fe5b98b8a5-p-1829.pdf - The generation of residual stresses in hard machining has been investigated by 1.2 many researchers[Field 1971 Brinksmeier 1982

fe5b98b8a5-p-1829.pdf - The generation of residual stresses...

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4 The generation of residual stresses in hard machining has been investigated by many researchers [Field 1971, Brinksmeier 1982, Mittal 1998, Liu 1998, and Jacobson 2002]. It is reported that residual stresses on the machined surface are known to influence the service quality of the component, such as fatigue life and, tribological properties, and distortion. The profile (magnitude and depth) of the residual stresses can greatly influence the fatigue life of a component. It is believed that compressive residual stresses are more favorable for rolling contact fatigue life than tensile residual stresses. Shot peening is a cold working process in which the surface of a part is bombarded with millions of small spherical media, called “shot”, which are made of steel, glass or ceramic. It is known that after the peening treatment a layer with compressive residual stress will present under the surface. The compressive residual stress underneath increases the fatigue life and wear resistance of, and prevents stress corrosion cracking and fretting fatigue of the treated components.
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