熱軋變形對TB-13合金組織和織構(gòu)的影響
發(fā)布人：上海艾荔艾金屬材料有限公司bt990.com.cn
更新時間：2015-12-27
采用光學(xué)顯微鏡和X射線衍射儀分析TB-13合金在不同熱軋變形條件下組織和織構(gòu)的演變規(guī)律。
熱軋變形對TB-13合金組織和織構(gòu)的影響Influence of hot rolling deformation on microstructure and?texture of TB-13 alloy采用光學(xué)顯微鏡和X射線衍射儀分析TB-13合金在不同熱軋變形條件下組織和織構(gòu)的演變規(guī)律。結(jié)果表明：TB-13合金在變形量小于50%的熱軋過程中只發(fā)生動態(tài)回復(fù)，當變形量增加到59%時，該合金發(fā)生動態(tài)再結(jié)晶，且隨著變形量的增加，動態(tài)再結(jié)晶程度逐漸增大，細小的再結(jié)晶亞晶粒逐漸取代原始等軸狀β晶粒從而使組織細化，動態(tài)再結(jié)晶是該合金熱軋過程中主要的細化機制。同時，熱軋變形使得該合金形成以旋轉(zhuǎn)立方取向{001}＜110＞織構(gòu)和Goss取向{110}＜001＞織構(gòu)為主的多種織構(gòu)，且隨著變形量的增大，晶粒取向由Goss取向向旋轉(zhuǎn)立方取向轉(zhuǎn)移。
The evolutions of microstructure and texture for TB-13 alloy during hot rolling were investigated by optical microscopy and X-ray diffracometry. The results show that the deformation mechanism is dynamic recovery in TB-13 alloy when the deformation reduction is less than 50%. When the deformation reduction is 59%, dynamic recrystallization occurs and the volume fraction of dynamic recrystallization increases with the increase of the deformation reduction. The equiaxed β grains are substituted for the recrystal grains, which leads to microstructure refinement. This indicates that the refinement mechanism is dynamic recrystallization. The main texture components of TB-13 alloy after hot rolling deformation are {001} ＜110＞ and {110} ＜001＞ textures. The orientation of grain changes from Goss orientation to rotating cube orientation when the deformation reduction increases.
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