(山東工業(yè)大學材料科學與工程學院，濟南 250061)
摘 要: 研究了原料與Al5Ti1B中間合金組織形態(tài)之間的聯(lián)系，結(jié)果表明：在一定熔煉工藝條件下，用純Ti顆粒法可制備出含有顆粒狀TiAl3(3～15μm)和顆粒狀TiB2(0.1～1.2μm)的Al5Ti1B中間合金；用氟鹽法可以制備出含有塊狀與片狀形態(tài) TiAl3(10～100μm)和條狀與顆粒狀TiB2(0.2～3.0 μm)的Al5Ti1B中間合金。理論分析認為：原料對Al5Ti1B中間合金化合物的影響是通過改變化學反應體系和熔體結(jié)構(gòu)狀態(tài)來實現(xiàn)的。
關(guān)鍵字: AlTiB中間合金；化合物；組織形態(tài)
（College of Materials Science and Engineering, Shandong University of Technology, Ji'nan 250061, P.R.China）
Abstract:The relationship between raw materials and the intermetallic compounds in Al5Ti1B master alloys has been investigated. Experimental results show that Al5Ti1B master alloy containing granular TiAl3 (3～15μm)and TiB2 particles(0.1～1.2μm) can be obtained by using of pure Ti particles and compounds containing B; block and flake-like TiAl3 (10～100 μm) and bar-like TiB2( 0.2～3.0 μm )can be obtained by using of fluoride salt method under usual casting condition (melted at 850℃, holding 45min and pouring into permanent mould). Theoretical analyses show that different raw materials can have different chemical reaction processes and melt structures, then have different structures of Al5Ti1B master alloys.
Key words: AlTiB master alloys; compounds; structural morphology
