Comparison of Electronic Speckle Laser Interferometry Hole-Drilling and X-ray Diffraction Techniques for Determination of Residual Stresses in the Heat Treated Steels



Carburizing is widely used to improve wear resistance and fatigue life of high duty machine parts. Fatigue performance of the carburized components is greatly dependent on the residual stress state in the surface layer. The aim of this paper is to measure the depth profiles of residual stresses in the carburized steels by electronic speckle laser interferometry (ESPI) assisted hole-drilling, and to compare the results with those measured by X-ray diffraction technique. To comprehend the differences in the residual stress state, the low-C steel components were carburized, and then, tempered in the range of 180–600 \(^{\circ }\)C. Microstructural investigations and hardness measurements were also conducted. The results obtained from both techniques gave identical results, and showed that the beneficial compressive residual stresses exist at the surface after carburizing, and their magnitudes decrease with increasing tempering temperature. It was concluded that ESPI assisted hole-drilling, with optimized drilling and stress calculation parameters, is suitable for determining the residual stress state of the carburized and tempered steels.


Carburizing Residual stress Electronic speckle laser interferometry X-ray diffraction 



The authors would like to thank Kemal Sürücü and Arda Güleş (Türk Traktör), Dr. Caner Şimşir and Zeynep Öztürk (Atılım Univ. Metal Forming Excellence Center).


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© Springer Science+Business Media New York 2017

Authors and Affiliations

  1. 1.Special Processes and Test Technologies DepartmentROKETSAN Missiles Industries Inc.AnkaraTurkey
  2. 2.Department of Metallurgical and Materials EngineeringMiddle East Technical UniversityAnkaraTurkey
  3. 3.Welding Technology and Non-Destructive Testing Research/Application CenterMETUAnkaraTurkey

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