|About this Abstract
||2017 TMS Annual Meeting & Exhibition
||GAT-2017 (Gamma Alloys Technology - 2017)
||F-51: Characterization of Thermal Deformation Behavior of a Novel Ti-47Al-Cr-2Mn-0.5Fe- 0.05Y Alloy
||Xiaopeng Wang, Fantao Kong, Qin Sun, Yu Zhang, Shouzhen Cao, Yuyong Chen
|On-Site Speaker (Planned)
The high temperature deformation behavior of Ti-47Al-Cr-2Mn-0.5Fe- 0.05Y alloy was investigated by hot compression tests in the temperature range of 1050 to 1250 ℃ and strain rate range of 0.01 s<SUP>-1</SUP> to 0.5 s<SUP>-1</SUP>. The hot compression results indicated that the Ti-47Al-Cr-2Mn-0.5Fe-0.05Y alloy exhibits good deformability at high temperature. The deformation activation energy of this alloy was 352.36 KJ/mol which was higher than the diffusion activation energy of Ti and Al. and this result meant that the main softening mechanism of thermal deformation was dynamic recrystallization. A thermal processing map of this alloy was developed on the basis of the flow stress and dynamic material model, and the optimum hot forging parameter for industrial productions was determined (1240℃,0.05s<SUP>-1</SUP>). Finally a crack-free Ti-47Al-Cr-2Mn- 0.5Fe-0.05Y alloy pancake was prepared by canned forging.
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