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CN102922239A 一种TA5钛合金小规格棒材的制备方法 无效 - 撤回

一种TA5钛合金小规格棒材的制备方法
摘要：
本发明提供了一种TA5钛合金小规格棒材的制备方法，包括以下步骤：一、将TA5钛合金铸锭在β相变点以上50℃～200℃进行开坯锻造，得到第一锻坯；二、将第一锻坯在β相变点以上10℃～30℃进行第一拔长锻造，得到第二锻坯；三、将第二锻坯在β相变点以下10℃～20℃进行第二拔长锻造，得到第三锻坯；四、将第三锻坯进行彻底修磨；五、将第三锻坯在始轧温度为相变点以下30℃～40℃轧制，得到直径为17mm～33mm的TA5钛合金小规格棒材。本发明采用开坯锻造、自由锻造与精锻相结合的方法制备轧制棒坯，然后轧制得到TA5钛合金小规格棒材；采用本发明制备的TA5小规格棒材表面质量良好，力学性良好，成材率高。
摘要（英）：

The invention provides a preparation method for TA5 titanium alloy bars with small specifications. The method comprises the following steps: first, cogging forging is performed on TA5 titanium alloy ingot above a beta phase change point at 50 DEC G-200 DEC G to obtain first forging stock; second, pulling forging is performed on the first forging stock above the beta phase change point at 10 DEC G -30 DEC G to obtain second forging stock; third, second pulling forging is performed on the second forging stock below the beta phase change point at 10 DEC G -20 DEC G to obtain a third forging stock; fourth, the third forging stock is thoroughly abraded; and fifth, the third forging stock is rolled at initial rolling temperature of 30 DEG C-40 DEG C below the phase change point to obtain the TA5 titanium alloy bars of small specifications with diameter of 17mm-33mm. Bar blanks are rolled by the method of combining cogging forging, free forging and fine forging, and the TA5 titanium alloy bars with small specifications are rolled and obtained. The TA5 titanium alloy bars with small specifications are good in surface quality and mechanical properties and high in yield.

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