Abstract
Abstract The fracture mechanisms in tension were analyzed in a peak-aged 8090 Al–Li alloy and 8090 Al–Li/SiC as a function of temperature. Failure in the alloy changed from intergranular fracture at ambient temperature to ductile void growth above 150 °C, leading to a tenfold increase in the elongation to failure. Damage in the composite was always nucleated by particle fracture, and the ductility, which was controlled by the onset of plastic instability, increased moderately with temperature.
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