Abstract
The enhancement of grain refining action by the addition of boron along with titanium in aluminium and aluminium alloys is well known. This paper describes a process for the development of Al–5%Ti–1%B master alloy by the alloying of aluminium with titanium and also with boron which was produced in situ by the reduction of KBF 4 with excess aluminium. Alloying efficiencies as high as 92 and 80%, respectively, for titanium and boron computed on the basis of elemental recovery were obtained at 1200°C. The decrease in grain size of aluminium by the addition of a calculated quantity of master alloy was also studied.
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