Phases identification and quantification of AISI 316L produced by laser powder bed fusion
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2022
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BRAZIL MRS MEETING, 20th
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The additive manufacturing process by powder bed fusion (L-PBF) consists of the incidence
of a high power laser on the material that promotes the fusion and later the solidification
layer by layer creating the 3D from a computational model. The main advantage of this
process is the fabrication of objects with complex geometries.
AISI 316L steel is widely used in the additive manufacturing process because it has good
weldability. Due to good corrosion resistance, it is used as a biomaterial for the manufacture
of implants.
The high temperatures achieved in the L-PBF process can cause phase transformation, in
which part of the austenitic phase (FCC) is transformed into the martensitic phase (CCC),
affecting its corrosion resistance.
The purpose of this work is the crystallographic characterization by X-ray diffraction of AISI
316L in powder form and after additive manufacturing by L-PBF.
The powder used in the process was gas atomized, with an average particle diameter of 50
micrometers. The parts were manufactured using the Yb laser (wavelength 1060 nm) with a
scan speed of 1200 mm/s and power of 147 W, 184 W and 211 W.
The powder was characterized by SEM for morphological analysis and by X-ray diffraction
for phase identification and quantification. The manufactured samples were characterized
by SEM and MO, to observe the microstructure, and by X-ray diffraction to identify and
quantify the phases present.
After the additive manufacturing process, with the increase in laser power, it was possible
to observe, in addition to the austenite, the presence of the ferritic phase.
Como referenciar
RIBEIRO, GLEICY de L.X.; CASTRO, RENATO S. de; PORTO, JOAQUIM F.B.; SILVA, LEANDRO S. da; GABRIEL, ANDRE H.G.; SANTOS, LUIS U. dos; TERADA, MAYSA; OLIVEIRA, RENE; COUTO, ANTONIO A. Phases identification and quantification of AISI 316L produced by laser powder bed fusion. In: BRAZIL MRS MEETING, 20th, September 25-29, 2022, Foz do Iguaçu, PR. Abstract... São Carlos, SP: Aptor Software, 2022. Disponível em: http://repositorio.ipen.br/handle/123456789/33554. Acesso em: 06 Jun 2024.
Esta referência é gerada automaticamente de acordo com as normas do estilo IPEN/SP (ABNT NBR 6023) e recomenda-se uma verificação final e ajustes caso necessário.