Kinetics of σ-phase formation in equiatomic cold-rolled Fe-V alloys

被引：10

作者：

Costa, B. F. O. ^{[1
]}

Cieslak, J. ^{[2
]}

Dubiel, S. M. ^{[2
]}

机构：

[1] Univ Coimbra, CEMDRX Dept Phys, P-3004516 Coimbra, Portugal

[2] AGH Univ Sci & Technol, Fac Phys & Appl Comp Sci, PL-30059 Krakow, Poland

来源：

MATERIALS CHEMISTRY AND PHYSICS | 2013年 / 143卷 / 01期

关键词：

Alloys; Magnetic materials; Annealing; Mossbauer spectroscopy; X-ray scattering; Phase transitions; CR-SN ALLOYS; MOSSBAUER; SYSTEM; TRANSFORMATIONS; TIN;

D O I：

10.1016/j.matchemphys.2013.07.020

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The kinetics of alpha-to-sigma phase transformation in equiatomic Fe-V cold-rolled alloys was studied by the Mossbauer spectroscopy (MS) and X-ray diffraction (XRD) techniques. The kinetics could be well-described in terms of the Johnson-Mehl-Avrami-Kolmogorov type equation. The activation energy has been determined as being 189 kJ mol(-1) and the Avrami exponent as close to 3. The sigma-phase precipitation rate was found to be the highest at 800 degrees C. Prior to the formation of the sigma-phase the ordered B2 phase was revealed, as a precursor of sigma, by both MS and XRD techniques. (C) 2013 Elsevier B.V. All rights reserved.

引用

页码：19 / 25

页数：7

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