Analysis of the response to thermal exposure of Al/K2TiF6 powder blends

Al–Ti–B grain refiners via powder metallurgy processing of Al/K2TiF6/KBF4 powder blends

“…1) is linked with the polymorphic transformation of the KBF 4 salt [25]. The next exothermic signal was shown by XRD and metallographic analysis of samples heated at 525 • C to be produced by [25]:…”

“…It is inferred from the DSC scan that the reactions (2) and (4) occur rather fast leading to a temporary solute Ti and B build up in aluminium while the precipitation of Al 3 Ti and TiB 2 particles occurs nearer to the end of signal 8. KBF 4 salt which generates AlB 2 particles when processed with aluminium alone [25], is clearly engaged in TiB 2 formation when K 2 TiF 6 salt is added in the mixture. TiB 2 is more stable than AlB 2 and will eventually form when Ti is available [14].…”

“…The response to thermal exposure of the ball milled binary Al/K 2 TiF 6 and Al/KBF 4 [25,26]. So, only a brief summary is given here to help with the identification of the reaction sequence during thermal exposure of the ball milled ternary Al/K 2 TiF 6 /KBF 4 powder blend.…”

“…Such a process was recently employed to synthesize binary Al-Ti and Al-B alloys with in situ formed Al 3 Ti and AlB 2 particles, respectively [25,26]. This solid-state process offers a very fine dispersion of aluminides and ensures rapid dissociation and dissolution into the melt.…”

Microstructures and corrosion properties of casting in situ Al3Ti-Al composites

“…The methods to fabricate this kind of composites mainly include mechanical alloying, reactive sintering process, powder metallurgy, and casting [1][2][3][4][5][6][7][8][9][10][11][12]. Comparatively, the casting method has the largest potential for industrial applications due to its simple operating process and the ability to obtain large volume material with low cost.…”