Abstract
Isothermal compression of the Mo-Nb single crystals was conducted on a Gleeble-3800 thermal simulator in the deformation temperature range of 1100-1300℃ with strain rates from 0.001 to 10 s-1, height reduction of 50%, and true strain 0.7. The results show that the deformation temperature and strain rates affect the flow stress during the thermal deformation of Mo-Nb single crystals significantly. The true stress-strain curves exhibit a peak flow stress, flow softening and steady flow behavior. The constants of Mo-Nb single crystals, such as the activation energy Q, and the stress exponent n, were calculated. The constitutive equation was established based on hyperbolic-sine equations of Arrhenius type.
| Translated title of the contribution | Hot Deformation Behavior and Constitutive Equation of Mo-Nb Single Crystals |
|---|---|
| Original language | Chinese (Traditional) |
| Pages (from-to) | 207-213 |
| Number of pages | 7 |
| Journal | Xiyou Jinshu Cailiao Yu Gongcheng/Rare Metal Materials and Engineering |
| Volume | 47 |
| Issue number | 1 |
| State | Published - 1 Jan 2018 |