Abstract
The hot deformation behavior of the W-1.0 m-ZrO2 alloy over a temperature range of 1300–1600 °C and a strain rate of 0.005–1 s−1 was investigated. The microstructure after deformation was characterized using the electron back scatter diffraction (EBSD) technique. The flow stress behavior of the tungsten alloy indicates that the main recovery mechanisms of the W-1.0 m-ZrO2 alloy during deformation are dynamic recovery (DRV) and dynamic recrystallization (DRX), with DRV playing a dominant role. The hot processing map for a real strain of 0.68 reflects that the optimal processing region is 1500–1600 °C, 0.1−1~1 s−1. When the temperature reaches 1600 °C, the grain orientation spread (GOS) value and dislocation density of the samples show a pattern opposite to that of other temperatures as the strain rate decreases due to the growth of recrystallized grains. The orientation of the texture component of the hot deformation samples was mainly composed of< 111 > and< 100 > , and there was a shift in the texture component from< 111 > to< 100 > with a decrease in strain rate at different temperatures.
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