Evolution of microstructures during cyclic and thermal stability of Ti-44Al-11Nb alloy

S. K. Varma, Erica Corral, Carlos Hernandez, R. Mahapatra, W. E. Frazier

Research output: Contribution to conferencePaper

1 Scopus citations

Abstract

A study has been conducted to determine the cyclic and static thermal stability of Ti-44Al-11Nb alloy in air in a range of temperature from 900 to 1000 °C. Weight gain method shows that the static oxidation rates are higher than cyclic oxidation rates under identical experimental conditions at a given temperature. The oxide layer at the surface penetrates the base metal in a direction parallel to the lamellae of the two phases, α2 and γ, confirmed by scanning electron micrographs. The thermal stability of up to 168 hours indicates that there are phase transformations taking placed affecting the microstructures in such a way that large amount of dislocation activities are involved.

Original languageEnglish (US)
Pages15-20
Number of pages6
StatePublished - Dec 1 1998
Externally publishedYes
EventProceedings of the 1998 TMS Fall Meeting - Rosemont, IL, USA
Duration: Oct 11 1998Oct 15 1998

Other

OtherProceedings of the 1998 TMS Fall Meeting
CityRosemont, IL, USA
Period10/11/9810/15/98

ASJC Scopus subject areas

  • Engineering(all)

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    Varma, S. K., Corral, E., Hernandez, C., Mahapatra, R., & Frazier, W. E. (1998). Evolution of microstructures during cyclic and thermal stability of Ti-44Al-11Nb alloy. 15-20. Paper presented at Proceedings of the 1998 TMS Fall Meeting, Rosemont, IL, USA, .