Comparative study of creep resistance in Ti-6Al-4V alloy with different heat treatments

Paper #:
  • 2010-36-0352

Published:
  • 2010-10-06
Citation:
Yogi, L., Sugahara, T., Briguente, L., Reis, D. et al., "Comparative study of creep resistance in Ti-6Al-4V alloy with different heat treatments," SAE Technical Paper 2010-36-0352, 2010, https://doi.org/10.4271/2010-36-0352.
Pages:
11
Abstract:
Materials with appropriate behavior at high temperatures and aggressive environments have become a scientific and technological necessity nowadays. Studies have been undertaken for improvement in getting new alloys, especially for the reevaluation of existing commercial alloys, through the acquisition of data under conditions of higher severity. In this context it was used for this work to Ti-6Al-4V in the form of cylindrical bars, provided forged and annealed at 190°C for 6 hours and cooled in air, which has favorable properties for aerospace application. The alloy after heat treatments to obtain the bimodal structures, martensite and Widmanstätten was subjected to creep tests at 600°C under the conditions of 250 and 319 MPa, in the form of constant load. The structures of Widmanstätten and martensite showed higher creep resistance in both stress conditions used in the trials.
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