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Ti-7Mo-3Nb-3Cr-3Al合金的熱變形行為
發(fā)布人：上海艾荔艾金屬材料有限公司bt990.com.cn
更新時間：2015-09-12
以Gleeble-3500熱模擬試驗機為實驗平臺，研究Ti-7333鈦合金在應(yīng)變速率0.001~0.1 s-1，變形溫度750~900 ℃條件下的熱變形行為。
Ti-7Mo-3Nb-3Cr-3Al合金的熱變形行為Hot deformation behavior of Ti-7Mo-3Nb-3Cr-3Al alloy
以Gleeble-3500熱模擬試驗機為實驗平臺，研究Ti-7333鈦合金在應(yīng)變速率0.001~0.1 s-1，變形溫度750~900 ℃條件下的熱變形行為。結(jié)果表明：應(yīng)變速率和變形溫度的變化對合金流變應(yīng)力影響顯著，流變應(yīng)力隨著變形溫度的升高而降低，隨應(yīng)變速率的提高而增大，當流變應(yīng)力達到峰值后趨于平穩(wěn)，熱變形過程的流變應(yīng)力可采用雙曲正弦本構(gòu)關(guān)系來描述，平均變形激活能為335.89 kJ/mol。
The hot deformation behavior of Ti-7333 titanium alloy during hot compression deformation was studied by thermal simulation test at the deformation temperature of 750-900 ℃ and the strain rate of 0.001-0.1 s-1on the Gleeble-3500 thermal and mechanical simulator. The results show that the flow stress is controlled by both strain rate and deforming temperature. The flow stress decreases with the increases of deforming temperature, and increase with the increase of strain rate until the flow stress reaches the peak value, then the flow stress remains constant. The flow behaviors are described by hyperbolic sine constitutive equation, and the average action energy is 335.89 kJ/mol.
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