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铜业工程:2022(2):13-17
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添加Ag对Cu-15Ni-8Sn 合金组织及性能的影响
乐顺聪1, 黄剑2, 郭诚君3, 章文槐1, 胡延波1, 胡春晖1
(1.江西铜业股份有限公司加工事业部，江西 南昌 330096;2.江西先进铜产业研究院，江西 鹰潭 335000;3.江西理工大学材料科学与工程学院，江西 赣州 341000)
The effect of Ag Addition on the Microstructures and Properties of Cu-15Ni-8Sn Alloy
LE Shun-cong1, HUANG Jian2, GUO Cheng-jun3, ZHANG Wen-huai1, HU Yan-bo1, HU Chun-hui2
(1.JCC Processing Business Division, Nanchang 330096, Jiangxi, China;2.Jiangxi Advanced Copper Industry Research Institute, Yingtan 335000, Jiangxi, China;3.Faculty of Materials Metallurgy and Chemistry, Jiangxi University of Science and Technology, Ganzhou 341000, Jiangxi, China)
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投稿时间：2021-10-08    
中文摘要: 通过对不同Ag含量的Cu-15Ni-8Sn合金铸态、固溶态和时效态的微观组织进行分析，研究了Ag添加对 Cu-15Ni-8Sn 合金组织及性能的影响。结果表明，适量Ag元素的添加能够减少铸态Cu-15Ni-8Sn合金 的枝晶间距，抑制显微偏析，改善合金的铸态组织。此外，当Ag含量为0.2 wt.%~ 0.5 wt.% 时，可有效抑制时效过程中不连续沉淀相的析出，从而改善合金的力学性能。但是，当Ag添加量大于等于0.5 wt.% 时，对不连续沉淀的抑制效果减弱。
中文关键词: Ag含量  枝晶间距  显微偏析  力学性能
Abstract:The effect of Ag addition on the microstructures and properties of Cu-15Ni-8Sn alloy was studied by analyzing microstructures of the as-cast, solid-solution and aging treatment of alloys. The results showed that the addition of Ag can reduce the dendrite spacing in the as-cast Cu-15Ni-8Sn alloy, and then inhibite the micro-segregation and improve the as-cast structure of the alloy. In addition, when the Ag content was 0.2 wt.% ~ 0.5 wt.%, the precipitation of discontinuous precipitates during the aging process can be significantly suppressed, thereby improving the mechanical properties of the alloy. However, when the addition amount of Ag is greater than or equal to 0.5 wt.%, the inhibitory effect on discontinuous precipitation is weakened.
keywords: Ag content  Cu-15Ni-8Sn  dendrite spacing  micro-segregation  mechanical property
文章编号：20220203     中图分类号：TG146
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引用文本： 乐顺聪,黄剑,郭诚君,章文槐,胡延波,胡春晖.添加Ag对Cu-15Ni-8Sn 合金组织及性能的影响[J].铜业工程,2022,(2):13-17