The structure of directionally frozen Al–CuAl 2 eutectic alloy
1969; Taylor & Francis; Volume: 19; Issue: 162 Linguagem: Inglês
10.1080/14786436908228650
ISSN0031-8086
Autores Tópico(s)Aluminum Alloys Composites Properties
ResumoAbstract Abstract The structure of Al–CuAl2 eutectic alloy has been examined by transmission electron microscopy. The orientations of phases and of preferred lamellar interfaces have been determined and it is shown how small deviations from these preferred orientations are accommodated by tilt and/or twist boundaries. The dislocation structures of sub-boundaries and of the semicoherent phase boundaries are illustrated. The hardness of the eutectic material is more sensitive to the rate of cooling in the solid state than it is to the lamellar spacing and the dislocation distribution in quenched and slowly cooled alloy is compared.
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