- Microstructure and Tensile Properties of Spray Cast Cu-Sn-Ni-Si Alloy
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Hee-Soo Kang, Eon-Sik Lee, Gyu-Chang Lee, Kyeong-Ho Baik
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J Korean Powder Metall Inst. 2010;17(6):470-476.
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DOI: https://doi.org/10.4150/KPMI.2010.17.6.470
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 Abstract
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- In this study, Cu-10Sn and Cu-10Sn-2Ni-0.2Si alloys have been manufactured by spray casting in order to achieve a fine scale microstructure and high tensile strength, and investigated in terms of microstructural evolution, aging characteristics and tensile properties. Spray cast alloys had a much lower microhardness than continuous cast billet because of an improved homogenization and an extended Sn solid solubility. Spray cast Cu-Sn-Ni-Si alloy was characterized by an equiaxed grain microstructure with a small-sized (Ni, Si)-rich precipitates. Cold rolling of Cu-Sn-Ni-Si alloy increased a tensile strength to 1220 MPa, but subsequent ageing treatment reduced a ultimate tensile strength to 780 MPa with an elongation of 18%.
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