X-Ray Determination of Residual Stresses in Electrodeposited Coatings

Abstract

Experimental and mathematical procedures were developed and tested for x‐ray determination of stress in deposits from data secured with an x‐ray diffractometer. The effects of deposit thickness, variations in elastic modulus, and stresses owing to differential thermal expansion between deposit and basis metal have been evaluated. Work on nickel deposits showed stress can be evaluated to ±6,000 psi and that stress was uniformly distributed over the area irradiated by the x‐ray beam.