中國有色金屬學(xué)報(英文版)
Transactions of Nonferrous Metals Society of China
| Vol. 13 No. 5 October 2003 |
Microstructure and properties of Cu-15Ni-8Sn-0.4Si alloy
WANG Yan-hui(王艷輝), WANG Ming-pu(汪明樸),
HONG Bin（洪 斌）, LI Zhou(李 周)
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
