Residual Stress Analysis of Stellite-Coated Forging Tool Steel Using Synchrotron Radiation Diffraction

Abstract:

Synchrotron X-ray diffraction is reliable to measure residual stresses and characterize existing phases close to substrate/coating interface. In the present study, we focus on the cobalt-alloys coating deposited on stainless steel forging tools via Plasma Transfer Arc (PTA) process. Forging tools always work in high temperature conditions. Since fatigue crack is often detected near to the interface, we used synchrotron radiation to characterize residual stress profiles both in the substrate and coating sides. Also, we defined phases inside diluted substrate layers and in the stellite coating using a Rietveld refinement.

• Periodical: Materials Science Forum (Volumes 706-709)
• Pages: 1696-1701
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.706-709.1696
• Online since: January 2012
• Authors: M.Y. Toumi, A. Benmarouane, Herve Bonnefoy, Thomas Buslaps, Alain Lodini, Veijo Honkimäki
• Keywords: Cobalt, Interface, Residual Stress, Synchrotron

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