回火温度对40CrNiMo钢耐摩擦磨损及抗氧化性能的影响  

Effect of Tempering Temperature on Friction-Wear Resistance and Oxidation Resistance of 40CrNiMo Steel

作　　者：杨瑞 任文洋 张铮 张杰 杨燃 俞城双 杨慧君[1] 乔珺威[1] YANG Rui;REN Wenyang;ZHANG Zheng;ZHANG Jie;YANG Ran;YU Chengshuang;YANG Huijun;QIAO Junwei(College of Materials Science and Engineering,Taiyuan University of Technology,Taiyuan Shanxi 030024,China;Zhejiang Laifual Drive Co.,Ltd.,Shengzhou Zhejiang 312462,China)

机构地区：[1]太原理工大学材料科学与工程学院,山西太原030024 [2]浙江来福谐波传动股份有限公司,浙江嵊州312462

出　　处：《上海金属》2024年第4期47-52,共6页Shanghai Metals

基　　金：山西省重点研发计划(202102050201008);国家自然科学基金(52271110)。

摘　　要：通过扫描电子显微镜、洛氏硬度计、摩擦磨损试验机等系统研究了回火温度对40CrNiMo钢组织、硬度、摩擦磨损性能及抗氧化性能的影响。结果表明:随着回火温度的升高,钢中渗碳体加快析出并逐渐聚集球化,其形貌从细片状转变为粗粒状,500℃回火的钢铁素体发生再结晶;硬度与耐磨性呈下降趋势。不同温度回火的试样在800℃的抗氧化评级为GB/T 13303—1991中的4级“弱抗氧化性”,表明回火40CrNiMo钢适用于温度较低的服役环境。Effects of tempering temperature on the microstructure,hardness,friction-wear resistance and oxidation resistance of 40CrNiMo steel were systematically studied by using scanning electron microscope,Rockwell hardness tester and friction-wear tester.The results showed that with(a)the increase in tempering temperature,the formation and spheroidization of cementite precipitation were accelerated,and the morphology gradually changed from flake-like to coarse granular,the recrystallization of ferrite occurred in the steel tempered at 500℃;(b)the hardness and wear resistance showed a decreasing trend.The anti-oxidation level was grade 4(weak oxidation resistance)for the samples tempered at different temperatures after oxidation at 800℃according to the Chinese standard GB/T 13303—1991,indicating that the tempered 40CrNiMo steel is suitable for service environments at lower temperature.

关 键 词：40CrNiMo 钢 回火温度 耐摩擦磨损性能 抗氧化性能 

分 类 号：TG161[金属学及工艺—热处理]