电解加钛与熔配加钛对工业纯铝晶粒细化的作用

对比研究了电解加钛,以Al-Ti和Al-Ti-B中间合金方式向工业纯铝熔配加钛以及向电解低钛铝合金中再熔配加Al-B中间合金的细化效果.结果表明,不同加钛方式对纯铝都有较强的细化作用; 在钛含量相同的条件下,电解加钛的晶粒细化能力明显高于熔配加Al-Ti中间合金的; 钛含量较低时,熔配加Al-Ti-B中间合金的细化效果略好于电解加钛的,钛含量较高时,二者的细化能力相当.向电解生产的低钛铝合金中再熔配加入Al-B中间合金,可明显改善晶粒细化效果,尤其在较低的钛含量时表现得非常明显.

Grain refinement effects of titanium added to commercial pure aluminum by electrolysis and by master alloys

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.