Cracking failure analysis due to fatigue of the Ti-6Al-4V alloy coated with SiC layer and Cr interlayer deposited by magnetron sputtering
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Engineering Failure Analysis
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This work aimed to study the effects of coating a thin film of Silicon Carbide and chromium
interlayer on the fatigue behavior of Ti-6Al-4V alloy and the correspondent failure evaluation. In
the characterization of the layer, the roughness, thickness, and adhesion were determined. Uniaxial fatigue tests were performed under R = 0.1 and the fracture surfaces and corresponding
failure mechanisms were observed and identified by SEM, respectively. In the specimens coated
using the DC source the number of cycles to failure of the fatigue was increased. The fracture
surfaces showed that the crack initiation occurred in the internal regions of the specimens and not
superficially. In this case, the layer remained adhered to the specimens even after the tests,
showing the effectiveness of the film. In specimens coated using the HiPIMS source, the number of
cycles to failure decreased, the cracks were mostly superficial, and the deposited film showed low
adhesion after the tests. It proved to be ineffective, worsening the material fatigue behavior.
Como referenciar
ARBEX, ALEXANDRA A.; REIS, LUIS; ALMEIDA, GISELE F.C.; MERIJ, ABRAO C.; MASSI, MARCOS; COUTO, ANTONIO A. Cracking failure analysis due to fatigue of the Ti-6Al-4V alloy coated with SiC layer and Cr interlayer deposited by magnetron sputtering. Engineering Failure Analysis, v. 150, p. 1-14, 2023. DOI: 10.1016/j.engfailanal.2023.107325. Disponível em: http://repositorio.ipen.br/handle/123456789/34068. Acesso em: 20 Mar 2026.
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.