热处理对40Cr13VTi不锈钢组织和性能的影响
Effect of heat treatment on microstructure and properties of 40Cr13VTi stainless steel
刘禹 1孙迎建 1张铁壁 1郗艳梅1
作者信息
- 1. 河北水利电力学院机械工程系,河北沧州 061001;河北省工业机械手控制与可靠性技术创新中心,河北沧州 061001;沧州市工业机械手控制与可靠性技术创新中心,河北沧州 061001
- 折叠
摘要
为了优化含V、Ti的40Cr13VTi钢的回火工艺,研究了 1030 ℃油淬后不同回火温度对40Cr13VTi钢组织、析出相及力学性能的影响.采用光学显微镜(OM)、扫描电镜(SEM)和能谱仪(EDS)分析了合金的显微组织.对40Cr13VTi不锈钢进行了拉伸、冲击性能和硬度测试.结果表明,随着回火温度的升高,碳化物析出数量逐渐增多,形状逐渐由颗粒变为片状,与原始马氏体板条方向一致,且大部分集中在马氏体边界处;当回火温度为350 ℃时,40Cr13VTi马氏体不锈钢的综合力学性能最佳,屈服强度为1360 MPa,抗拉强度为1717 MPa,冲击吸收能量为6.8 J,硬度为43.1 HRC.
Abstract
After 1030 ℃ oil quenching,the effect of tempering temperature on the microstructure,precipitates and mechanical properties of the 40Cr13VTi steel containing V and Ti was studied to optimize the tempering process.The microstructure of the steel was analyzed by using optical microscope(OM),scanning electron microscope(SEM)and energy dispersive spectrometer(EDS).Tensile,impact and hardness tests were conducted on the tested steel.The results show that as the tempering temperature increases,the carbide precipitates gradually increase in number,and gradually change from particles to flakes in shape,which are consistent with the original martensite lath direction,and most of them are concentrated at the martensite boundary.When the tempering temperature is 350 ℃,the comprehensive mechanical properties of the 40Crl3VTi martensitic stainless steel are the best,with yield strength of 1360 MPa,tensile strength of 1717 MPa,impact absorbed energy of 6.8 J,and hardness of 43.1 HRC.
关键词
40Cr13VTi马氏体不锈钢/回火温度/显微组织/析出相/力学性能Key words
40Cr13VTi martensitic stainless steel/tempering temperature/microstructure/precipitated phase/mechanical properties引用本文复制引用
基金项目
河北省高等教育教学改革研究与实践项目(2022GJJG392)
出版年
2024
NETL
NSTL
万方数据