Corrosion behavior of novel Cu-Ni-Al-Si alloy with super-high strength in 3.5% NaCl solution

作     者：Jia-jun ZHU San-hua LI Lei-nuo SHEN Wu-lin YANG Zhou LI 朱家俊;黎三华;申镭诺;杨武霖;李周

作者机构：College of Materials Science and Engineering Hunan University Changsha 410082 China Hunan Province Key Laboratory for Spray Deposition Technology and ApplicationHunan University Changsha 410082 China School of Materials Science and Engineering Central South University Changsha 410083 China 

出 版 物：《Transactions of Nonferrous Metals Society of China》 (中国有色金属学报（英文版）)

年 卷 期：2017年第27卷第5期

页      面：1096-1104页

核心收录：

学科分类：080503[工学-材料加工工程] 08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 

基　　金：Project(51271203)supported by the National Natural Science Foundation of China 

主　　题：Cu-Ni-Al-Si alloy Ni2Si precipitate corrosion behavior average annual corrosion rate corrosion product 

摘      要：A novel Cu?6.5Ni?1Al?1Si?0.15Mg?0.15Ce alloy with super-high strength was designed and its corrosion behavior in3.5%NaCl solution at25°C was investigated by the means of SEM observation,TEM observation and XPS *** alloy after solution treatment,80%cold rolling and aging at450°C for1h had the best comprehensive properties with hardness of HV314,electrical conductivity of19.4%IACS,tensile strength of1017MPa,and average annual corrosion rate of0.028mm/*** oxides and chloride products formed at first,followed by the formation of dyroxides *** alloy showed super-high strength,good electrical conductivity and corrosion resistant because Ni2Si hindered the precipitation of large NiAl at the grain boundary and the denickelefication of the alloy.