(四川聯(lián)合大學(xué)金屬材料系， 成都 610065)
摘 要: 用中斷擠壓鑄造法研究了ZL109合金液在莫來石纖維預(yù)制塊中的流動狀況。 發(fā)現(xiàn)微觀上流動前沿存在許多合金液的“包抄”， 這種包抄可能導(dǎo)致孔洞的形成； 討論了復(fù)合材料中孔洞的形成模型， 分析了預(yù)制塊中纖維間最小間隙在形成孔洞中的作用。
關(guān)鍵字: 擠壓浸滲 合金液包抄 孔隙
（Department of Metal Materials, Sichuan Union University, Chengdu 610065, P. R. China）
Abstract:The flow front of ZL109 melt in mullite chopped fibre preform during melt infiltration was investigated with a method called stopping squeeze casting. It was found that there are a number of “outflankings” in the flow front, which can result in the formation of pores in the composite. A modeling of pore forming and the influence of the minimum interspaces on pore forming was analyzed and discussed also.
Key words: infiltration by squeeze casting outflanking of melt pore in composite
