Plastic deformation in an Al–Cu–Fe icosahedral alloy
- 1 June 1993
- journal article
- Published by Springer Nature in Journal of Materials Research
- Vol. 8 (6) , 1199-1202
- https://doi.org/10.1557/jmr.1993.1199
Abstract
Al—Cu—Fe quasicrystalline alloys have been deformed by high-temperature creep between 680 and 740 °C. Deformations greater than 30% were achieved without cracking. Analysis of the data in the quasi-steady state regime reveals power law behavior with a stress exponent of 2.5. The activation energy for deformation was determined to be 640 ± 20 kJ/mole in the temperature region investigated. Transmission electron microscopy revealed lamellar defects which appear similar to twins.Keywords
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