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Title: Implications of changes in the post-weld heat treatment requirements on properties of steels and welds for offshore structures

Abstract

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.

Authors:
 [1]
  1. TWI, Cambridge (United Kingdom). Structural Integrity Dept.
Publication Date:
OSTI Identifier:
403623
Report Number(s):
CONF-9606279-
ISBN 0-7918-1492-0; TRN: IM9651%%658
Resource Type:
Conference
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
Subject:
36 MATERIALS SCIENCE; 42 ENGINEERING NOT INCLUDED IN OTHER CATEGORIES; OFFSHORE PLATFORMS; WELDED JOINTS; HEAT TREATMENTS; MECHANICAL PROPERTIES; CARBON STEELS; MANGANESE STEELS; CRACK PROPAGATION; HEAT AFFECTED ZONE; STRESS RELAXATION

Citation Formats

Pisarski, H G. Implications of changes in the post-weld heat treatment requirements on properties of steels and welds for offshore structures. United States: N. p., 1996. Web.
Pisarski, H G. Implications of changes in the post-weld heat treatment requirements on properties of steels and welds for offshore structures. United States.
Pisarski, H G. 1996. "Implications of changes in the post-weld heat treatment requirements on properties of steels and welds for offshore structures". United States.
@article{osti_403623,
title = {Implications of changes in the post-weld heat treatment requirements on properties of steels and welds for offshore structures},
author = {Pisarski, H G},
abstractNote = {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.},
doi = {},
url = {https://www.osti.gov/biblio/403623}, journal = {},
number = ,
volume = ,
place = {United States},
year = {Sun Dec 01 00:00:00 EST 1996},
month = {Sun Dec 01 00:00:00 EST 1996}
}

Conference:
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