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Plastic deformation in an Al–Cu–Fe icosahedral alloy

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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.

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Shield, J.E., Kramer, M.J. & McCallum, R.W. Plastic deformation in an Al–Cu–Fe icosahedral alloy. Journal of Materials Research 8, 1199–1202 (1993). https://doi.org/10.1557/JMR.1993.1199

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  • DOI: https://doi.org/10.1557/JMR.1993.1199

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