Stress Dependence of Transformation Plastic Behavior  

作　　者：Tatsuo Inoue 

机构地区：[1]Fukuyama University, Fukuyama/Himshima, Japan

出　　处：《材料热处理学报》2004年第5期208-213,共6页Transactions of Materials and Heat Treatment

基　　金：one part of the fruits of VHT(Virtual Heat Treatment)Project of IMS(Intelligent Manufacturing Science)Program supported by Ministry of Economy,Trade and Industries,Japan.

摘　　要：Transformation plasticity is known to play an important role in the course of heat treatment processes, and so affect the results of heat treatment simulations, which means that the transformation plasticity coefficient is necessary to be identifies. The authors developed a new method by use of four-point bending system of a beam to identify transformation plasticity coefficient taking advantage of its easiness and high accuracy compared with other conventional methods like tension test, etc., and identified the coefficient for four kinds of steels; plane carbon steel, Cr-steel, Cr-Mo steel and bearing steel. In this paper, further experimental data are presented for the steels if the coefficient Kp during pearlite transformation depend on the applied stress. Obtained results reveals that the stress dependence of Kp is rather trivial except for uncertain tendency detected in plane carbon steel. The relation between the Kp and carbon content included is discussed in comparison with other data referred from references.Transformation plasticity is known to play an important role in the course of heat treatment processes, and so affect the results of heat treatment simulations, which means that the transformation plasticity coefficient is necessary to be identifies. The authors developed a new method by use of four-point bending system of a beam to identify transformation plasticity coefficient taking advantage of its easiness and high accuracy compared with other conventional methods like tension test, etc., and identified the coefficient for four kinds of steels; plane carbon steel, Cr-steel, Cr-Mo steel and bearing steel. In this paper, further experimental data are presented for the steels if the coefficient Kp during pearlite transformation depend on the applied stress. Obtained results reveals that the stress dependence of Kp is rather trivial except for uncertain tendency detected in plane carbon steel. The relation between the Kp and carbon content included is discussed in comparison with other data referred from references.

关 键 词：相变塑性 四点弯曲试验 应力关系 金属热机械性能 

分 类 号：TG115.5[金属学及工艺—物理冶金]