高碳非调质钢连续冷却时的珠光体型相变及力学性能  

Pearlitic Transformation and Mechanical Properties of High Carbon Non Hardened tempered Steels in Continuous Cooling

作　　者：刘云旭[1] 朱启惠[1] 刘萍[2] 

机构地区：[1]吉林工学院材料工程系,吉林长春130012 [2]吉林大学材料科学系

出　　处：《金属热处理》2000年第4期9-11,共3页Heat Treatment of Metals

基　　金：吉林省科委99技术攻关项目

摘　　要：对 3种不同含碳量 (0 6 4%、0 70 %、0 76 % )的高碳非调质钢在连续冷却条件下 ,过冷奥氏体发生珠光体型相变的规律及力学性能进行了试验研究。得出为了保证工件稳定、可靠地获得要求的珠光体型转变产物和力学性能 ,必须使冷却速度控制在1 0℃ /s≤V8/5≤ 10℃ /s范围。The mechanism of austenite pearlite transformation during continuous cooling and mechanical properties of three kind high carbon non hardened tempered steels(NHTS)containing 0 64%C、0 70%C and 0 76%C have been studied.The results showed that every effort should be made to control cooling rate 1 0℃/s≤V 8/5 ≤10 0℃/s in order to obtain stable and reliable mechanical properties and microstructures according to the technical requirements.The factors that effect mechanical properties of pearlitic transformation products and the principle of controlled cooling for NHTS parts are also discussed.

关 键 词：高碳非调质钢 珠光体型相变 控制冷却 力学性能 

分 类 号：TG161.1[金属学及工艺—热处理] TG142.15[金属学及工艺—金属学]