Residual Stresses Measurements by Means of X-Ray Diffraction on Electron Beam Welded Joints and Laser Hardened Surfaces
In this study x-ray diffraction techniques are applied to the evaluation of residual stresses induced by two metallurgical processes: electron beam welding (EBW) and laser surface hardening (LSH) on low alloy steel of aeronautical interest. This technique is also shown to be capable of measuring great stress gradients and microstructural strains wich can be correlated to the micro hardness. In particular residual stresses distribution is measured with high resolution on AISI 4140 steel surfaces subjected to laser hardening consisting of two succesive and partially overlapping tracks and on AISI 9310 subjected to EBW.
KeywordsResidual Stress Electron Beam Welding Residual Stress Measurement Laser Hardening Residual Stress Profile
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- 1.M. Regina et al. The non destructive measurements of residual stresses by means of x-rays diffractometry, VIII congr. nat. AIDAA, Sept. 1985, Torino, ItalyGoogle Scholar
- 2.G. Nicolas et al. , Application du laser de puissance au traitement de surface d’alliage metallique, Memoires et etudes scientifiques-Revue de metallurgie, Nov.1984Google Scholar
- 3, Residual stress measurements by x-rays diffraction.SAE J784a, SAE Inc., 1971Google Scholar