Effects of phase transformations on residual stresses in welding of stainless steels
2007 (English)In: International Journal of Offshore and Polar Engineering, ISSN 1053-5381, Vol. 17, no 2, 145-151 p.Article in journal (Refereed) Published
In this investigation, we investigate the effects of solid state phase transformation on residual stresses in welding super-martensitic stainless steels, using the Satoh experimental test approach. The results obtained clearly demonstrate that the austenite-to-martensite phase transformation has remarkable effects on the final tensile residual stress level, and stresses as low as 70 to 170 MPa were found, depending on the weld thermal program. These results may imply that unnecessary conservatism is often used when assuming residual stresses to be of the same order as the base metal yield strength.
Place, publisher, year, edition, pages
2007. Vol. 17, no 2, 145-151 p.
welding, weld simulation, residual stresses, start temperature for martensite transformation, supermartensitic 13% Cr stainless steel, superduplex 25% Cr steel, 25% Cr superduplex wire
IdentifiersURN: urn:nbn:se:kth:diva-16703ISI: 000247296000010OAI: oai:DiVA.org:kth-16703DiVA: diva2:334746
QC 201005252010-08-052010-08-05Bibliographically approved