Influence of the GMAW transfer mode on the mechanical behaviour and corrosion resistance of the 316L-2205 dissimilar weld

Sánchez-Cruz, T. del N. J.; López-Morelos, V. H.; Curiel-López, F. F.; González–Sánchez, J.; Ruiz, A.; Granados-Becerra, H.

doi:10.1557/s43580-023-00682-3

MRS Advances

2023

DOI: 10.1557/s43580-023-00682-3

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Influence of the GMAW transfer mode on the mechanical behaviour and corrosion resistance of the 316L-2205 dissimilar weld

T. del N. J. Sánchez-Cruz,

V. H. López-Morelos,

F. F. Curiel-López

et al.

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2024

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Effect of Welding Current on Corrosion Resistance of Heat-Affected Zones of HDR Duplex Stainless Steel

Liu,

Hu,

Liu

2024

Materials

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This paper examines the corrosion behavior of the welding heat-affected zone (HAZ) of HDR (high chromium, duplex, corrosion-resistant) duplex stainless steel, which currently faces corrosion-related challenges in marine seawater systems. The corrosion behavior of the HAZ was studied using microstructure analysis, polarization curve experiments, and double-loop potentiodynamic reactivation experiments. The results show that (1) the covering welding current can promote the formation of austenite in the HAZ, and that the covering welding current has no strict correspondence with the formation of austenite; (2) increasing the welding gap properly can facilitate the formation of austenite; (3) increasing the covering welding current enhances the material’s pitting resistance, and a covering welding current of 70 A, coupled with a covering welding current of 100 A, represents a reasonable choice in terms of achieving a stronger pitting resistance; (4) in terms of intergranular corrosion resistance, increasing the covering welding current is not conducive to the intergranular corrosion resistance of the material, as the covering current will promote the precipitation of the secondary phase at the grain boundary, thus reducing its intergranular corrosion resistance; and (5) reducing the welding current appropriately contributes to improving the stability of the grain boundary.

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Effect of Welding Current on Corrosion Resistance of Heat-Affected Zones of HDR Duplex Stainless Steel

Liu,

Hu,

Liu

2024

Materials

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show abstract

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Influence of the GMAW transfer mode on the mechanical behaviour and corrosion resistance of the 316L-2205 dissimilar weld

Cited by 1 publication

References 15 publications

Effect of Welding Current on Corrosion Resistance of Heat-Affected Zones of HDR Duplex Stainless Steel

Effect of Welding Current on Corrosion Resistance of Heat-Affected Zones of HDR Duplex Stainless Steel

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