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Superplastic behavior in as-extruded Al-Cu-Mg alloy matrix composite reinforced with 20 vol pct Si3N4 particulates

Superplastic behavior in as-extruded Al-Cu-Mg alloy matrix composite reinforced with 20 vol pct Si3N4 particulates,10.1016/0956-716X(92)90575-Y,Script

Superplastic behavior in as-extruded Al-Cu-Mg alloy matrix composite reinforced with 20 vol pct Si3N4 particulates   (Citations: 3)
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High strain rate superplasticity has been found in a new 20 vol pct Si3N4p/Al-Cu-Mg composite. The composite developed to be a finite-grained structure 3 micron in size with a very uniform distribution of Si3N4 particulates of less than 1 micron in size, fabricated by hot extrusion at 733 K with a reduction ratio of 100:1. The maximum elongation of 830 percent, which has not been previously recorded for any finite-grained superplastic composites, was recorded at 788 K at a relatively high strain rate of 0.04/s at which a relatively high m value of about 0.3 was obtained. 12 refs.
Journal: Scripta Metallurgica Et Materialia , vol. 26, no. 8, pp. 1269-1274, 1992
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