Combined effects of abrasive type and cooling mode on fatigue resistance of AISI D2 ground surface

• Published in: International journal of fatigue Vol. 138; pp. 105665 - 14
• Main Authors: Ben Fathallah, Brahim, Braham, Chedly, Sidhom, Habib
• Format: Journal Article
• Language: English
• Published: Kidlington Elsevier Ltd 01.09.2020; Elsevier BV
• Subjects: Abrasive wheels; AISI D2; Aluminum oxide; Chromium molybdenum vanadium steels; Compressive properties; Controlled grinding; Cooling effects; Cryogenic cooling; Fatigue; Fatigue cracks; Fatigue life; Fatigue limit; Fatigue strength; Grinding wheels; High cycle fatigue; Materials fatigue; Micro-cracks; Microcracks; Residual stress; Sol-gel processes; Tool steels; Controlled grinding; Micro-cracks; Fatigue; AISI D2; Residual stress
• ISSN: 0142-1123; 1879-3452
• DOI: 10.1016/j.ijfatigue.2020.105665

•Controlled grinding (CG) using Sol-gel abrasive and cryogenic cooling improve the ground surface integrity of AISI D2.•CG generates compressive residual stresses and reduces the density of thermal micro-cracks.•The fatigue life of ground surface using CG is three times higher than conventional grinding.•The Dang Van multiaxial fatigue criterion was used to validate and predict the combined benefit effects on the high cycle fatigue limit of AISI D2 ground surface. This paper explores the benefits of the controlled grinding surface of the AISID2 steel. The effect of Sol-gel abrasive wheel and cryogenic cooling mode on surface integrity has been proved. These results lead to the higher level of compressive residual stresses and lower density of micro-cracks compared to combination of Al2O3 abrasive wheel and soluble oil cooling mode. Using controlled grinding, the fatigue life has been improved to three time. The Dang Van multiaxial fatigue criterion was used to predict the combined beneficial controlled grinding effects on the high cycle fatigue limit of AISI D2 tool steel.