【摘要】：研究了不同固溶溫度與冷卻方式對(duì)Ti-4.5Al-2.5V-1.5Fe-0.25O熱軋板材顯微組織及力學(xué)性能的影響。結(jié)果表明:熱軋合金板材組織主要由α相和β相組成,隨著固溶溫度從910℃升高到1000℃,板材中α相含量減少而β相含量逐漸增多,初生等軸α相向針狀β相轉(zhuǎn)變進(jìn)而向全片層狀β相轉(zhuǎn)變;空冷冷卻速度較慢,高溫組織有很大一部分發(fā)生分解,而水冷冷卻抑制高溫析出相析出及分解,形成片層狀β轉(zhuǎn)變組織;隨著固溶溫度的升高,合金板材抗拉強(qiáng)度先增加后減小,伸長率降低;940℃固溶后水冷處理的合金板材力學(xué)性能最優(yōu):抗拉強(qiáng)度1264 MPa,伸長率11.4%。
[Abstract]:The effects of different solution temperature and cooling methods on the microstructure and mechanical properties of Ti-4.5Al-2.5V-1.5Fe-0.25O hot rolled sheet were studied. The results show that the microstructure of hot rolled alloy sheet is mainly composed of 偽 phase and 尾 phase. With the increase of solution temperature from 910 鈩，

本文編號(hào)：2200679