Influence Of Decarburization On The Fatigue Behaviour Of Shot Peened Spring Steels

Author:  DALAEI, H
Source:  Conf Proc: ICSP-10 Tokyo, Japan 2008
Doc ID:  2008081
Year of Publication:  2008
Abstract:  
ABSTRACT The influence of decarburization on the high cycle fatigue behaviour of shot peened spring steel was investigated. The material studied was a quenched and tempered carbon steel (0.55C, 1.9Si and 0.9 Mn). The specimens were decarburized to depths of 0.40 and 0.50 mm. Shot peening with full coverage then took place, leading to a thickness of the compressed surface layer of about 0.25 mm. The specimens were tested in bending fatigue to fatigue lives in the range Nf = 1