(大連海事大學(xué)金屬材料工藝研究所， 大連 116026)
摘 要: 研究了Ce對(duì)AlCuFeCr準(zhǔn)晶合金凝固特性的影響。結(jié)果表明加入Ce能提高 AlCuFeCr合金的硬度，加入適量的Ce可細(xì)化晶粒；而且固-液界面的生長(zhǎng)方式隨著 Ce含量的增加而明顯改變，使合金凝固形貌表現(xiàn)出由胞狀晶向胞狀枝晶再向樹(shù)枝晶轉(zhuǎn)變的規(guī)律。
關(guān)鍵字: 準(zhǔn)晶 稀土Ce 凝固形貌
（Institute of Metal and Technology, Dalian Maritime University, Dalian 116026）
Abstract:The solidification morphology and structure of AlCuFeCr quasicrystals were studied. The results showed that the hardness of AlCuFeCrCe is higher than that of AlCuFeCr, and the suitable content of Ce in the alloy refines the grain size. With increase of Ce content in alloy , the solidification morphology of the alloy occurs the transformation from cellular crystal to dentrite crystal.
Key words: quasicrystals rare earth element Ce solidificat ion morphology
