Estudo da nitretação por plasma na fluência da liga TI-6Al-4V
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Tecnologia em Metalurgia, Materiais e Mineração
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The aim of this work is to try to improve the creep resistance of Ti-6Al-4V alloy using a surface treatment by
plasma nitriding. The nitriding was performed by varying parameters such as time, temperature and the nitrogen content
in the gas atmosphere. A nitrogen-argon mixture, with a small part of hydrogen, was used in order to determine the best
conditions for the formation of the nitride layer. The phases of all the nitrided samples detected by XRD were the ε-Ti2N
phase and δ-TiN, in addition to the α-Ti and β-Ti matrix phases. In the case of the treated sample with 50% nitrogen in
the gas atmosphere was chosen as the best condition. The increase of the relative intensities of the peaks assigned to
ε-Ti2N and δ-TiN phases and the decrease of those assigned to the α-phase indicates a larger thickness. The layer thickness
of this sample was about 12 μm. Subsequently, creep tests were performed on the material in the best condition. The creep
resistance resulting from the nitrided material shows a decrease in the secondary creep rate and an increase in the final
creep time when compared to the material without treatment.
Como referenciar
ALMEIDA, GISELE F.C.; COUTO, ANTONIO A.; REIS, DANIELI A.P.; MASSI, MARCOS; SILVA SOBRINHO, ARGEMIRO SOARES da; LIMA, NELSON B. de. Estudo da nitretação por plasma na fluência da liga TI-6Al-4V. Tecnologia em Metalurgia, Materiais e Mineração, v. 13, n. 4, p. 331-339, 2016. DOI: 10.4322/2176-1523.1068. Disponível em: http://repositorio.ipen.br/handle/123456789/27018. Acesso em: 01 May 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.