Crystallization of Fe75Zr25 metallic glass: a two-step process involving metastable bcc-Fe and polymorphic transformation

被引：19
作者：
Gorria, Pedro [1 ]
Garitaonandia, Joseba S. [2 ]
Perez, Maria J. [1 ]
Blanco, Jesus A. [1 ]
Campo, Javier [3 ,4 ]
机构：
[1] Univ Oviedo, Dept Fis, E-33007 Oviedo, Spain
[2] Univ Basque Country, Dept Fis Aplicada 2, Bilbao 48080, Spain
[3] Univ Zaragoza, CSIC, Inst Ciencia Mat Aragon, E-50009 Zaragoza, Spain
[4] Inst Max Von Laue Paul Langevin, F-38042 Grenoble, France
来源：
PHYSICA STATUS SOLIDI-RAPID RESEARCH LETTERS | 2009年 / 3卷 / 01期
关键词：
NEUTRON THERMO-DIFFRACTOMETRY; AMORPHOUS-ALLOYS; MAGNETIZATION; MOSSBAUER; ZR;
D O I：
10.1002/pssr.200802241
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The crystallization process of mechanically alloyed Fe75Zr25 metallic glasses is investigated by means of both thermo-magnetization and in situ neutron powder thermo-diffraction experiments in the temperature range 300-1073 K. It was found that the crystallization takes place in a two-step process, involving firstly the appearance of metastable Fe and Fe2Zr crystalline phases between 880 K and 980 K, and a subsequent polymorphic transformation into Fe3Zr above 980 K. These findings explain the anomalous magnetization vs. temperature behaviour on heating-cooling cycles. [GRAPHICS] Contour plot of the neutron diffracted intensity (lambda = 1.28 angstrom) as a function of the Bragg diffraction angle and the temperature, (C) 2009 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
引用
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页码：28 / 30
页数：3
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