Fatigue Crack Propagation in Plain Carbon Dual-phase Steel

材料科学技术（英文）, 1992, 8(4): 249-254.

Fatigue Crack Propagation in Plain Carbon Dual-phase Steel

LEI Tingquan LIN Guangyong ** Dept.of Metals and Technology , Harbin Institute of Technology , Harbin , 150006 , China+ To whom correspondence should be addressed

Keywords： fatigue crack propagation , null , null

The effect of volume fraction V_M and carbon content(%C)_M of martensite was studied on the fa- tigue crack propagation behaviour of plain carbon martensite plus ferrite M+F dual-phase steel.The experimental results show that the △K_(th)decreases and da/dn increases with increasing V_M and (%C)_M at a load ratio R=0.05.High△K_(th)values are obtained by obvious crack closing ability caused by high roughness of the fractured surfaces.

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材料期刊网

Fatigue Crack Propagation in Plain Carbon Dual-phase Steel

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