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Tensile properties of laser powder bed fusion built JBK-75 austenitic stainless steel

Neikter, M. ; Bhaskar, P. ; Singh, S. ; Kadoi, K. ; Lyphout, C. ; Svahn, F. ; Pederson, R.

Materials science & engineering. A, Structural materials : properties, microstructure and processing, 2023-05, Vol.874, p.144911, Article 144911 [Periódico revisado por pares]

Elsevier B.V

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Título:
Tensile properties of laser powder bed fusion built JBK-75 austenitic stainless steel
Autor: Neikter, M. ; Bhaskar, P. ; Singh, S. ; Kadoi, K. ; Lyphout, C. ; Svahn, F. ; Pederson, R.
Assuntos: Additive manufacturing process ; Anisotropy ; Austenitic stainless steel ; Conventional manufacturing ; Design of experiment ; Design of experiment (DOE) ; Design of experiments ; Hot isostatic pressing ; JBK-75 ; Laser powder bed fusion (PBF-LB) ; Laser powders ; Material wastage ; Net-shaping ; Porosity ; Powder bed ; Process parameters ; Production Technology ; Produktionsteknik ; Tensile properties ; Tensile strength ; Tensile testing ; Textures
É parte de: Materials science & engineering. A, Structural materials : properties, microstructure and processing, 2023-05, Vol.874, p.144911, Article 144911
Descrição: Laser powder bed fusion (PBF-LB) is an additive manufacturing (AM) process that has several advantages to conventional manufacturing, such as near net-shaping capabilities and reduced material wastage. To be able to manufacture a novel material, however, one needs to first optimize the process parameters, to decrease porosity content as low as possible. Therefore, in this work the process parameters of PBF-LB built JBK-75 austenitic stainless steel, and its influence on porosity, microstructure, and hardness have been investigated. The least amount of porosity was found by using 132 W laser power, 750 mm/s scan speed, layer thickness 30 μm, and 0.12 mm hatch distance. These process parameters were then used to manufacture material for tensile testing, to investigate the tensile properties of PBF-LB built JBK-75 and potential anisotropic behavior. Hot isostatic pressing (HIP) was also performed in two sets of samples, to investigate the effect of pore closure on the tensile properties. The ultimate tensile strength (UTS) for the un-HIPed specimens was 1180 (horizontally built) and 1110 (vertically built) MPa. For the HIPed specimens, it was 1160 (horizontally built) and 1100 (vertically built) MPa. The anisotropic presence was explained by the presence of texture, with a multiple of random distribution (MRD) up to 4.34 for the {001} planes, and defects.
Editor: Elsevier B.V
Idioma: Inglês

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Tensile properties of laser powder bed fusion built JBK-75 austenitic stainless steel

Neikter, M. ; Bhaskar, P. ; Singh, S. ; Kadoi, K. ; Lyphout, C. ; Svahn, F. ; Pederson, R.

Elsevier B.V

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