Abstract
The crystallization mode of the Zr–Al–Ni–Cu amorphous alloys changed from a single stage to become two stages by the addition of Ag or Pd, and the first-stage exothermic reaction was found to result from the precipitation of nanoscale icosahedral particles with a size of 20 to 50 nm. The precipitation took place by high nucleation and low growth rates in a polymorphous mode for the Ag-containing alloys, and a diffusioncontrolled mode for the Pd-containing alloys. The nanoscale mixed structure alloys exhibited improved strength and ductility as compared with the corresponding amorphous single-phase alloys. The findings of the dispersion strengthening as well as the dispersion ductilization gave a future opportunity to fabricate a new bulk nonequilibrium phase alloy by use of the new phenomenon.
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01 June 2018
An Erratum to this paper has been published: https://doi.org/10.1557/jmr.2018.47
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Inoue, A., Zhang, T., Chen, M.W. et al. RETRACTED – Formation and properties of Zr-based bulk quasicrystalline alloys with high strength and good ductility. Journal of Materials Research 15, 2195–2208 (2000). https://doi.org/10.1557/JMR.2000.0316
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DOI: https://doi.org/10.1557/JMR.2000.0316