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Welding of martensitic stainless steels with high resilience for hydrodynamic components of innovative ships: Comparison between traditional and innovative welding technologies [Saldatura di acciai inossidabili martensitici ad elevata resilienza per compo

TitleWelding of martensitic stainless steels with high resilience for hydrodynamic components of innovative ships: Comparison between traditional and innovative welding technologies [Saldatura di acciai inossidabili martensitici ad elevata resilienza per compo
Publication TypeArticolo su Rivista peer-reviewed
Year of Publication2012
AuthorsBarbieri, Giuseppe, Cognini Francesco, Moncada M., and Morabito G.
JournalRivista Italiana della Saldatura
Volume64
Pagination21-35
ISSN00356794
KeywordsAustenitic, comparisons, Economic benefits, Filler materials, High mechanical strength, Hydrodynamic component, innovation, Laser beam welding, Lifting surfaces, Martensitic stainless steel, Mechanical properties, MMA welding, Post weld heat treatment, Process parameters, Shipbuilding, Ships, Shipyards, Stainless steel, Strength of materials, Weldability, Welding, Welding procedure specifications, Welding technology
Abstract

Designers of innovative ships must consider the adoption of unusual materials. We make a comparison between traditional (SMAW) and innovative (LBW, EBW) welding technologies in order to demonstrate their feasibility in shipbuilding. The 13Cr4Ni martensitic stainless steel with improved toughness has been chosen by Rodriquez Cantieri Navali for the construction of submerged lifting surfaces in innovative hydrofoils because of its high mechanical strength. Welding Procedure Specifications with austenitic filler materials have been developed to overcome the need of expensive post-weld heat treatments on large sized components: a limited decrease in strength is compensated by substantial economic benefits. Extensive experiments demonstrated superiority of EBW on LBW in terms of quality and robustness despite the intrinsic advantages of the latter technique in a shipbuilding environment.

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Citation KeyBarbieri201221