非真空熔炼Cu-Cr-Zr合金的性能研究.pdfVIP

学兔兔 铸 造 Oct．2010 FOUNDRY V01．59 N0．1O 非真空熔炼Cu—Cr—Zr合金的性能研究 陶业卿 ，刘 平 一，陈小红 ，贾淑果 ，郭望望 (1．河南科技大学材料科学与工程学院，河南洛阳471003；2．上海理工大学材料科学与工程学院，上海200093) 摘要：探讨了用中频感应炉在大气条件下熔炼高强高导cu．c卜Zr合金的工艺。同时使用了镁砂坩埚和石墨坩埚，熔炼 温度控制在1 250～1 350℃，用石墨+木炭覆盖，Zr以中间合金的方式加入。试验结果表明，该工艺在大气下熔炼合金 能够明显减少吸气；镁砂坩埚能够防止合金元素和石墨反应生成碳化物，提高了元素的收得率；铸锭成分稳定均匀、 组织致密；CrY2单质的形式存在，而zr与Cu形成了化舍物，主要分布于晶界；通过其后续处理能够得到高性能铜合金。 关键词：非真空熔炼；Cu—Cr—Zr#金；性能 中图分类号：TG146．1 1 文献标识码：A 文章编号：1001—4977(2010)10—1020—04 Research on Non—·Vacuum Melting of Cu—-Cr-Zr Alloy TAO Ye-qing ，LIU Ping’，2 7 CHEN Xiao—hong ，JIA Shu—guo’，GUO Wang-wang (1．Department of Materials，Henan University of Science and Technology，Luoyang 471 003 Henan，China；2．Department of Materials，University of Shanghai for Science and Technology，Shanghai 200093，China) Abstract： The melting technique of high—strength and high—conductivity Cu—Cr-Zr alloy using medium frequency induction furnace in atmosphere was discussed。Magnesia crucible and graphite crucible were used．and the melting temperature was kept in the range of 1 250—1 350℃．Graphite and charcoa1 were used as the cover agent．and Cu—Zr intermediate alloy was added．The results show that smelting in atmosphere can obviously reduce suction of the alloy；absorptivities of elements were increased by using magnesia crucible in smelting；the ingot had a steady uniformly chemical composition and sound structure：chr0mium occurred as single phase while zirconium existed in grain boundary mainly as compound．The high performance Cu-Cr—Zr alloy could be p