本文選題：TiAl　切入點(diǎn)：Nb含量　出處：《兵器材料科學(xué)與工程》2017年01期

【摘要】：為改善TiAl基合金的單向韌性,研究Nb纖維含量對(duì)TiAl基復(fù)合材料沖擊性能的影響,采用熔模精密鑄造和真空水冷銅坩堝感應(yīng)熔煉爐離心澆注工藝制備連續(xù)Nb纖維增韌TiAl-Nb復(fù)合材料,并對(duì)其進(jìn)行950℃×2h真空退火處理。用SEM、EDS觀察復(fù)合材料界面形貌與成分,用落錘沖擊試驗(yàn)機(jī)測(cè)試復(fù)合材料的沖擊性能。研究結(jié)果表明:Nb纖維與TiAl基體材料復(fù)合效果良好,Ti、Al、Si、Nb元素在界面層發(fā)生交互式擴(kuò)散;隨Nb含量增加復(fù)合材料的沖擊性能改善,當(dāng)Nb體積分?jǐn)?shù)為20%時(shí),沖擊韌性最好。
[Abstract]:In order to improve the unidirectional toughness of TiAl based alloy and study the effect of NB fiber content on the impact properties of TiAl matrix composites, continuous NB fiber toughened TiAl-Nb composites were prepared by investment precision casting and centrifugal casting in a vacuum water cooled copper crucible induction melting furnace. The composites were annealed at 950 鈩，

本文編號(hào)：1656242