摘要
利用光学显微镜、透射电镜、全浸测试和电化学测试等研究了固溶和时效处理对Cu-6.9Ni-2.97Al-0.99Fe-1.06Mn合金组织和腐蚀性能的影响。结果表明:铸态合金组织主要由α-Cu基体和Ni3Al粒子组成;经固溶处理,合金中的Ni3Al粒子固溶于铜基体,合金组织为过饱和的α-Cu基体;在时效过程中,Ni3Al粒子逐渐析出;合金的腐蚀速率随时效时间的延长逐渐升高;经固溶和时效处理后,合金的腐蚀性能优于其熔铸态,呈现良好的耐蚀性能。
The effects of solution and aging treatment on microstructure and corrosion properties of Cu-7Ni-3Al-1Fe-1Mn alloy were studied by means of optical microscope(OM), transmission electron microscopy(TEM), full immersion test and electrochemical test. The results show that the microstructure of the as-cast alloy is mainly composed of α-Cu matrix and Ni3Al particles;after solid solution treatment, the Ni3Al particles are dissolved in copper matrix and the microstructure of the alloy is supersaturated α-Cu matrix;during aging, the Ni3Al particles precipitate gradually;the corrosion rate of the alloy increases gradually with the increase of aging time;after solid solution and aging treatment, the corrosion performance of the alloy is better than that of the as-cast state, showing good corrosion resistance.
作者
杨冉
文九巴
周延军
宋克兴
牛立业
李士凯
郭慧稳
郁炎
YANG Ran;WEN Jiu-ba;ZHOU Yan-jun;SONG Ke-xing;NIU Li-ye;LI Shi-kai;GUO Hui-wen;YU Yan(Institute of Materials Science and Engineering,Henan University of Science and Technology,Luoyang 471023,China;Collaborative Innovation Center of Nonferrous Metals,Henan Province,Luoyang 471023,China;Chinaclo Luoyang Copper Processing Co Ltd,Luoyang 471039,China;Luoyang Ship Material Research Institute,Luoyang 471023,China)
出处
《材料热处理学报》
EI
CAS
CSCD
北大核心
2019年第12期74-78,共5页
Transactions of Materials and Heat Treatment
基金
十三五国家重点研发计划(2016YFB0301400)
关键词
铜合金
热处理
显微组织
耐蚀性
copper alloy
heat treatment
microstructure
corrosion resistance
