Electron-irradiation-induced nano-crystallization in quasicrystal-forming Zr-based metallic glass

Electron-irradiation-induced nano-crystallization in quasicrystal-forming Zr-based metallic glass

Phase selection in electron-irradiation-induced crystallization and crystal-to-amorphous-to-crystal (C–A–C) transition at 298 K in quasicrystal-forming Zr–Pt metallic glass alloys were investigated. Two types of f.c.c. nano-crystalline precipitates were formed in amorphous Zr 80Pt 20 and Zr 66.7Pt 3...

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Veröffentlicht in:Intermetallics 2009-08, Vol.17 (8), p.657-668
Hauptverfasser: Nagase, Takeshi, Hosokawa, Takashi, Takizawa, Kazuya, Umakoshi, Yukichi
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Sprache:eng
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B. Irradiation effects
B. Metallic glasses
B. Phase transformation
C. Nanocrystals
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container_issue 8
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container_title Intermetallics
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creator Nagase, Takeshi
Hosokawa, Takashi
Takizawa, Kazuya
Umakoshi, Yukichi
description Phase selection in electron-irradiation-induced crystallization and crystal-to-amorphous-to-crystal (C–A–C) transition at 298 K in quasicrystal-forming Zr–Pt metallic glass alloys were investigated. Two types of f.c.c. nano-crystalline precipitates were formed in amorphous Zr 80Pt 20 and Zr 66.7Pt 33.3 alloys under electron irradiation; such unique nano-crystalline structures were not observed during thermal annealing. It was inferred that unique phase selection in electron-irradiation-induced crystallization and thermal crystallization can be explained by the large negative chemical mixing enthalpy (Δ H chem) in Zr–Pd and Zr–Pt alloys.
doi_str_mv 10.1016/j.intermet.2009.02.009
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subjects B. Irradiation effects
B. Metallic glasses
B. Phase transformation
C. Nanocrystals
title Electron-irradiation-induced nano-crystallization in quasicrystal-forming Zr-based metallic glass
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