(鄭州大學(xué) 物理工程學(xué)院 河南省材料物理重點實驗室， 鄭州 450052)
摘 要: 對比研究了電解加鈦， 以Al-Ti和Al-Ti-B中間合金方式向工業(yè)純鋁熔配加鈦以及向電解低鈦鋁合金中再熔配加Al-B中間合金的細(xì)化效果。 結(jié)果表明， 不同加鈦方式對純鋁都有較強的細(xì)化作用；在鈦含量相同的條件下， 電解加鈦的晶粒細(xì)化能力明顯高于熔配加Al-Ti中間合金的；鈦含量較低時， 熔配加Al-Ti-B中間合金的細(xì)化效果略好于電解加鈦的，鈦含量較高時， 二者的細(xì)化能力相當(dāng)。 向電解生產(chǎn)的低鈦鋁合金中再熔配加入Al-B中間合金，可明顯改善晶粒細(xì)化效果， 尤其在較低的鈦含量時表現(xiàn)得非常明顯。
關(guān)鍵字: 電解低鈦鋁合金； 中間合金； 晶粒細(xì)化
LIU Zhong-xia, WENG Yong-gang, SONG Tian-fu
（Department of Physics,
Laboratory of Materials Physics of Henan Province,
Zhengzhou University, Zhengzhou 450052， China）
Abstract: The grain refinement effect of titanium added to commercial pure aluminum by electrolysis and by Al-Ti-B and Al-Ti master alloys was investigated. The grain refinement effects of electrolytic low-titanium aluminum with boron, which was added to the alloys through Al-B master alloy, were also studied. The experimental results show that the grain refinement effects of titanium added to pure aluminum by different methods are all very obvious. The grain refinement effect of titanium added by electrolysis is better than that by Al-Ti master alloy when the titanium content is the same. When the titanium content is low, the grain refinement effect of Al-Ti-B master alloy is slightly superior to that of electrolytic low-titanium aluminum alloys, but when the titanium content is high, they have almost the same grain-refining ability. If Al-B master alloy is added into electrolytic low-titanium aluminum alloys, the grain refinement effect can be further improved, especially for the alloys with very low titanium content.
Key words: electrolytic low-titanium aluminum alloy; master alloy; grain refinement
