摘要
对比研究了Ｂ对添加Ｔｉ和复合添加Ｔｉ、Ｎｂ 的冷轧ＩＦ钢板的显微组织和疲劳性能的影响。研究结果表明，Ｂ可以细化这两种ＩＦ钢的退火组织，改善晶界结合强度，提高疲劳强度。疲劳断口分析结果表明，不加Ｂ的ＩＦ钢表现出沿晶断裂特征，加Ｂ后可使ＩＦ钢断裂性能得以改善，表现出穿晶断裂特征。
Effect of boron on fatigue properties of cold rolled Ti bearing and Ti Nb bearing IF sheet steels was investigated through annealing microstructure examination, fatigue tests and fracture surface analysis. It was found that the boron addition is effective to improve the fatigue resistance of Ti bearing IF steel, and the addition of boron and niobium is more effective to refine the annealing microstructure and to enhance the fatigue strength. The results of fracture surface analysis show that IF steel without boron addition exhibits the character of intergranular fracture and that with boron addition transgranular fracture, which leads to the improvement of fatigue resistance.
出处
《钢铁研究学报》
CAS
CSCD
北大核心
1999年第5期34-37,共4页
Journal of Iron and Steel Research
基金
国家教育部留学回国人员基金
