Development and Application of 1100 MPa HeatTreated Rail
DENG Jianhui1,XU Quan1,DONG Yajun1,ZOU Ming1,CHEN Zhaoyang2
1. Panzhihua Iron and Steel Research Institute, Panzhihua 617000, Sichuan, China; 2. Metal Chemical Lab of Railway Science Reaearch Institute, Beijing 100081, China
Abstract：By researching and analyzing the damage feature of line rail, the heattreated rail with lower carbon content, 1100 MPa tensile strength and better toughness, was thought to be favorable to decrease contact fatigue damage and improve performance in the fast line of transporting both passengers and goods. Through researching the steel composition, heattreatment structure and properties,a new carboncontaining on line heattreated rail steel was developed, which tensile strength is 10801150 MPa,KIC is 4551 MPa·m1/2, and the crack initiation rate and propagation rate is lower than that of traditional rail steel. The rails had demonstrated good anticontactfatiguedamage and better wearresisting performance after use on a line with train speed of 160 km/h and transportation of 72000000 ton a year for a year.The rail working face contacting the wheel was bright and no contact fatigue crack was observed.The wearresistance of this rail is better that of 1000 MPa rail.
邓建辉;徐权;董雅君;邹明;陈朝阳. 1100 MPa级热处理钢轨开发及使用[J]. 钢铁, 2008, 43(6): 78-0.
DENG Jianhui;XU Quan;DONG Yajun;ZOU Ming;CHEN Zhaoyang. Development and Application of 1100 MPa HeatTreated Rail. Iron and Steel, 2008, 43(6): 78-0.
2008, Vol. 43 
