固溶处理对热压态CoCrW合金组织及力学性能的影响-金属学报.PDFVIP

* 固溶处理对热压态 CoCrW 合金组织及力学性能的影响 1) 1) 2) 2) 3) 3)* 游晓红 王刚刚 王 军 余 涛 张洪宇 韦 华 1) 太原科技大学材料科学与工程学院, 太原 030000 2) 驻某厂军代表室, 西安 710077 3) 中国科学院金属研究所, 沈阳 110016 摘 要 利用 SEM, XRD 和 TEM 等分析手段研究了固溶处理对热压烧结 CoCrW 合金相组成的影响, 通过硬度测试、室温拉伸和摩擦磨损实验, 研 究了固溶处理对热压烧结CoCrW 合金力学性能的影响. 结果表明, 热压态与固溶态CoCrW 合金的组成相均为M C , M C, CrCo 金属间化合物和γ-Co 23 6 6 基体; 固溶处理降低了合金中的M23C6 含量、原始颗粒边界, 同时改善了合金塑性和耐磨性能. 合金室温硬度、抗拉强度均随固溶温度升高、固溶时 间延长而先增高后降低. 关键词 CoCrW 合金, 热压烧结, 显微组织, 固溶处理, 力学性能 中图法分类号 TG245 文献标识码 A 文章编号 0412-1961(2016)02-0000-00 EFFECT OF SOLID SOLUTION TREATMENT ON MICROSTRUCTURE AND MECHANICAL PROPERTIES OF HOT-PRESSED CoCrW ALLOYS 1) 1) 2) 2) 3) 3)* YOU Xiaohong , WANG Ganggang , WANG Jun , YU Tao , ZHANG Hongyu , WEI Hua 1) School of Materials Science and Engineering, Taiyuan University of Science and Technology, Taiyuan 030000, China 2) Military Representative Office in Factory, Xi’an 710077, China 3) Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China Correspondent: WEI Hua, professor, Tel: (024 E-mail: hwei@imr.ac.cn Manuscript received 2015-05-03, in revised form 2015-08-19 ABSTRACT Co-based alloy has high strength, good corrosion and wear resistance, and is widely used in aviation industry, nuclear industry. The cast Co-based alloys has high hardness brittleness, but the toughness is low,