Cyclic stress response and fatigue behavior of Cu added ferritic steels
作者： T. Yokoi , M. Takahashi , N. Maruyama , M. Sugiyama
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摘要: Steels in which Cu content was altered from 0 to 1.5 mass% were subjected various heat treatments change the state of Cu. Concerning these respective steels, fatigue ratio by a stress controlled test and resistance strain thereof compared. Furthermore dislocation substructure surface defect during after cyclic straining investigated clarify effect on properties. The ratios at 2.0 × 106 loading cycles added steels aged 450 750 degrees C are 0.7, remarkably high as compared with those 550 650 C, free any other conventional whose approximately between 0.5 0.6. as-rolled steel maintains steady hardening until fracture. To contrary treatment shows peak then softening roughness relatively shallow steel. internal typical cell structure but exhibit vein structure.
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