Effect of the inclined edge notches on the fatigue-fracture behavior of soft annealed and quenched AISI O2 tool steel
Transactions of the Indian Institute of Metals, vol.65, no.4, pp.399-404, 2012 (SCI-Expanded, Scopus)
- Publication Type: Article / Article
- Volume: 65 Issue: 4
- Publication Date: 2012
- Doi Number: 10.1007/s12666-012-0144-7
- Journal Name: Transactions of the Indian Institute of Metals
- Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
- Page Numbers: pp.399-404
- Keywords: Edge notches, Fatigue-fracture behavior, Heat treatment, Kink, Tool steel
- Uşak University Affiliated: No
Abstract
In this research, the effects of edge notches with inclined angles on the fatigue-fracture behavior and fatigue life between soft annealed and hardened AISI O2 tool steel (DIN 1.2842) were investigated. Hardening was provided by the quenching and cooling by oil. A rotating bending fatigue machine was used to determine the fatigue strength. It was found that edge notches caused a reduction in the fatigue strength and fatigue life for soft annealed AISI O2 steel, but this reduction transformed to an increase for quenched AISI O2 steel. In addition to this, kink occurred on the all inclined edge notches for both materials. After fatigue tests, the fracture surfaces, specimen surface microstructures and specimen center microstructures were observed by scanning electron microscopy. © Indian Institute of Metals 2012.