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An investigation into the effect of various surface treatments on fatigue life of a tool steel
, Article Journal of Materials Processing Technology ; Volume 174, Issue 1-3 , 2006 , Pages 318-324 ; 09240136 (ISSN) ; Ghadbeigi, H ; Sharif University of Technology
2006
Abstract
The effects of nitriding, nitrocarburizing and shot peening on fatigue behavior of AISI D3 cold work tool steel were investigated. Five batches of fatigue specimens were manufactured according to the ASTM E466-96 standard. All specimens were quenched and tempered to a hardness of 50 HRC. One group of specimens was shot peened with an Almen intensity of 16 A, one group was nitrocarburized, one group was gas nitrided by single stage and another group was also nitrided by double stages. Rotating-bending fatigue tests were carried out. Our results showed that nitriding and nitrocarburizing treatments did not have a beneficial effect on the fatigue resistance of D3 tool steel. Fatigue test...