本文選題：TA鈦合金　切入點：三態(tài)組織　出處：《稀有金屬材料與工程》2015年07期

【摘要】：近β變形+熱處理工藝為TA15鈦合金獲得三態(tài)組織提供了一種可行途徑,作為三態(tài)組織的重要組成部分并決定其損傷容限性能的片狀α是在近β變形和后續(xù)熱處理共同作用下產(chǎn)生的,其演化過程十分復雜,而三態(tài)組織對各相特別是片狀α的含量和形態(tài)要求苛刻。本研究采用熱模擬壓縮實驗和定量金相實驗研究了不同近β變形條件下(變形溫度、變形程度和應變速率)TA15鈦合金變形+高低溫強韌化熱處理(950℃/100 min/WQ+800℃/8 h/AC)后微觀組織演化行為,揭示了組織中片狀α含量和形貌的演化規(guī)律;在此基礎上,以高損傷容限性能為目標,研究確定了獲得滿足三態(tài)組織要求并具有優(yōu)異斷裂性能的片狀α近β變形條件區(qū)間;實驗和理論分析表明:針對TA15鈦合金,在所確定的近β變形區(qū)間內(nèi)可以獲得性能優(yōu)異的三態(tài)組織。研究結果可為TA15鈦合金通過近β變形工藝獲得三態(tài)組織和性能優(yōu)化的片狀α提供指導。
[Abstract]:The near 尾 -deformation heat treatment provides a feasible way for TA15 titanium alloy to obtain three-state microstructure.The lamellar 偽, which is an important part of the tristate structure and determines its damage tolerance, is produced under the combined action of near 尾 deformation and subsequent heat treatment, and its evolution process is very complex.However, the content and morphology of 偽 in each phase, especially in flake form, are demanding for the tristate structure.In this study, thermal simulation compression experiments and quantitative metallographic experiments were used to study the deformation temperature under different near 尾 deformation conditions.The microstructure evolution behavior of Ta-15 titanium alloy after deformed high and low temperature toughening heat treatment at 950 鈩，

本文編號：1721682