(1. 哈爾濱工業(yè)大學(xué) 材料科學(xué)與工程學(xué)院， 哈爾濱 150001;
2. 哈爾濱理工大學(xué) 材料科學(xué)與工程學(xué)院， 哈爾濱 150080)
摘 要: 利用XDTM法與攪拌鑄造技術(shù)相結(jié)合的工藝制備了TiCp/Zn-10Al(%)復(fù)合材料，采用定向凝固技術(shù)研究增強(qiáng)粒子TiCp在凝固界面的行為及對(duì)復(fù)合材料凝固速度的影響。結(jié)果表明：TiC顆粒被凝固的界面前沿所排斥，造成界面前沿TiC顆粒富集，但當(dāng)TiC顆粒含量超過6%后，富集現(xiàn)象已不顯著。同時(shí)發(fā)現(xiàn)隨著TiC顆粒含量的增加，復(fù)合材料的凝固速度降低。
關(guān)鍵字: TiCp/Zn-10Al；復(fù)合材料； 定向凝固； 凝固速度
of Zn-10Al alloy
WANG Li-ping２
（1. School of Materials Science and Engineering， Harbin Institute of Technology，Harbin 150001， P.R.China;
2. School of Materials Science and Engineering, Harbin University of Science andTechnology，Harbin 150080， P.R.China）
Abstract:TiCp/Zn-10Al(%) composites was fabricated by XDTM and stirringcasting techniques. The behavior of reinforcement TiC particle in the solidification interface and its effect on the solidification velocity of composites were studied by the directional solidification. The results show that TiC particle is pushed by the solidification front, which results in the accumulation of TiC in the front. However this phenomenon is not obvious when the particle extent is more than 6%. Meanwhile， the solidification velocity of composites decrease with the increasing of the TiC particle content.
Key words: TiCp/Zn-10Al； composites； directional solidification； solidification velocity
