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Deformation behavior of high Nb containing TiAl based alloy in α + γ two phase field region.
- Source :
-
Materials & Design . Jan2016, Vol. 90, p225-229. 5p. - Publication Year :
- 2016
-
Abstract
- Hot deformation behavior of high Nb containing TiAl based alloy with a nominal composition of Ti-44Al-8Nb-0.2W-0.2B-0.1Y at 1225 °C and 1275 °C is investigated. The deformation mechanism of α phase is dynamic recovery at 1275 °C, whereas γ phase is mainly dynamic recrystallized. It is revealed that α phase is softer and easier to be deformed when the alloy is deformed at 1275 °C. The reasons of the different deformation behavior between 1225 °C and 1275 °C, as well as the different deformation behavior between α phase and γ phase are analyzed. A multistep deformation process at gradually lowered temperature is proposed to eliminate the adverse influence of remnant lamellar structure on mechanical properties. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 02641275
- Volume :
- 90
- Database :
- Academic Search Index
- Journal :
- Materials & Design
- Publication Type :
- Academic Journal
- Accession number :
- 115344662
- Full Text :
- https://doi.org/10.1016/j.matdes.2015.10.080