ISSN 2594-5327
59th Congresso anual — Vol. 59 , num. 1 (2004)
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Abstract
The objective of this work was to evaluate the creep behavior of the Ti-6Al-4V alloy focusing on the determination of the experimental parameters related to the creep stages. Constant load creep tests were conducted with Ti-6Al-4V alloy in air and in nitrogen atmosphere at 600°C and 700°C. Results indicated at the creep resistance of the alloy in nitrogen atmosphere is greater than in air. Previously reported results about the activation energies and the stress exponents values indicate that the primary and stationary creep, for both test conditions, was probably controlled by dislocation climb. The decrease in ductility after creep in air is larger than creep under nitrogen atmosphere due to oxidation and surfaces cracks.
The objective of this work was to evaluate the creep behavior of the Ti-6Al-4V alloy focusing on the determination of the experimental parameters related to the creep stages. Constant load creep tests were conducted with Ti-6Al-4V alloy in air and in nitrogen atmosphere at 600°C and 700°C. Results indicated at the creep resistance of the alloy in nitrogen atmosphere is greater than in air. Previously reported results about the activation energies and the stress exponents values indicate that the primary and stationary creep, for both test conditions, was probably controlled by dislocation climb. The decrease in ductility after creep in air is larger than creep under nitrogen atmosphere due to oxidation and surfaces cracks.
Keywords
Ti-6Al-4V, creep, nitrogen atmosphere
Ti-6Al-4V, creep, nitrogen atmosphere
How to cite
Reis, Danieli Aparecida Pereira; Silva, Cosme Roberto Moreira da; Nono, Maria do Carmo de Andrade; Barboza, Miguel Justino Ribeiro; Neto, Francisco Piorino; Perez, Éder Alexandre Camargo.
EVALUATION OF THE CREEP STAGES OF THE Ti-6Al-4V ALLOY WITH ATMOSPHERE CONTROLLING,
p. 3139-3146.
In: 59th Congresso anual,
São Paulo, Brasil,
2004.
ISSN: 2594-5327, DOI 10.5151/2594-5327-4127
