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Content available Effect of Shot Peening With Glass Microspheres on the Fatigue Behavior of a Low Carbon Steel
de Lacerda J. C., Pereira I. R., Costa J. M. G., Pinto J. S., Souza H. F. M., Fonseca M. A.
Archives of Metallurgy and Materials
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2019
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Vol. 64, iss. 4
1513--1518
EN
The present work has the objective of studying the effect of shot peening with glass microspheres on SAE 1020 steel in its resistance to fatigue. Fatigue tests were carried out by rotary bending with load control and loading on balance in specimens with and without shot peening. A rotation speed of approximately 750 rpm (12.5 Hz) was employed in the fatigue tests. Vickers microhardness tests were performed in order to verify the surface hardening produced by shot peening with glass microspheres. Analysis of the steel surface and fatigue fractures was performed using scanning electron microscopy (SEM). Fatigue tests were performed in order to obtain S-N curves (Wöhler curves). It was observed that shot peening with glass microspheres improved the fatigue strength of the steel at high cycle.
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