Influence Of Shot Peening On Fatigue Strength Of Aluminum-alloy Parts

Author:  H. Suzuki, Dr. H. Makino, K. Mizuno, T. Tomita
Source:  Conf Proc: ICSP-10 Tokyo, Japan 2008
Doc ID:  2008124
Year of Publication:  2008
Abstract:  
ABSTRACT Considering energy savings and the growing environmental concerns, light weight components are increasingly becoming popular in various fields of engineering applications. The use of light-alloy parts has been a common approach to meet the above requirements. However, most light-alloy parts cannot be widely used because of their short fatigue life. Improvement of fatigue life of light-alloy parts is imperative. One way to improve fatigue life is by shot peening which is currently used to produce automobile gears and springs among other parts. However, in case of light alloys, only shot blast treatment is used during surface finishing process to improve the surface condition and perform painting reprocessing. Shot peening is seldom used to improve fatigue life. In this study, shot peening of aluminum-alloy (AC4CH) is performed under different peening conditions and the effects in improvement of fatigue life are investigated. KEY WORDS Fatigue Strength, Aluminum-Alloy Casting, Shot Peening