不同淬火加热温度对GCr15钢球显微组织及硬度的影响
Effects of Different Quenching Heating Temperatures on Microstructure and Hardness of GCr15 Steel Balls
袁影 1钱坤 1昝祥 2郭金福 3王登峰3
作者信息
- 1. 合肥工业大学 材料科学与工程学院,安徽 合肥 230009
- 2. 合肥工业大学 材料科学与工程学院,安徽 合肥 230009;合肥工业大学 智能制造技术研究院,安徽 合肥 230051
- 3. 合肥力和机械有限公司,安徽 合肥 231145
- 折叠
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(0.4～0.8 μm)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.
Abstract
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(0.4-0.8 μm),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.
关键词
GCr15钢/淬火加热温度/未溶碳化物/残余奥氏体/硬度Key words
GCr15 steel/quenching heating temperature/undissolved carbide/retained austenite/hardness引用本文复制引用
基金项目
安徽省科技重大专项项目(109246449009)
出版年
2024
NETL
NSTL
万方数据