摘要
研究了中碳马氏体钢的组织和力学性能的关系。结果表明,马氏体中有少量铁素体析出,疲劳裂纹会优先沿铁素体扩展,疲劳裂纹的扩展速率下降,而断裂韧性和门槛值略有提高。
The relati onship between microstructure of medium carbon martensite steel and its mechanical performance was studied. The results show that a small amount of ferrite exists in martensite. The fatigue crack would extend along the ferrite preferentially on crack propagation,and the fatigue crack propagation rate declines,but the fracture toughness and threshold value increase slightly.
出处
《热加工工艺》
CSCD
北大核心
2015年第18期84-85,共2页
Hot Working Technology
关键词
中碳钢
马氏体
铁素体
析出
裂纹扩展
medium carbon steel
martensite
ferrite
precipitation
crack propagation
