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Abstract
The design and operation of equipment to generate rapidly solidified samples in batches as large as 5 kg, under closely controlled atmosphere conditions, is described. Two modes of operation are possible at present: gas atomization-substrate solidification (GASS) and crucible melt extraction (CME). Both produce particulate, the former with a flake type morphology, the latter as a discontinuous fibre. Several aluminium alloys have been processed via GASS and one of them (Al–9 wt-%Mn) has been compared to the same composition processed in air access equipment. Tin and a lead-antimony alloy have been used to demonstrate the operational characteristics of the crucible melt extraction mode. PM/0319