Abstract
A literature survey of aluminium powder metallurgy (PM) for high-strength applications was undertaken. Improvements in aluminium—base alloys made via ingot metallurgy (IM) are reaching the point of diminishing returns. PM offers an alternative technology, capable of producing alloys having improved fatigue, corrosion, and stress-corrosion resistance, as well as improved strength and toughness at room or elevated temperatures. The steps involved in powder metallurgy: powder manufacture, powder processing, de-gassing, and consolidation, are described. The merits and deficiencies of the various processes for each step are compared. The key to successful application of Al powder metallurgy alloys appears to be the de-gassing and consolidation of the powder. The properties of several new PM alloys are compared, with particular emphasis on highstrength, corrosion-resistant alloys and alloys developed for use at elevated temperatures.
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Pickens, J.R. Aluminium powder metallurgy technology for high-strength applications. J Mater Sci 16, 1437–1457 (1981). https://doi.org/10.1007/BF02396863
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DOI: https://doi.org/10.1007/BF02396863