45Si2Cr轨枕钢筋断裂的机理分析  

An Analysis on Fracture Mechanism of Steel 45Si2Cr Reinforcing Bar for Railroad Sleeper

作　　者：刘白[1] 李钢[1] 印德华[2] 

机构地区：[1]长沙大学机电工程系,长沙410003 [2]中国矿业大学北京校区

出　　处：《特殊钢》2002年第2期26-27,共2页Special Steel

摘　　要：电化学反应和应力腐蚀是 4 5Si2Cr预应力钢筋断裂的根本原因 ,钢材中夹杂物存在 ,拉应力不均匀和表面缺陷加速了应力腐蚀开裂的过程 。It has been found that the electrochemical reaction and stress corrosion are the basic cause of fracture of steel 45Si2Cr reinforcing bar, and the inclusion in steel, inhomogeneous tensile stress and surface defects of reinforcing bar accelerate the SCC course. The improving technical measures are presented in this paper. <

关 键 词：45Si2Cr钢筋 断裂 应力腐蚀 技术改进 铁轨 轨枕 机理分析 

分 类 号：TG172.9[金属学及工艺—金属表面处理]