淬火温度对Q-P钢组织与性能的影响  

Effects of Quenching Temperature on Microstructure and Mechanical Properties of Q-P Steel

作　　者：姜秋月[1] 贾坤宁[1] 

机构地区：[1]长春工程学院机电学院,吉林长春130012

出　　处：《热加工工艺》2017年第24期235-237,共3页Hot Working Technology

基　　金：吉林省教育厅基金资助项目(0142120160006)

摘　　要：研究了淬火温度对Q-P处理TRIP600试验钢组织和力学性能的影响。利用金相显微镜、XRD和拉伸试验机进行了组织分析和性能测试。结果表明:Q-P处理后的试验钢,其显微组织主要为马氏体、贝氏体、铁素体和残余奥氏体;当淬火温度为350℃时,得到最佳的综合力学性能,屈服强度达到578.6 MPa,抗拉强度达到759.3 MPa,伸长率达到30.2%,强塑积达到22930.8MPa·%。The effects of quenching temperature on microstructure and mechanical properties of TRIP600 steel were studied. The microstructure was analyzed and the mechanical properties were tested by using microscope, XRD and tensile testing machine. The results show that, after Q-P heat treatment process, the microstructure of steel mainly includes martensite, bainite, ferrite and retained austenite. The optimum mechanical properties can reach when the quenching temperature is at 350 ℃. Yield strength reaches 578.6 MPa, tensile strength reaches 759.03 MPa, elongation reaches 30.2%, and product of strength and elongation reaches 22930.8 MPa. %.

关 键 词：TRIP600 Q—P 强塑积 残余奥氏体 

分 类 号：TG156.31[金属学及工艺—热处理]