|About this Abstract
||2017 TMS Annual Meeting & Exhibition
||GAT-2017 (Gamma Alloys Technology - 2017)
||F-31: Influence of Hot Processing Parameters on Dynamic Recrystallization Behavior of Ti-47Al-2Nb-2Cr Alloy
||Lianxi Hu, Zhipeng Wan, Yu Sun
|On-Site Speaker (Planned)
The Ti-47Al-2Nb-2Cr alloy exhibits several excellent mechanical properties for the applications at elevated temperature. The mechanical properties of the deformed components rely on the homogeneity and volume fraction of dynamically recrystallized microstructure. In order to investigate the effect of the hot deformation temperature in combination with the strain rate on the dynamically recrystallized behavior of Ti-47Al-2Nb-2Cr alloy, series of compression tests over a wide range of temperature (1223-1423K) and strain rate (0.001-0.1s-1) were performed. In the present work, the dynamic recrystallization kinetic model which presents the correlation between processing parameters and dynamically recrystallized microstructure was established based on the flow stress behavior. Microstructure characterization along with grain orientation spread analysis indicated that the altered temperature and strain rate led to change in microstructure such as the grain refinement and dynamic recrystallization volume fraction.
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