SciELO - Scientific Electronic Library Online

vol.18 issue1Evaluation of residual stress field by x-ray diffraction using the sen²ψ method on E308-L stainless steel weld overlaysProposal of roadmap for determining the variables of pulsed TIG welding process applied to welding of thin plates author indexsubject indexarticles search
Home Pagealphabetic serial listing  

Services on Demand




Related links


Soldagem & Inspeção

Print version ISSN 0104-9224


HENKE, Sérgio L.; PAREDES, Ramon S. C.  and  CAPRA, André R.. Delta-ferrite development in weld and HAZ produced by pulsed plasma arc welding in a supermartensitic stainless steel. Soldag. insp. [online]. 2013, vol.18, n.1, pp.57-63. ISSN 0104-9224.

The objective of this study was to investigate the effect of pulsed plasma welding on the distribution and amount of delta ferrite which is considered an undesirable phase in a supermartensitic stainless steel. For such weld beads have been obtained by melting the surface of a sample of a high-alloy supermartensitic stainless steel using pulsed and conventional current. Microstructural characterization, especially of delta ferrite, was performed by metallographic analysis by means of optical microscopy and scanning electron microscopy. The experiments showed that for the same heat input, pulsed current promoted the formation of delta ferrite in the form of bands along the weld bead and caused a significant reduction of this phase in HAZ as compared to conventional welding.

Keywords : Delta ferrite; Supermartensitic; Pulsed welding.

        · abstract in Portuguese     · text in Portuguese     · Portuguese ( pdf )


Creative Commons License All the contents of this journal, except where otherwise noted, is licensed under a Creative Commons Attribution License