摘要
对经冷墩光球后的GCr15钢球进行不同淬火加热温度的淬火实验,使用光学显微镜、SEM和激光共聚焦显微镜表征显微组织,X射线衍射和维氏硬度计分别表征残余奥氏体含量和硬度。结果表明,随着淬火加热温度的升高,片状马氏体组织逐渐粗大,未溶碳化物体积分数逐渐减少,碳化物粒径向中间尺寸(0.4~0.8μm)靠拢,原奥氏体晶粒尺寸及残余奥氏体体积分数逐渐增加,硬度现出先增加后下降趋势。
GCr15 steel balls were quenched at different quenching heating temperatures.The microstructure was characterized by optical microscope,SEM and laser confocal microscope.The content and hardness of residual austenite were characterized by X-ray diffraction and Vickers hardness meter respectively.The experimental results show that with the increase of quenching heating temperature,the flaky martensite structure gradually increases,the number of undissolved carbides gradually decreases,the particle size of carbides approaches the middle size(0.4-0.8μm),the grain size of original austenite and the volume fraction of residual austenite gradually increase,and the hardness shows a trend of increasing first and then decreasing.
作者
袁影
钱坤
昝祥
郭金福
王登峰
YUAN Ying;QIAN Kun;ZAN Xiang;GUO Jinfu;WANG Dengfeng(School of Materials Science and Engineering,Hefei University of Technology,Hefei 230009,China;Intelligent Manufacturing Institute,Hefei University of Technology,Hefei 230051,China;Hefei Lihe Machinery Co.,Ltd.,Hefei 231145,China)
出处
《热加工工艺》
北大核心
2024年第15期83-88,93,共7页
Hot Working Technology
基金
安徽省科技重大专项项目(109246449009)。
关键词
GCR15钢
淬火加热温度
未溶碳化物
残余奥氏体
硬度
GCr15 steel
quenching heating temperature
undissolved carbide
retained austenite
hardness
作者简介
袁影(1998-),男,安徽淮南人,硕士生,主要从事金属材料热处理研究,E-mail:yuan_jing_chuan@163.com;通讯作者:昝祥(1979-),男,江苏徐州人,副教授,博士,主要研究方向:聚变堆用先进钨基材料的制备及服役性能、金属材料塑性加工工艺及模具设计、材料动态力学行为,E-mail:zanx@hfut.edu.cn。
