| Fatigue Crack Propagation in Plain Carbon Dual-phase Steel |
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| 作者姓名： | 雷廷权 林广湧 |
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| 作者单位： | Dept.of Metals and Technology Harbin Institute of Technology，Harbin，150006，China，Dept.of Metals and Technology，Harbin Institute of Technology，Harbin，150006，China |
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| 摘 要： | The effect of volume fraction V_M and carboncontent(%C)_M of martensite was studied on the fa-tigue crack propagation behaviour of plain carbonmartensite plus ferrite M+F dual-phase steel.Theexperimental results show that the △K_(th)decreasesand da/dn increases with increasing V_M and(%C)_M at a load ratio R=0.05.High△K_(th)valuesare obtained by obvious crack closing ability causedby high roughness of the fractured surfaces.
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| 收稿时间： | 1992-07-28 |
Fatigue Crack Propagation in Plain Carbon Dual-phase Steel |
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| LEI Tingquan LIN Guangyong Dept.of Metals and Technology,Harbin Institute of Technology,Harbin,China To whom correspondence should be addressed.Fatigue Crack Propagation in Plain Carbon Dual-phase Steel[J].Journal of Materials Science & Technology,1992,8(4):249-254. |
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| Authors: | LEI Tingquan LIN Guangyong Deptof Metals and Technology Harbin Institute of Technology Harbin China To whom correspondence should be addressed |
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| Abstract: | 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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| Keywords: | fatigue crack propagation dualphase steels volume fraction of V_m |
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