Improvement in strength and electrical conductivity of Cu-Ni-Si alloys by aging and cold rolling
Improvement in strength and electrical conductivity of Cu-Ni-Si alloys by aging and cold rolling
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DOI：
10.1016/j.jallcom.2005.09.037
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发表时间：
2006-06-29
影响因子：
6.2
通讯作者：
Waseda, Y.
中科院分区：
文献类型：
--
作者：
Suzuki, S.;Shibutani, N.;Waseda, Y.
为了找到获得高强度、高导电性Cu-Ni-Si合金的最佳工艺条件，系统地研究了不同Cu-Ni-Si合金的显微维氏硬度和电阻率的室温时效特性。合金在固溶处理后进行等时或等温时效。研究了固溶处理后的冷轧工艺及合金成分对合金硬度和电阻率的影响。结果表明，对于获得高强度和高电导率，镍硅合金存在一个最佳成分比，固溶处理后冷轧可有效提高合金的强度和电导率。在铜基合金中加入少量的铁似乎可以改善上述性能。为实现高强度高导电性Cu-Ni-Si合金，提出了一种多步时效与冷轧耦合的工艺。根据所得结果，对冷轧合金中的析出机理进行了讨论。(c)2005 Elsevier B. V.保留所有权利。
In order to find the optimum conditions to obtain copper-nickel-silicon (Cu-Ni-Si) alloys with high strength and high electrical conductivity, the aging characteristics of micro-Vickers hardness and electrical resistivity of different Cu-Ni-Si alloys were systematically measured at room temperature. The alloys were isochronally or isothermally aged after solution treatment. The effects of cold rolling after solution treatment as well as the alloy composition on the hardness and resistivity were studied. The results show that there appears to be an optimum composition ratio of nickel to silicon for obtaining high strength and high electrical conductivity, and cold rolling after solution treatment is effective in increasing the strength and electrical conductivity. The addition of a small amount of iron to the copper base alloys appears to improve these above-mentioned properties. A multi-step aging process coupled with cold rolling was proposed for realizing Cu-Ni-Si alloys with high strength and high electrical conductivity. The mechanism of precipitation in cold-rolled alloys was discussed on the basis of the results obtained. (c) 2005 Elsevier B.V. All rights reserved.