摘要
通过中频感应熔炼-铁模浇铸的方法制备了30 mm×100 mm的Cu-Cr-Zr-Ti合金铸锭,采用固溶-时效工艺进行了热处理。使用涡流电导率仪、显微硬度计、金相显微镜、扫描电镜对合金的组织与性能进行了分析。研究表明,大气熔炼的Cu-Cr-Zr-Ti铸态组织中存在树枝状初生Cr相和棒状富Zr相,不同Cr、Zr、Ti含量合金铸态、固溶态显微组织存在较大差异;Ti含量的增加明显降低合金的导电率,提升合金的硬度。
Cu-Cr-Zr-Ti alloy was melted using medium frequency induction furnace,and cast into iron mold with 30 mm × 100 mm dimensions,then treated with a solution-aging process. Microstructure evolution,mechanical and physical properties of the alloy were analyzed by using scanning electron microscope,optical microscope,electrical conductivity analysis and tensile test. The experimental results show that the dendritic primary Cr phases and bar-shaped Zr-rich phases are formed in the Cu-Cr-Zr-Ti alloy during solidification process.The additions of Cr,Zr and Ti lead to significant difference in microstructure of the as-cast and solution treated samples. The increase of Ti content significantly reduces the electrical conductivity and enhances the hardness of the alloy.
作者
龚留奎
袁继慧
罗富鑫
袁大伟
张建波
汪航
杨斌
Gong Liukui;Yuan Jihui;Luo Fuxin;Yuan Dawei;Zhang Jianbo;Wang Hang;Yang Bin(School of Materials Science and Engineering,Jiangxi University of Science and Technology,Ganzhou Jiangxi 341000,China)
出处
《金属热处理》
CAS
CSCD
北大核心
2018年第8期7-12,共6页
Heat Treatment of Metals
基金
国家科技部重点研发计划(2016YFB0301400)
关键词
Cu-Cr-Zr-Ti
初生相
硬度
导电率
Cu-Cr-Zr-Ti alloy
primary phase
microhardness
electrical conductivity
