CRACK INITIATION IN PLAIN CARBON STEELS DURING STATIC TENSION AND FATIGUE | ||||
| ERJ. Engineering Research Journal | ||||
| Article 12, Volume 23, Issue 3, July 2000, Page 193-203 PDF (544.63 K) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/erjm.2000.71316 | ||||
 View on SCiNiTO | ||||
| Author | ||||
| A.M. ABO El-AINENE | ||||
| Prod. Eng. & Mach. Design Dept., Faculty of Eng., Menoufia University, Shebin El-Kom, Egypt | ||||
| Abstract | ||||
| In this work, the effect of carbon content on static tensile and fatigue crack initiation behaviour was investigated on four different types of carbon steels with nearly equal ferrite grain sizes by the plastic replica method. Static tests and fatigue tests had been performed using the universal testing machine and the rotating bending fatigue testing machine, respectively. Fatigue tests were mainly performed under the stress level larger than the fatigue limit of each material by the same magnitude. Experimental results show that. for tensile tests, the cracks of materials with low carbon content exist in the boundaries beiween pearlite block and ferrite grain or in their neighborhood. On the other hand, those of materials with medium carbon content cracks also exist in pearlite. For fatigue tests, the carbon content of each material affects the crack initiation behaviour under the same stress amplitude for four types of carbon steels, comparing with that under the stress level larger than the fatigue limit of each material by the same magnitude. In addition, the carbon content of steel hardly affec~s the crack propagation behaviour . | ||||
|
Statistics Article View: 78 PDF Download: 141 |
||||
