Effect of heat treatment on the highly corrosion-resistant Cu70Ni27.7Fe2.3 alloy

Effect of heat treatment on the highly corrosion-resistant Cu70Ni27.7Fe2.3 alloy
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热处理对高耐蚀Cu70Ni27.7Fe2.3合金的影响

DOI:
10.1016/j.jallcom.2010.06.148
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发表时间:
2010-09
影响因子:
6.2
通讯作者:
Dong Chuang
Dong Chuang
中科院分区:
材料科学2区
文献类型:
--
作者:
Zhang Jie;Wang Qing;Wang Yingmin;Wen Lishi;Dong Chuang

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为了提高铜镍合金的耐蚀性,广泛添加少量铁。本文旨在优化Cu70(Ni,Fe)30(at)中Fe的含量。%)合金采用团簇+胶原子模型稳定固溶体。该模型假设1个Fe原子和12个Ni原子形成一个以Fe为中心、Ni为包围的立方体八面体簇,孤立的feni12簇嵌入Cu基体中。用簇式[Fe1Ni12]Cu30.3=Cu70Ni27.7Fe2.3(at.%)描述了fe改性cu70ni30合金的稳定固溶合金成分。通过XRD、TEM和电化学腐蚀测试研究了均匀化退火处理对合金微观组织和耐蚀性的影响。腐蚀试验表明,800℃退火5h的cu70ni27.7 fe2.3合金在3.5% NaCl溶液中具有最佳的耐蚀性。
Minor Fe additions are widely added to enhance the corrosion resistance of cupronickel alloys. The present paper aims at optimizing the amounts of Fe in Cu70(Ni,Fe)30(at.%) alloys using a cluster-plus-glue-atom model for stable solid solutions. By this model, it is assumed that one Fe atom and 12 Ni atoms formed a Fe-centered and Ni-surrounded cube-octahedron cluster and the isolated FeNi12clusters embedded in a Cu matrix. The stable solid solution alloy composition of Fe-modified Cu70Ni30alloy was described by a cluster formula [Fe1Ni12]Cu30.3=Cu70Ni27.7Fe2.3(at.%). The effect of homogenizing annealing treatment on the microstructure and corrosion resistance was also investigated by XRD, TEM and electrochemical corrosion measurements. The corrosion test indicates that the Cu70Ni27.7Fe2.3alloy annealed at 800°C for 5h possesses the best corrosion resistance in 3.5% NaCl solution.
DOI: 10.1016/0010-938x(73)90007-3
发表时间: 1973-01-01
期刊: CORROSION SCIENCE
影响因子: 8.3
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