Authors: Yaghi, A. H.¹; Hyde, T. H.¹; Becker, A. A.¹; Sun, W.¹; Hilson, G.²; Simandjuntak, S.²; Flewitt, P. E. J.²; Pavier, M. J.²; Smith, D. J.²

Source: Energy Materials: Materials Science and Engineering for Energy Systems, Volume 4, Number 3, September 2009 , pp. 124-132(9)

Publisher: Maney Publishing

Included in the following Connect Compilations:

• Volume 4, Number 3

Abstract:

Residual stresses in a circumferentially butt welded steel pipe have been measured and numerically predicted. The pipe, containing the circumferential weld, has an outer diameter of 290 mm and a wall thickness of 55 mm, typical of components in power generation plants. An axisymmetric thermomechanical finite element (FE) simulation has been performed to obtain the residual stress field induced by the fusion welding of the pipe, taking solid state phase transformation effects into account and using temperature dependent material property data. Residual stresses have been measured using the X-ray diffraction and deep hole drilling techniques. Good correlation has been demonstrated with the predictions of the FE model. The paper demonstrates that a mixed experimental and numerical approach is useful for determining the residual stress distribution in welded joints.

Keywords: MARTENSITE; RESIDUAL STRESS; P91 STEEL WELDING

Document Type: Research Article

DOI: http://dx.doi.org/10.1179/1748924510Y.0000000001

Affiliations: 1: University of Nottingham, Nottingham NG7 2RD, UK 2: University of Bristol, Bristol BS8 1TH, UK

Publication date: 2009-09-01

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