FATIGUE BEHAVIOR AND SHORT CRACK GROWTH IN FERRITIC-PEARLITIC-BAINITIC STEEL

摘要：

Fatigue behavior of ferritic-pearlitic-bainitic steel,in particular the initiation and short crack growth has been studied.Smooth cylindrical spec mens and cylindrical specimens having a shallow notch were produced from a massive forcing.Fatigue cracks initiate preferably in persistent slip markings in areas of proeutectoid ferrte.Fatigue cracks grow with a contribution of crack linkage.The kinetics of short crack growth has been described using the concept of an equivalent crack.The plastic strain amplitude plays a dominant role in crack initiation stage,in the growth of short cracks and in the fatigue life evaluation.

关键词： fatigue life cyclic plasticity short crack mean stress

作者: J.Polak M.Petrenec

作者单位: Institute of Physics of Materials Academy of Sciences,Zizkova 22 61662 Brno Czech Republic

会议类型: 国际会议

会议名称: The Third International Conference on Heterogeneous Material Mechanics(第三届国际非均匀材料力学会议)

会议地点: 上海

会议语种:英文

页码: 857-860

在线出版日期: 2011-05-22（万方平台首次上网日期，不代表论文的发表时间）