Journal
SURFACE & COATINGS TECHNOLOGY
Volume 204, Issue 12-13, Pages 1947-1951Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.surfcoat.2009.09.052
Keywords
316L stainless steel; Plasma nitriding; Residual stresses; Fatigue life; Lattice rotations
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AISI 316L austenitic stainless steel is widely used in nuclear and chemical industries for structural components that are submitted to cyclic deformation and stresses. The influence of low temperature (similar to 400 degrees C) plasma nitriding on the crystallographic texture and fatigue durability of 316L has been investigated. Electron back-scattering diffraction measurements show that nitriding enhances the < 001 > and < 111 > texture components while the < 110 > one vanishes. Series of fatigue tests carried out in air at room temperature in the low cycle fatigue range show a significant improvement of the fatigue life. Results are discussed taking into account the residual compressive stresses in the nitrided layer. (C) 2009 Elsevier B.V. All rights reserved.
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