Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1630673 | Journal of University of Science and Technology Beijing, Mineral, Metallurgy, Material | 2006 | 5 Pages |
Abstract
The hot deformation behavior of FGH96 superalloys at 1070-1170°C and 5Ã10â4-2Ã10â1 sâ1 were investigated by means of the isothermal compression tests at a Gleeble-1500 thermal mechanical simulator. The results show that dynamic recovery acts as the main softening mechanism below 2Ã10â3 sâ1 whereas dynamic recrystallization acts as the main softening mechanism above 2Ã10â3 sâ1s during deformation; the temperature increase caused by the deformation and the corresponding softening stress is negligible; the thermal-mechanical constitutive model to describe the hot deformation behavior is given, and the value of the apparent deformation activation energy (Qdef) is determined to be 354.93 kJ/mol.
Related Topics
Physical Sciences and Engineering
Materials Science
Metals and Alloys
Authors
Jiantao Liu, Guoquan Liu, Benfu Hu, Yuepeng Song, Ziran Qin, Yiwen Zhang,