工程机械用Q960钢的调质热处理工艺  

Quenching and Tempering Technology of Q960 Steel Used for Engineering Machinery

作　　者：康健[1] 卢峰[1,2] 王超[1] 王昭东[1] 王国栋[1] 

机构地区：[1]东北大学轧制技术及连轧自动化国家重点实验室,沈阳110004 [2]唐钢宽厚板项目经理部,唐山063000

出　　处：《机械工程材料》2012年第1期7-10,57,共5页Materials For Mechanical Engineering

基　　金：中央高校基本科研业务费资助项目(N090607001);国家科技支撑计划项目(2006BAE03A08)

摘　　要：为开发960MPa级工程机械用Q960钢板,研究确定了其调质热处理工艺。结果表明:其最佳的淬火工艺为900℃保温20min,最佳的回火工艺为600℃保温40min;经最佳调质热处理后试验钢的组织为回火索氏体,屈服强度为1 030 MPa,抗拉强度为1 080 MPa,伸长率为16.8%,-40℃冲击功达144J,满足GB/T 16270-2009的要求。To develop Q960 steel plates used for engineering machinery,heat treatment technologyies of quenching and tempering was studies.The results show that the optimum quenching technology was heating at 900 ℃ for 20 min,and the optimum tempering technology was heating at 600 ℃ for 40 min.The microstructure of tested steel was temper sorbit after optimum quenching and tempering heat treatment,and yield strength,tensile strength,elongation and impact energy at-40 ℃ respectively was 1 030 MPa,16.8% and 144 J,they could meet the acquirement of GB/T 16270-2009.

关 键 词：高强钢 调质热处理 显微组织 力学性能 

分 类 号：TH117.3[机械工程—机械设计及理论]