Study of the thermal diffusivity variation in thin duplex steel plates welded by GTAW process
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This study describes the thermal diffusivity of thin duplex steel plates in the thickness
direction measured using the laser-flash method after welding. The work reports the experimental
efforts in recording temperature profiles of the grade UNS S32304 duplex steel during autogenous
welding. The butt weld autogenous joints were carried out by the GTAW (gas tungsten arc welding)
process with either argon or argon - 2% nitrogen atmospheres. The amount of nitrogen in the heat
affected regions, after welding, was measured and correlated with the variation of the thermal
diffusivity of the studied material. The temperature profiles were obtained using k-type
thermocouples connected to a digital data acquisition system. Different thermal cycles and thermal
diffusivity values were observed in the heat-affected zone (HAZ) for both samples. In the solidified
zone (SZ) was observed similar increase of the thermal diffusivity values for the plates welded with
pure argon and argon plus nitrogen atmosphere.
Como referenciar
BETINI, EVANDRO G.; GOMES, MAURILIO P.; MUCSI, CRISTIANO S.; LUZ, TEMISTOCLES de S.; ORLANDO, MARCOS T.D.; ROSSI, JESUALDO L. Study of the thermal diffusivity variation in thin duplex steel plates welded by GTAW process. Materials Science Forum, v. 930, p. 460-465, 2018. DOI: 10.4028/www.scientific.net/MSF.930.460. Disponível em: http://repositorio.ipen.br/handle/123456789/29273. Acesso em: 31 Dec 2025.
Esta referência é gerada automaticamente de acordo com as normas do estilo IPEN/SP (ABNT NBR 6023) e recomenda-se uma verificação final e ajustes caso necessário.