淬火温度对GCr15钢十字轴的数值模拟与试验  

Numerical Simulation and Experiment of Different Quenching Temperature of GCr15 Steel Cross Shaft

作　　者：姚芳[1] 胡斌 贾会星[1] YAO Fang;HU Bin;JIA Hui-xing(College of Mechanical and Automotive Engineering,Chuzhou Polytechnic,Chuzhou 239000,China)

机构地区：[1]滁州职业技术学院机械与汽车工程学院,安徽滁州239000

出　　处：《滨州学院学报》2022年第6期91-96,共6页Journal of Binzhou University

基　　金：滁州职业技术学院科研项目(YJY 202023)。

摘　　要：采用数值模拟的方法研究三种不同温度下淬火对GCr15钢十字轴组织演变和硬度的影响。利用Deform 3D软件建立十字轴数值模拟模型,得到三种温度下淬火过程温度变化曲线、淬火后组织含量云图及表面和芯部硬度。最后对GCr15钢试样在三种温度下进行淬火试验,通过金相显微镜和洛氏硬度计得到显微组织和硬度大小。结果显示:淬火试验与数值模拟结果相似,在840℃下数值模拟的硬度最大且马氏体含量最多,在该温度下试验得到的隐针状马氏体和细小针状马氏体最多,硬度也最大;在800℃和880℃下,由于淬火温度过低或过高导致淬火后显微组织和硬度结果较差。The effects of quenching at three different temperatures on microstructure evolution and hardness of GCr15 steel are studied by numerical simulation and experiment.Using Deform-3D software,the numerical simulation model of the cross shaft is established,and the temperature change curve,the microstructure cloud chart after quenching and the hardness of the surface and core are obtained.Finally,GCr15 steel samples are quenched at three temperatures,and the microstructure and hardness at different temperatures are obtained by metallographic microscope and rockwell hardness tester.The results of quenching test are similar to that of numerical simulation.At 840℃,the maximum hardness and the maximum content of Martensite are obtained.However,the results of microstructure and hardness are poor at 800℃and 880℃because of too low and too high quenching temperature.

关 键 词：淬火 数值模拟 硬度 马氏体 

分 类 号：TG162.71[金属学及工艺—热处理]