本文選題：鈦合金 + 復(fù)雜結(jié)構(gòu)機翼　； 參考：《稀有金屬材料與工程》2017年11期

【摘要】：Ti-6Al-4V合金是應(yīng)用于航空和汽車工業(yè)領(lǐng)域的關(guān)鍵結(jié)構(gòu)件,但是它硬度高,難加工,價格昂貴,且大尺寸毛坯時材料利用率很低,采用傳統(tǒng)加工方法很難滿足現(xiàn)代制造的需求。針對Ti-6Al-4V合金機翼,采用鉛模擬實驗優(yōu)化了合理的鍛坯形狀,并引入了一種閉式等溫鍛造工藝,研究了等溫鍛造Ti-6Al-4V合金機翼的成形能力、機械性能和工藝參數(shù)等性能。結(jié)果表明:與傳統(tǒng)加工的鈦合金機翼相比,等溫鍛造機翼顯著的改善了零件的機械性能,材料利用率從13%提高到50%;在950℃的等溫鍛造溫度下,Ti-6Al-4V基體內(nèi)片狀α相逐漸轉(zhuǎn)變?yōu)棣孪?而當(dāng)鍛造溫度為900℃時,這種相變效果呈減弱趨勢。
[Abstract]:Ti-6Al-4V alloy is a key structural part used in aviation and automobile industry, but it has high hardness, difficult to process, high price, and low material utilization ratio when large size blank, so it is difficult to meet the needs of modern manufacturing by using traditional processing methods. For the wing of Ti-6Al-4V alloy, the reasonable shape of forging blank was optimized by lead simulation experiment, and a closed isothermal forging process was introduced. The formability, mechanical properties and technological parameters of the wing of isothermal forging Ti-6Al-4V alloy were studied. The results show that compared with the traditional titanium alloy wing, the mechanical properties of the parts are significantly improved by isothermal forging, the material utilization ratio is increased from 13% to 50%, and the lamellar 偽 phase of Ti-6Al-4V base is gradually transformed to 尾 phase at 950 鈩，

本文編號：1844310