Article ID Journal Published Year Pages File Type
1621043 Journal of Alloys and Compounds 2009 4 Pages PDF
Abstract

The response to thermal exposure of ball-milled Al/K2TiF6/KBF4 powder blends was investigated to explore the potential of PM processing for the manufacture of Al–Ti–B alloys. K2TiF6 starts to be reduced by aluminium as early as 220 °C when ball-milled Al/K2TiF6/KBF4 powder blends are heated. The reaction of KBF4 with aluminium follows soon after. The Ti and B thus produced are both solutionized in aluminium before precipitating out as Al3Ti and TiB2. All these reactions take place below the melting point of aluminium. The ball-milled Al/K2TiF6/KBF4 powder blends heat treated at approximately 525 °C can be compacted to produce Al–Ti–B pellets with in situ formed Al3Ti and TiB2 particles. These pellets are shown to be adequate grain refiners for aluminium alloys.

Related Topics
Physical Sciences and Engineering Materials Science Metals and Alloys
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