摘要
采用金属型和石墨型铸造法制备CuCr0.9合金,并对合金进行固溶、时效处理,用布氏硬度仪和数字金属导电率测量仪测定合金的硬度和导电率。结果表明:金属型铸造的CuCr0.9合金在920℃固溶、450℃时效2 h,其硬度和导电率分别为64 HRB、90.1%IACS,该工艺适合工业化批量生产;而石墨型铸造的CuCr0.9合金进行同样的固溶时效后其硬度和导电率分别为75HRB、93.2%IACS,虽然该工艺所制备合金性能优异,但其成本较高。从两种铸型制备的CuCr0.9合金性能分析可知,合金极易过时效,且固溶处理温度越高,合金过时效越明显。
The hardness and electrical conductivity of CuCr0.9 alloy were examined by brieUe hardness tester, conductivity tester. The hardness and electrical conductivity of the alloys after metal casting and then resolution 940 ℃ for lh and aging 450℃ for 2 h reach 64 HRC, 90.1%IACS, respectively, and the process is suitable for the commercial production; the alloys prepared by graphite casting resolution at 940 ℃ for lh and aging at 450℃ forl.5 h reaches 75HRC, 93.2%IACS, respectively, but it is unpractical to carry out on the commercial production line. The results indicte the prepared CuCr alloys are sensitive to aging temperature and solution time, and easily inclined towards over aging, and the higher solution and aging temperature ,the more distinctly over aging.
出处
《热加工工艺》
CSCD
北大核心
2013年第11期33-35,共3页
Hot Working Technology
基金
甘肃省中小企业创新基金项目(X201115)
甘肃省杰出青年科学基金项目(111RJDA0103)
作者简介
李亚明（1985-），男，工程，师硕士；主要研究方向：铜合金材料及表面工程技术的研究：电话：13669332954；E-mail：gsjxlym@163．com
