摘要
通过硬度和导电率的测量、光学显微镜和透射电镜(TEM),研究了固溶时效工艺对Cu-Ni-Co-Si合金组织和性能的影响。结果表明:经过950℃×30 min水淬+500℃×480 min随炉冷却后,Cu-Ni-Co-Si合金得到良好的综合性能:硬度为243.55 HV3,导电率为42.24%IACS;添加少量的V有利于提高二次时效后合金的导电率,并且进行适当的一次时效对提高合金的导电率和硬度是有利的,可以使二次时效试样迅速获得良好的综合性能;Cu-Ni-Co-Si合金的主要强化相为盘状正交结构的δ-(Co,Ni)2 Si,过饱和固溶体析出的沉淀物均匀分布,但位错缠结始终存在,其中基体与析出相的位向关系为[001]m//[110]p,(010)m//(001)p。
Effects of solution and aging on the properties and microstructure of Cu-Ni-Co-Si alloy were investigated by means of hardness and electrical conductivity measurement,optical microscope and transmission electron microscope(TEM).The results show that the Cu-Ni-Co-Si alloy has good comprehensive properties after solution treating at 950℃for 30 min plus aging at 500℃for 480 min,its hardness is 243.55 HV3,electrical conductivity is 42.24%IACS.A few vanadium is beneficial to improve the electrical conductivity of the alloy after two-step aging,and pre-aging is beneficial to improve the electrical conductivity and hardness of the alloy,so that the two-step aging specimen can quickly obtain good comprehensive properties.The main strengthening phases of the Cu-Ni-Co-Si alloy areδ-(Co,Ni)2 Si,and the orientation relationship between the matrix and the precipitate phase is[001]m//[110]p,(010)m//(001)p.
作者
邹金峰
余方新
程建奕
蔡志俊
Zou Jinfeng;Yu Fangxin;Cheng Jianyi;Cai Zhijun(School of Materials Science and Engineering,Nanchang University,Nanchang Jiangxi 330031,China)
出处
《金属热处理》
CAS
CSCD
北大核心
2020年第7期11-16,共6页
Heat Treatment of Metals
基金
国家自然科学基金(51661022)
国家科技部重点研发计划(2016YFB0301302)。
