Influence of Nonmetallic Inclusion on Fatigue Strength of Carburized and Shot Peened Gear Steel

Author:  H. Kagawa, M. Ishiguro, and S. Hisamatsu
Source:  Conf Proc: ICSP-5, (p.126-133)
Doc ID:  1993064
Year of Publication:  1993
Abstract:  
In order to clarify influences of nonmetallic inclusion on fatigue strength of carburized and shot peened gear steel, bending fatigue tests and pitting fatigue tests were carried out on a clean steel with oxyeng content of 9ppm and a conventional steel with oxygen content of 20ppm, respectively. As a result, it was revealed that the clean steel showed higher fatigue strength than the conventional steel in both of the fatigue tests. The test result was discussed from a view point of the size and the density of nonmetallic inclusion.