等温处理对辙叉用新型贝氏体钢接触疲劳性能的影响  

Effect of isothermal treatment on contact fatigue of a new bainite steel for frog

作　　者：张仁进[1] 栾道成[1] 田翰林[1] 熊师兵 孙卫鹏 

机构地区：[1]西华大学材料科学与工程学院,四川成都610039

出　　处：《金属热处理》2015年第12期106-109,共4页Heat Treatment of Metals

基　　金：四川省科技支持项目(2014GZ0087)

摘　　要：研究不同等温处理工艺对电渣重熔冶炼得到的辙叉用新型贝氏体钢滚动接触疲劳性能的影响。结果表明,经等温处理后,试样接触疲劳性能有不同程度的提高,且随着等温温度的降低,接触疲劳性能呈现出先增大后减小的趋势;在400℃下等温时,试样的滚动接触疲劳性能最好。通过对失效断口形貌分析,发现辙叉用新型贝氏体钢主要失效形式为麻点剥落和浅层剥落,且同一试样可能同时出现两种剥落形式。Effect of isothermal treatment on contact fatigue of a new bainite steel for frog prepared by electroslag remelting was studied.The test results show that after isothermal treatment,the contact fatigue properties of the samples are increased by different degrees,and with isothermal temperature decreasing,the contact fatigue properties first increases and then decreases.At 400℃ isothermal temperature,the contact fatigue property is the best.Through failure fracture morphology analysis,the main failure modes of a new bainite steel for frog is pitting spalling and shallow laminal spalling,and two types spalling may appear on the same sample.

关 键 词：贝氏体钢 等温处理 接触疲劳 

分 类 号：TG142.1[一般工业技术—材料科学与工程]