On the activation energy of the σ-phase formation in a pure and Ti-doped Fe-Cr alloy

被引：13
|
作者：
Blachowski, A [1 ]
Dubiel, SM [1 ]
Zukrowski, J [1 ]
机构：
[1] Stanislaw Staszic Univ Min & Met, AGH, Fac Phys & Nucl Techniques, PL-30059 Krakow, Poland
来源：
INTERMETALLICS | 2001年 / 9卷 / 06期
关键词：
intermetallics; miscellaneous; phase transformations; heat treatment;
D O I：
10.1016/S0966-9795(01)00029-2
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：
The sigma -phase formation in Fe53.8Cr46.2 and Fe(53.8)Cr(46.2-0.3)at%Ti by isothermal annealing in the temperature interval of 923-1003 K was investigated in situ by Fe-57 Mossbauer spectroscopy. The process of transformation was succesfully analyzed using the Johnson-Avrami-Mehl equation, and it was quantitatively described in terms of the activation energy, E which was determined by several methods. The best-value of E as average of all data was found to be equal to 192 +/-2 kJ/mol for the Fe-Cr sample and to 153 +/-2 kJ/mol for that doped with Ti. (C) 2001 Elsevier Science Ltd. All rights reserved.
引用
收藏
页码：493 / 498
页数：6
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