Table of Contents
Textures and Microstructures
Volume 33, Issue 1-4, Pages 231-242

Measurements of Residual Stresses in a Shape Welded Steel Tube by Neutron and X-Ray Diffraction

1MPA, Stuttgart University, Germany
2lnstitute for Nuclear Research of RAS, Moscow, Russia
3Fraunhofer-Institute for Nondestructive Testing, EADQ, Dresden, Germany
4Frank Laboratory of Neutron Physics, JINR, Moscow Region, Dubna 141980, Russia

Copyright © 1999 Hindawi Publishing Corporation. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


Shape welding of a ferritic steel layer on an austenitic steel tube is used to build compressive stresses on its outer surface, and as a result, suppress stress corrosion. Investigations of residual stresses in such bi-layer tubes are important for developing optimal welding techniques. The neutron and X-ray diffraction methods were used to analyze the stress behavior around the welded region on the tube. To this end, strain components in the radial, axial and tangential directions were measured across the weld. The results are compared to the data obtained by the destructive turning out technique and theoretical predictions by the finite element method.