| Cu-9.5Ni-2.3Sn-0.15Si合金组织与性能研究 |
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| 引用本文： | 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].上海有色金属,2014(1):15-19. |
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| 作者姓名： | 廖钰敏 刘东辉 邓丽华 |
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| 作者单位： | 江西理工大学材料科学与工程学院;赣州逸豪优美科实业有限公司; |
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| 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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| 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Ni_2Si、Ni_3Si、Ni_3Sn和Ni_4Sn相出现.经400℃×4 h时效处理后,Ni_2Si、Ni_3Si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.
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| 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 |
Study of Structure and Properties of Cu-9. 5Ni-2. 3Sn-0. 15Si Alloy |
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| LIAO Yu-min,LIU Dong-hui,DENG Li-hua.Study of Structure and Properties of Cu-9. 5Ni-2. 3Sn-0. 15Si Alloy[J].Shanghai Nonferrous Metals,2014(1):15-19. |
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| Authors: | LIAO Yu-min LIU Dong-hui DENG Li-hua |
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| Affiliation: | 1 Materials and Chemistry Engineering Faculty, Jiangxi University of Science and Technology, Ganzhou 341000, China; 2. Ganzhou Yihao Umicore Industries Co., Ltd ., Ganzhou 341000, China) |
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| Abstract: | 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, NhSn appear in as-cast structure. Cu-9.5Ni-2.3Sn-0.15Si Alloy will be strengthened because of the formation of Ni2 Si and Ni3 Si new phases after it being aged at 400 ~C ~ 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 Bh（aging temperature 400 ℃ ）. Therefore the best aging treatment recommended is 400 ℃× 8 h. |
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| Keywords: | Cu-9 5Ni-2 3Sn-0 15Si alloy microstructure conductivity hardness aging |
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