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CRYSTALLIZATION KINETICS OF QUASICRYSTALLINE DECAGONAL PHASE IN RAPIDLY QUENCHED Al80Mn20 ALLOY

WANG YUAN-SHENG WU ZI-QIN WU QIN-CHONG HE YI-ZHEN

CRYSTALLIZATION KINETICS OF QUASICRYSTALLINE DECAGONAL PHASE IN RAPIDLY QUENCHED Al80Mn20 ALLOY

WANG YUAN-SHENG, WU ZI-QIN, WU QIN-CHONG, HE YI-ZHEN
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  • Received Date:  27 July 1987
  • Published Online:  06 July 2005

CRYSTALLIZATION KINETICS OF QUASICRYSTALLINE DECAGONAL PHASE IN RAPIDLY QUENCHED Al80Mn20 ALLOY

  • 1. (1)中国科学技术大学; (2)中国科学院固体物理研究所

Abstract: The crystallization kinetics of quasicrystalline decagonal phase in a rapidly quenched Al80Mn20 alloy has been investigated. The results of DSC experiments show that the activation energy for crystallization is a constant during the whole process. The experimental curve showing kinetic mechanism of crystallization has been obtained. The activation energy and frequency factor are determined to be 224 kJ/nol and 1.2×1012/s, respectively, The analysts of the kinetics indecates that the crystallization of decagonal phase is controlled by long range atomic diffusion, and the nucleation rate should be zero during the process.

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