| 廖钰敏,刘东辉,邓丽华.Cu-9.5Ni-2.3Sn-0.15Si合金组织与性能研究[J].有色金属材料与工程,2014,35(1):15-19. |
| Cu-9.5Ni-2.3Sn-0.15Si合金组织与性能研究 |
| Study of Structure and Properties of Cu-9.5Ni-2.3Sn-0.15Si Alloy |
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| DOI： |
| 中文关键词: Cu-9.5Ni-2.3Sn-0.15Si合金 显微组织 电导率 硬度 时效处理 |
| 英文关键词:Cu-9.5Ni-2.3Sn-0.15Si alloy microstructure conductivity hardness aging |
| 基金项目:江西省自然基金资助项目（No.2009GZC0048）；江西省钨铜重点实验室开放基金资助项目（No.2010-WT-03） |
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| 中文摘要: |
| 研究了在Cu-9.5Ni-2.3Sn合金中添加质量分数为0.15%的Si后对该合金铸态及时效态微观组织、电导率和硬度的影响.结果表明：添加0.15%的Si后，合金出现发达的树枝状晶体，且有Ni2Si、Ni3Si、Ni3Sn和Ni4Sn相出现.经400℃×4 h时效处理后，Ni2Si、Ni3Si相的析出使得合金得到强化.合金电导率随时效时间的延长和温度的提高而升高，硬度在时效初期随时效温度的提高和时效时间的延长而提高，在430℃时效2 h和在400℃时效8 h得到峰值，较佳时效工艺为400℃×8 h. |
| 英文摘要: |
| Experiments were made by adding 0.15(wt%) Si into the Cu-9.5Ni-2.3Sn Alloy to see its influence to the microstructures of as-cast and after aged, conductivity, and hardness as well.The results show that dendrite structure appears obviously and phases of Ni2Si, Ni3Si, Ni3Sn, Ni4Sn appear in as-cast structure.Cu-9.5Ni-2.3Sn-0.15Si Alloy will be strengthened because of the formation of Ni2Si and Ni3Si new phases after it being aged at 400℃×4 h.The conductivity is increased after aged with ageing time extended and temperature increased.Peak value of hardness is achieved when aging temperature is 430℃(aging time 2 h) and when aging time is 8h(aging temperature 400℃).Therefore the best aging treatment recommended is 400℃×8 h. |
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