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用 Al-Ti 中间合金处理铝熔体的传统方法已有30余年的历史。此法至今仍为某些冶金工作者在某些场合所使用。进一步研究查明,钛与硼结合使用,在加钛浓度低得多的情况下可以大大促进成核过程。例如,最近证明,采用 Al5TilB 中间合金对99.7%纯铝加入0.005%Ti,能使铸锭晶粒达到200微米以下,而用 Al5Ti 中间合金达到同等的细化晶粒效果则需要加入0.06%Ti,
The traditional method of processing aluminum melt with Al-Ti master alloy has been more than 30 years old. This method is still used by some metallurgists on some occasions today. Further studies have shown that the combination of titanium and boron can greatly promote nucleation at much lower titanium concentrations. For example, it has recently been demonstrated that the addition of 0.005% Ti to 99.7% pure aluminum using Al5TilB master alloy results in ingot grains below 200 microns whereas achieving equivalent grain refinement with Al5Ti master alloy requires the addition of 0.06% Ti,