热处理工艺对CM2高速钢组织性能的影响  

Effect of Heat Treatment Process on Microstructure and Properties of CM2 High Speed Steel

作　　者：何星[1] 李炎铮 雷雄辉 郑毅 陈卓[1] 韦习成[1] HE Xing;LI Yanzheng;LEI Xionghui;ZHENG Yi;CHEN Zhuo;WEI Xicheng(School of Materials Science and Engineering,Shanghai University,Shanghai 200444,China)

机构地区：[1]上海大学材料科学与工程学院,上海200444

出　　处：《上海金属》2019年第1期66-70,共5页Shanghai Metals

基　　金：上海大学联合大作业项目-耐磨铸钢的成分优化及耐磨性评价

摘　　要：对CW6Mo5Cr4V2(CM2)高速钢进行了不同温度的淬火和回火处理。检测了热处理后CM2钢的硬度、冲击韧性和耐磨性能。结果表明,经1 150～1 250℃淬火并于550℃回火的CM2钢的硬度随淬火温度的升高先升高后下降。1 200℃淬火、550℃3次回火的CM2钢的硬度高达65. 4 HRC,且耐磨性与冲击韧性优异。CM2钢的磨损机制为粘着磨损、氧化磨损和磨粒磨损并存。CW6Mo5Cr4V2( CM2) high speed steel was quenched from different temperatures and tempered at different temperatures. Hardness,impact toughness,and wear resistance of the CM2 steel after heat treatment were detected. From the detection results it was seen that hardness of the CM2 steel quenched from 1150 ℃ to 1250 ℃ and tempered at 550 ℃ first increased and then decreased with the increase of quenching temperature,and that the CM2 steel subjected to quenching from 1200 ℃ followed by three separate tempering treatments at 550 ℃ exhibited as high hardness as65. 4 HRC,excellent wear resistance and impact toughness. The mechanism of failure for CM2 steel involved adhesive wear,oxidative wear and abrasive wear.

关 键 词：CM2高速钢 淬火 回火 磨损 

分 类 号：TG142.1[一般工业技术—材料科学与工程] TG161[金属学及工艺—金属材料]