(1. 西安交通大學(xué) 材料科學(xué)與工程學(xué)院, 西安 710049；
2. 西北工業(yè)大學(xué) 材料科學(xué)與工程學(xué)院， 西安 710072)
摘 要: 通過對(duì)Al-Ti系和Al-TiO2系進(jìn)行高能球磨和壓制燒結(jié)制備了固態(tài)原位反應(yīng)生成的納米晶塊體Al3Ti/Al復(fù)合材料。研究表明: Al-Ti合金系高能球磨后，各組元晶粒得到細(xì)化，并且Ti在Al中發(fā)生了強(qiáng)制超飽和固溶，燒結(jié)時(shí)原位反應(yīng)形成納米晶Al3Ti/Al復(fù)合材料；而Al-TiO2反應(yīng)體系高能球磨僅發(fā)生組分晶粒細(xì)化，燒結(jié)時(shí)TiO2部分還原并和Al原位反應(yīng)生成納米晶(Ti2O3+Al3Ti)/Al復(fù)合材料。
關(guān)鍵字: 塊體納米晶復(fù)合材料；Al3Ti/Al復(fù)合材料；高能球磨；原位反應(yīng)燒結(jié)
nanocomposite by high-energy ball
milling and in-situ reaction sintering
ZHENG Yu-feng2，ZHENG Xiu-lin2
（1. College of Materials Science and Engineering,
Xi′an Jiaotong University, Xi′an 710049, China;
2. College of Materials Science and Engineering,
North-western Polytechnic University, Xi′an 710072, China）
Abstract:The bulk nanocrystalline Al3Ti/Al composite was synthesized by high-energy ball milling and in-situ reactive sintering. Two kind of reactive system，i.e.，Al-12%Ti and Al-10%TiO2，were used as origin materials for ball milling. After the ball milling Al-Ti powder was compressed and sintered，the bulk nanocrystlline Al3Ti/Al composite was prepared. For the ball milled Al-TiO2 powder, the bulk nanocrystlline (Ti2O3+Al3Ti)/Al composite was prepared.
Key words: bulk nanocrystalline composite; AlTi3/Al composite； high-energy ball milling；in-situ reactive sintering
