Combined Neutron and X-Ray Diffraction Analysis for the Characterization of a Case Hardened Disc
The present work has been executed within the framework of the collaborative research center on Distortion Engineering (SFB 570) in order to evaluate the residual stress state of a disc after carburizing and quenching as well as to validate a simulation procedure. The combined use of X-ray and neutron diffraction analysis provided information about the residual stress states in the whole cross section. However, the stress free lattice spacing d0 for the neutron diffraction experiments is problematic and induces systematic uncertainties in the results and the application of a force balance condition to recalculate d0 might be a solution for improving the reliability of the results. Comparison of experimental results with simulation showed that an overall satisfying agreement is reached but discrepancies are still present.
Y. Akiniwa, K. Akita and H. Suzuki
J. Epp et al., "Combined Neutron and X-Ray Diffraction Analysis for the Characterization of a Case Hardened Disc", Materials Science Forum, Vol. 652, pp. 37-43, 2010