Microstructure and properties of Cu-15Ni-8Sn-0.4Si alloy

ISSN: 1003-6326
CN: 43-1239/TG
CODEN: TNMCEW

Vol. 13 No. 5 October 2003

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WANG Yan-hui(王艳辉), WANG Ming-pu(汪明朴),
HONG Bin（洪斌）, LI Zhou(李周)

(School of Material Science and Engineering,
Central South University,Changsha 410083, China)

Abstract: By metallographic test, SEM, TEM and energy spectrum, the microstructure and properties of Cu-15Ni-8Sn-0.4Si alloy were studied. The results show that the added-Si combines with Ni and forms Ni₃Si and Ni₂Si phases. During ageing at 380℃, the precipitation of Ni₂Si phase suppresses discontinuous precipitation to some degree. After adding Si, the conductivity and hardness of Cu-15Ni-8Sn alloy are increased to some degree.

Key words: Cu-15Ni-8Sn-0.4Si alloy; spinodal decomposition; cast structure; discontinuous precipitation; Ni₂Si

Superintended by The China Association for Science and Technology (CAST)
Sponsored by The Nonferrous Metals Society of China (NFSOC)
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