Mechanical and thermal processing of wire-arc additively deposited stainless steel

Silva, Carlos; Pragana, João; Bragança, Ivo; Martins, Paulo

http://hdl.handle.net/10400.21/17871

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Authors

Silva, Carlos

Pragana, João

Bragança, Ivo

Martins, Paulo

Abstract(s)

Mechanical and thermal processing of wire-arc additively deposited stainless steel is investigated with the purpose of improving its microstructure, surface morphology, formability, and stress response. Microscopy helps identifying the processing conditions that permit full recrystallization of the as-built columnar microstructure. Combination with strain loading paths, topography and fractography in tensile tests show that mechanical processing consisting of 20 % thickness reduction followed by annealing at 1100 °C under 4 h eliminates anisotropy and increases the fracture forming limits by 30 %. The work is a step forward to consolidate the hybridization of wire-arc additive manufacturing with metal forming as an alternative to conventional manufacturing.

Keywords

hybrid manufacturing additive manufacturing mechanical and thermal processing

URI

http://hdl.handle.net/10400.21/17871

Citation

Silva CMA, Pragana JPM, Bragança IMF, Martins PAF. Mechanical and thermal processing of wire-arc additively deposited stainless steel. CIRP Annals. 2024; 73(1): 068. https://doi.org/10.1016/j.cirp.2024.04.068.