本文選題：泡沫鈦　切入點：等溫發(fā)泡　出處：《材料科學與工藝》2015年04期 　論文類型：期刊論文

【摘要】：為了確定氣體捕捉法制備泡沫Ti-6Al-4V等溫發(fā)泡過程中孔隙率和微觀孔洞的變化規(guī)律,在不同發(fā)泡溫度及發(fā)泡時間下制備了泡沫Ti-6Al-4V.運用阿基米德原理對泡沫Ti-6Al-4V的孔隙率進行測量,通過OM和SEM對其微觀特征進行觀察.研究表明:泡沫Ti-6Al-4V的孔隙率及孔徑均隨等溫發(fā)泡溫度升高而增加;但當發(fā)泡溫度大于950℃時,孔隙率和孔徑均減小,且孔洞形態(tài)由球形變成多邊形,這是由于基體內(nèi)生成大尺寸β相造成的.增加發(fā)泡時間能以促進孔洞長大的方式提高泡沫Ti-6Al-4V的孔隙率,球形孔洞數(shù)量隨著發(fā)泡時間的增加逐漸增多.經(jīng)950℃/10 h發(fā)泡得到了孔隙率34.2%、孔徑平均值156μm、孔洞為球形且分布彌散的泡沫Ti-6Al-4V.
[Abstract]:In order to determine the variation of porosity and microvoid in the isothermal foaming process of Ti-6Al-4V foam prepared by gas capture method, Ti-6Al-4V foam was prepared at different foaming temperatures and foaming time. The porosity of foam Ti-6Al-4V was measured by Archimedes principle. The microcosmic characteristics of foam Ti-6Al-4V were observed by OM and SEM. The results showed that the porosity and pore size of foam Ti-6Al-4V increased with the increase of isothermal foaming temperature, but when the foaming temperature was higher than 950 鈩，

本文編號：1628261