Implications of changes in the post-weld heat treatment requirements on properties of steels and welds for offshore structures
- TWI, Cambridge (United Kingdom). Structural Integrity Dept.
The reductions in the post-weld heat treatment temperatures and hold times proposed in revisions to pressure vessel (BS5500) and offshore steel (EN 10225) codes are considered in relation to their effects on resistance to fracture initiation. A review of the effects of the proposed changes on the mechanical properties and residual stresses in medium strength C-Mn steels and welds is described. It is concluded that the proposed reductions in temperature and hold time will, in general, minimize the changes in mechanical properties which would occur under current PWHT procedures. However, the levels of residual stresses will be significantly higher, and this will reduce the margin against fracture initiation.
- OSTI ID:
- 403623
- Report Number(s):
- CONF-9606279-; ISBN 0-7918-1492-0; TRN: IM9651%%658
- Resource Relation:
- Conference: 14. international conference on offshore mechanics arctic engineering (OMAE), Florence (Italy), 16-20 Jun 1996; Other Information: PBD: 1996; Related Information: Is Part Of OMAE 1996 -- Proceedings of the 15. international conference on offshore mechanics and arctic engineering. Volume 3: Materials engineering; Salama, M.M. [ed.] [Conoco Inc., Ponca City, OK (United States)]; Toyoda, Masao [ed.] [Osaka Univ. (Japan)]; Liu, S. [ed.] [Colorado School of Mines, Golden, CO (United States)]; Santos, J.F. dos [ed.] [GKSS, Geesthacht (Germany)]; Stacey, A. [ed.] [Health and Safety Executive, London (United Kingdom)]; Tubby, P.; Pisarski, H. [eds.] [TWI, Cambridge (United Kingdom)]; PB: 579 p.
- Country of Publication:
- United States
- Language:
- English
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