Investigation of reference samples for residual strain measurements in a welded specimen by neutron and synchrotron x-ray diffraction

Paradowska, AM; Finlayson, TR; Price, JWH; Ibrahim, R; Steuwer, A; Ripley, MI

Investigation of reference samples for residual strain measurements in a welded specimen by neutron and synchrotron x-ray diffraction

Date

2006-11-15

Authors

Publisher

Elsevier

Abstract

In this research, both neutron and synchrotron X-ray diffraction techniques have been used to investigate variations in measured d spacing in two reference samples. The reference “stress-free” samples, a set of cubes and a comb sample, were produced using electro-discharge machining (EDM) to obtain a macro-strain-relieved condition. It is shown that there is a variation in microstructure across the parent metal, heat-affected zone (HAZ) and weld metal. A study of the issues in using the cubes and comb sample to provide reference d0 values for the measurement of residual stress in welding is presented. © 2006 Elsevier B.V.

Keywords

Welding, Residual stresses, Neutron diffraction, Strains, X-ray diffraction, Microstructure

Citation

Paradowska, A., Finlayson, T. R., Price, J. W. H., Ibrahim, R., Steuwer, A., & Ripley, M. (2006). Investigation of reference samples for residual strain measurements in a welded specimen by neutron and synchrotron x-ray diffraction. Paper presented at the Eighth International Conference on Neutron Scattering (ICNS 2005), "Neutrons for structure and dynamics - a new era", Sydney, Australia, 27 November to 2 December 2005. In Physica B: Condensed Matter, 385-386(Part 1), 904-907. doi:10.1016/j.physb.2006.05.245