George S. Ansell

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Mechanical alloying (MA) is a powder metallurgy processing technique involving cold welding, fracturing, and rewelding of powder particles in a high-energy ball mill, and has now become an established commercial technique to produce oxide dispersion strengthened (ODS) nickeland iron-based materials. MA is also capable of synthesizing a variety of metastable(More)
A comprehensive set of models of precipitate formation during steel processing has been developed. In this work, it is applied to investigate Nb(C,N) precipitation in thin microalloyed steel slabs during continuous casting, reheating in a tunnel furnace and water quenching relative to the position with the slab and alloy content. The models include a(More)
A scanning and transmission electron microscope study has shown that human enamel specimens treated with a mild detergent solution exhibit etching of the enamel surface. The tooth surfaces subsequently show a greater susceptibility to the acid attack than samples treated with mineral acid alone. The evidence suggests that reevaluation of sodium dodecyl(More)