Hot Deformation Behavior and Zener-Holomon Parameter Constitutive Model of Ti-6Al-7Nb Alloy
- Resource Type
- Conference
- Authors
- Zhong, Mingjun; Wang, Kelu; Ouyang, Delai; Li, Xin; Zhou, Xuan; Feng, Rui
- Source
- 2020 3rd International Conference on Advanced Electronic Materials, Computers and Software Engineering (AEMCSE) AEMCSE Advanced Electronic Materials, Computers and Software Engineering (AEMCSE), 2020 3rd International Conference on. :621-624 Apr, 2020
- Subject
- Computing and Processing
Ti-6Al-7Nb alloy
hot deformation behavior
Zener-Holomon parameter
constitutive model
- Language
The thermal compression test of Ti-6Al-7Nb alloy was carried out by a Gleeble-3800 thermal simulator. The hot deformation behavior of Ti-6Al-7Nb alloy was studied under the conditions of deformation temperature 940-1030°C and strain rate 0.001-10s^-1, and the hot deformation activation energy of the alloy was calculated. The results show that the flow stress of Ti-6Al-7Nb alloy decreases with increasing the deformation temperature and increases with increasing the strain rate. Based on the peak stress, the Arrhenius constitutive model of Ti-6Al-7Nb alloy was established by Zener-Holomon parameter. The results show that the model has higher prediction accuracy for peak stress. The Pearson correlation coefficient r for the predicted value of peak stress and the experimental value is 0.96089, and the linear correlation coefficient R^2 is 0.91904. This research can be used to guide the formulation of Ti-6Al-7Nb alloy hot working process and the finite element simulation of the hot deformation process.