Non-isothermal ω Phase Transformation of Ti-1300 Alloy

作者：Wan Mingpan^*; Zhao Yongqing; Lei Min; Xiang Song

来源：Rare Metal Materials and Engineering, 2018, 47(5): 1466-1470.

• Ti-1300 alloy
• non-thermal
• omega phase transformation
• activation energy

The omega phase transformation of Ti-1300 alloy during continuous heating was investigated using a dilatometric method. Results show that the beta(M-)->omega+beta phase transformation happens in low temperature zone, but the beta(M)->alpha+beta phase transformation happens in high temperature zone during the continuous heating process. The temperature region of the beta(M)->omega+beta phase transformation of the Ti-1300 alloy moves to high temperature area with the heating rate increasing. The curves of omega phase transformed volume fraction and temperature at different heating rates exhibit a typical 'S' pattern. The activation energy of non-isothermal omega phase transformation increases with increasing of o) phase transformed volume fraction, which causes larger precipitate resistance of omega phase. The average activation energy of the non -isothermal omega phase transformation of the alloy is 55 kJ/mol.

• 出版日期2018-5
• 单位贵州大学; 西北有色金属研究院