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Title: Effect of pressure and shielding gas on the microstructure of hyperbaric metal cored GMAW welds down to 111 bar

Abstract

The microstructural evolution of hyperbaric C-Mn weld metals was studied by means of bead-on-plate welds deposit with GMAW process using a commercial metal cored wire. The welding was carried out in the flat position in the range of 51 bar to 111 bar with He+ CO{sub 2} as shielding gas, which CO{sub 2} content varied from 0.1% to 0.8 %. The microstructures were quantitatively analyzed by optical microscopy to evaluate the amount of constituents according to the IIW/IIS terminology. The results showed that all weld metals presented great amounts of acicular ferrite and a stronger influence of pressure on microstructure compared to the influence of the shielding gas.

Authors:
 [1];  [2];  [3]
  1. CEFET, Rio de Janeiro (Brazil). Mechanical Engineering Dept.
  2. Petrobras/CENPES, Rio de Janeiro (Brazil)
  3. GKSS Forschungszentrum Geesthacht GmbH (Germany)
Publication Date:
OSTI Identifier:
205443
Report Number(s):
CONF-950695-
ISBN 0-7918-1309-6; TRN: IM9615%%223
Resource Type:
Conference
Resource Relation:
Conference: International conference on offshore mechanics and arctic engineering, Copenhagen (Denmark), 18-22 Jun 1995; Other Information: PBD: 1995; Related Information: Is Part Of OMAE 1995 -- Proceedings of the 14. 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., Suita, Osaka (Japan)]; Liu, S. [ed.] [Colorado School of Mines, Golden, CO (United States)]; Santos, J.F. dos; Kocak, M. [eds.] [GKSS, Geesthacht (Germany)]; Patterson, E.A. [ed.] [Univ. of Sheffield (United Kingdom)]; Berge, S. [ed.] [Univ. of Trondheim (Norway)]; Stacey, A. [ed.] [Health and Safety Executive, London (United Kingdom). Offshore Safety Div.]; PB: 600 p.
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; 42 ENGINEERING NOT INCLUDED IN OTHER CATEGORIES; WELDED JOINTS; MICROSTRUCTURE; OFFSHORE PLATFORMS; STEELS; SHIELDED METAL-ARC WELDING; PIPELINES; CHEMICAL COMPOSITION; UNDERWATER OPERATIONS; REMOTE CONTROL; RESEARCH PROGRAMS; MATERIALS TESTING

Citation Formats

Jorge, J C.F., Santos, V.R. dos, and Santos, J.F. dos. Effect of pressure and shielding gas on the microstructure of hyperbaric metal cored GMAW welds down to 111 bar. United States: N. p., 1995. Web.
Jorge, J C.F., Santos, V.R. dos, & Santos, J.F. dos. Effect of pressure and shielding gas on the microstructure of hyperbaric metal cored GMAW welds down to 111 bar. United States.
Jorge, J C.F., Santos, V.R. dos, and Santos, J.F. dos. 1995. "Effect of pressure and shielding gas on the microstructure of hyperbaric metal cored GMAW welds down to 111 bar". United States.
@article{osti_205443,
title = {Effect of pressure and shielding gas on the microstructure of hyperbaric metal cored GMAW welds down to 111 bar},
author = {Jorge, J C.F. and Santos, V.R. dos and Santos, J.F. dos},
abstractNote = {The microstructural evolution of hyperbaric C-Mn weld metals was studied by means of bead-on-plate welds deposit with GMAW process using a commercial metal cored wire. The welding was carried out in the flat position in the range of 51 bar to 111 bar with He+ CO{sub 2} as shielding gas, which CO{sub 2} content varied from 0.1% to 0.8 %. The microstructures were quantitatively analyzed by optical microscopy to evaluate the amount of constituents according to the IIW/IIS terminology. The results showed that all weld metals presented great amounts of acicular ferrite and a stronger influence of pressure on microstructure compared to the influence of the shielding gas.},
doi = {},
url = {https://www.osti.gov/biblio/205443}, journal = {},
number = ,
volume = ,
place = {United States},
year = {Sun Dec 31 00:00:00 EST 1995},
month = {Sun Dec 31 00:00:00 EST 1995}
}

Conference:
Other availability
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