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

被引：15
|
作者：
Nagase, Takeshi [1 ,2 ]
Hosokawa, Takashi [2 ]
Takizawa, Kazuya [2 ]
Umakoshi, Yukichi [3 ]
机构：
[1] Osaka Univ, Res Ctr Ultra High Voltage Elect Microscopy, Osaka 5670047, Japan
[2] Osaka Univ, Div Mat & Mfg Sci, Grad Sch Engn, Suita, Osaka 5650871, Japan
[3] Natl Inst Mat Sci, Tsukuba, Ibaraki 30500471, Japan
来源：
INTERMETALLICS | 2009年 / 17卷 / 08期
关键词：
Metallic glasses; Irradiation effects; Phase transformation; Nanocrystals; INDUCED PHASE-TRANSFORMATION; AMORPHOUS-ALLOYS; THERMAL-STABILITY; ZR66.7CU33.3; BEHAVIOR; TRANSITION; NI; PD; NANOCRYSTALLIZATION; AMORPHIZATION;
D O I：
10.1016/j.intermet.2009.02.009
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
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(80)Pt(20) and Zr(66.7)Pt(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 (Delta H(chem)) in Zr-Pd and Zr-Pt alloys. (C) 2009 Elsevier Ltd. All rights reserved.
引用
收藏
页码：657 / 668
页数：12
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