Akademik Veri Yönetim Sistemi
International Conference on Advanced Materials Science and Engineering and High Tech Device Applications, Ankara, Türkiye, 24 - 26 Ekim 2024, ss.1-5
In this study, effects of shot peening process applied to samples were
produced from 17-4 PH H1150 stainless steel material on LCF life were experimentally
searched. Shot peening was applied at densities of 3A, 4.5A, and 6A, and
coverage rates of 100%, 200%, and 300%. Strain-controlled LCF tests were
performed. Microstructures of samples were examined and microhardness values
were obtained and commented. Surface roughness of samples were measured and
compared. According to the study, it was determined that shot peening increased
the LCF life, compared to the unpeened sample, by 13.7%, 44.6%, and 93.1% under
100%, 200%, and 300% covarage, respectively at 3A intensity; by 18.4%, 75.2%,
and 89.2% under 100%, 200%, and 300% coverage, respectively at 4.5A intensity;
and by 36.3%, 62.3%, and 62.8% under 100%, 200%, and 300% coverage,
respectively at 6A intensity. Furthermore, the analysis conducted according to
the applied Taguchi experimental design revealed that the effect of shot
peening coverage on fatigue life is greater than the effect of shot peening
intensity. It has been demonstrated, supported by experimental findings, that
shot peening provides improvement in the microstructure.