and Solid Solution of Cu-7.5Ni-5.0Sn Alloy


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The casting and solution microstructure of Cu-7.5Ni-5.0Sn alloy were studied.The results showed that the cast Cu-7.5Ni-5.0Sn alloy existed serious dendritic. The microstructure of the cast Cu-7.5Ni-5.0Sn alloy is divided into three parts, namely, gray dendritic (α phase, ie, Cu-Ni solid solution), interdendritic white bright objects or bone-like organization ((CuX、Ni1-X)3Sn phase, ie, γ phase), dark gray organization of the transition between the dendrite and the bone-like organization (α phase and γ phase mixture). Solution temperature will affect the solid solution effects. The best solution condition is heated at 800°C for 1h. Subsequently, the alloy cold rolling deformation is up to 50%.



Advanced Materials Research (Volumes 581-582)

Edited by:

Jimmy (C.M.) Kao, Wen-Pei Sung and Ran Chen




R. Q. Liu et al., "Microstructure of Casting and Solid Solution of Cu-7.5Ni-5.0Sn Alloy", Advanced Materials Research, Vols. 581-582, pp. 436-439, 2012

Online since:

October 2012




[1] B. Q. Lefevre, A. T. Dannessa, D. Kalish, Age Hardening in Cu-15Ni-8Sn Alloy, J. Metallurgical Transactions, 9 (1978) 577-586.

DOI: https://doi.org/10.1007/bf02646415

[2] J. C. Zhao and M. R. Notis, Spinodal decomposition, ordering transformation, and discontinuous precipitation in a Cu-15Ni-8Sn alloy, J. Acta Mater Inc, 46 (1998) 4203-4218.

DOI: https://doi.org/10.1016/s1359-6454(98)00095-0

[3] Ji-cheng Zhao and Michael R. Notis, Microstructure and precipitation kinetics in a Cu-7. 5Ni-5. 0Sn alloy, J. Microstructure and Precipitation Kinetics, 19 (1998) 1509-1516.

DOI: https://doi.org/10.1016/s1359-6462(98)00341-8

[4] Wei Cai, Li-jun Peng, Cong-you Xie, Cu-10Ni-4. 5Sn microstructure, properties and annealing process , J. Special Casting & Nonferrous Alloys, 30 (2010) 559-561.

[5] K. P. Gupta, An expanded Cu-Ni-Sn system (copper-nickel-sn), J. Phase Equilibria, 2l (2000) 479-484.

DOI: https://doi.org/10.1361/105497100770339752

[6] S. Spooner and B. G Lefevre, The effect of prior deformation on spinodal age hardening in Cu -15Ni-8Sn alloy, J. Metal Trans. 11 (1980) 1085-1093.

DOI: https://doi.org/10.1007/bf02668132

[7] Chen-hou Xiao, Jing-san Liu and Zhe Li, Copper nickel tin framework material process capability study, J. Nonferrous Mineral Impurities, 1 (2001) 37-40.

[8] Han-qi Hu, Principle of metal solidification, China Machine Press, Beijing, (1991).

[9] Zhen-xia Li, World nonferrous metal material composition and Performance Manual, Metallurgical Industry Press, Beijing, (1992).

[10] Shao-zong Zhang, Bai-hong Jiang, Wen-jiang Ding, Casting of Cu-15Ni-8Sn alloy microstructure mechanical properties, J. Special Casting & Nonferrous Alloys 26 (2006) 669-672.

DOI: https://doi.org/10.1016/j.wear.2007.03.003

[11] Wei Cai, Li-jun Peng, Xin Ren, Research on solution and aging of Cu-10Ni-4. 5Sn elastic alloy and microstructure and properties, J. Chinese Journal of Rare Metals, 34 (2010) 529-533.