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dc.contributor.author
Zappa Maidana, Norberto Sebastián
dc.contributor.author
Svoboda, Hernán Gabriel
dc.contributor.author
Ramini, Mabel
dc.contributor.author
Surian, Estela Silvia
dc.contributor.author
de Vedia, Luis Alberto
dc.date.available
2023-04-25T15:50:46Z
dc.date.issued
2012-03
dc.identifier.citation
Zappa Maidana, Norberto Sebastián; Svoboda, Hernán Gabriel; Ramini, Mabel; Surian, Estela Silvia; de Vedia, Luis Alberto; Improving supermartensitic stainless steel weld metal toughness: eliminating ferrite, maximizing austenite, and softening martensite through PWHT markedly improved toughness with respect to the as-welded condition; American Welding Society; Welding Journal; 91; 3; 3-2012; 83-90
dc.identifier.issn
0043-2296
dc.identifier.uri
http://hdl.handle.net/11336/195289
dc.description.abstract
Welding of supermartensitic stainless steel plays a crucial role in fabricated components, influencing their toughness, weldability and resistance to sulphide stress cracking. Post weld heat treatment adjusts the final properties of the weldments, bearing on microstructural evolution. The objective of this work was to maximize all weld metal toughness by microstructural modifications achieved by means of post-weld heat treatments (PWHTs). Two all-weld metal test coupons were prepared according to standard ANSI/AWS A5.22-95, using a 1.2 mm diameter tubular metal-cored wire under Ar-5%He and Ar-18%CO2 gas shielding mixtures in the flat position, with a nominal heat input of 1.6 kJ mm-1. Single tempering, solution annealing, solution annealing plus single tempering and solution annealing plus double tempering treatments were carried out at different times and temperatures. All-weld metal chemical composition analysis, metallurgical characterization, hardness and tensile property measurements and Charpy-V tests were carried out. It was found that eliminating ferrite, maximizing austenite and softening martensite through PWHT, improved toughness up to almost three times with respect of the as-welded condition, for both shielding gases used. When welding under Ar-18%CO2 shielding gas, it was detected a) higher all-weld metal contents of C, O and N and slightly lower contents of Mn, Si, Cr, Ni, Mo, Cu; this fact produced slightly lower both ferrite and austenite contents in as-welded condition and b) lower toughness and ductility, and higher strength and hardness, regarding the samples welded under Ar-5%He mixture.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
American Welding Society
dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
Super Martensitic Stainless Steel
dc.subject
Welding Procedre
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Post Welded Heat Treatmet
dc.subject
Toughness
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Ingeniería de los Materiales
dc.subject.classification
Ingeniería de los Materiales
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INGENIERÍAS Y TECNOLOGÍAS
dc.title
Improving supermartensitic stainless steel weld metal toughness: eliminating ferrite, maximizing austenite, and softening martensite through PWHT markedly improved toughness with respect to the as-welded condition
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2023-04-24T12:56:31Z
dc.journal.volume
91
dc.journal.number
3
dc.journal.pagination
83-90
dc.journal.pais
Estados Unidos
dc.journal.ciudad
Miami
dc.description.fil
Fil: Zappa Maidana, Norberto Sebastián. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de Lomas de Zamora. Facultad de Ingeniería; Argentina
dc.description.fil
Fil: Svoboda, Hernán Gabriel. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad de Buenos Aires. Facultad de Ingeniería; Argentina
dc.description.fil
Fil: Ramini, Mabel. Universidad Tecnológica Nacional; Argentina
dc.description.fil
Fil: Surian, Estela Silvia. No especifíca;
dc.description.fil
Fil: de Vedia, Luis Alberto. Universidad de Buenos Aires. Facultad de Ingeniería; Argentina
dc.journal.title
Welding Journal
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://www.aws.org/publications/page/research-papers-2012
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