Abstract
An Al-Fe alloy was in one case grain refined with the AlTi5B1 grain refiner and in the other with the AlTi5B1 and AlTi3C0.15 grain refiners. Both melts were stirred and the samples were cast two, fifteen and twenty-five minutes after the addition of the grain refiners. The grain size increase with increasing holding time was almost negligible in the case of the addition of both grain refiners. A much larger increase was found in the case of the addition of just the AlTi5B1 grain refiner, indicating the fading of the effectiveness the AlTi5B1 grain refiner and the effectiveness of the AlTi3C0.15 grain refiner in the case when the melt was grain refined with both grain refiners. The result suggests that the use of both grain refiners allows the possibility to control the fading performance of a grain-refined melt.

Key words
aluminium alloy, solidification, grain refining, fading, stirring

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