Abstract
The microstructural characteristics of a range of splat-quenched aluminium-copper alloys are described. The variation of the microstructure as a function of thickness and composition has been determined, by use of conventional 100 kV and high-voltage electron microscopy, and also by ion-beam thinning techniques. With increasing thickness alloys containing < 13 at. % Cu undergo the coventional aluminium-copper precipitation sequence, but alloys of > 13 at.%Cu exhibit a range of degenerate, radial and parallel eutectic structures. Restriction of examination to standard areas, undergoing similar cooling paths, has enabled valid comparison to be made between specimens of different composition.
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Williams, D.B., Edington, J.W. Microstructural characteristics of splatquenched aluminium-copper alloys. J Mater Sci 12, 126–130 (1977). https://doi.org/10.1007/BF00738477
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DOI: https://doi.org/10.1007/BF00738477