武汉工程职业技术学院学报Issue(1)：13-15,3.
桥梁用钢三点弯曲断裂试验研究与分析
An Analysis of And Research on Three-Point Bending Fracture Test of Steel for Bridge
杜丽影 1邱保文 1李荣锋 1刘冬1
作者信息
- 1. 武汉钢铁 集团 公司研究院 湖北 武汉 430080
- 折叠
摘要
Abstract
Based on the latest ultra-low-carbon Bainitic Steel , the impact toughness , J integral and CTOD were investigated and analyzed and the effect of test temperature on impact crack start work Wi ,ex-tension work Wp and overall impact work Wt was discussed .The drag curves of CTOD and J integral were also drawn in this paper .The result shows that the numerical values of Wi ,Wp and Wt tend to go down as the temperature decreases .When the temperature is at -80℃ and Wt is 310J ,toughness-brittleness trans-formation doesn't occur .δ0 .2BL andδJ0 .2BL can be calculated respectively by drag curves ,namely 0 .31mm and 273 .75 K N/m .关键词
桥梁用钢/冲击断裂/CTOD/J积分Key words
steel for bridge/impact fracture/CTOD/J integral分类
矿业与冶金引用本文复制引用
杜丽影,邱保文,李荣锋,刘冬..桥梁用钢三点弯曲断裂试验研究与分析[J].武汉工程职业技术学院学报,2014,(1):13-15,3.
