Hot-compression behaviors of W-50%Cu composite
Tóm tắt
The hot compression behaviors of W-50%Cu composite were investigated at the strain rate range from 0.01 to 5.00 s−1 and the temperature range from 850 to 1000 °C on Gleeble-1500D hot simulator. The results show that the flow stress during hot compression of W-50%Cu composite is strongly affected by the compression temperature and the strain rate. Moreover, the flow stress decreases with the raising deforming temperature, and increases with the increasing strain rate. The flow stress of the W-50%Cu composite at high temperature can be expressed by Arrhenius model, and the values of structural factor A, stress scale parameter α, stress index n and hot deformation activation Q are 3.18 × 109 s−1, 0.0133 MPa−1, 6.27393 and 239.442 kJ/mol, respectively.
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