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Kinetics study of the spinodal decomposition in the Fe–30.8Cr–12.2Co alloy by Mössbauer spectrometry

Identifieur interne : 000D57 ( Main/Curation ); précédent : 000D56; suivant : 000D58

Kinetics study of the spinodal decomposition in the Fe–30.8Cr–12.2Co alloy by Mössbauer spectrometry

Auteurs : S. Alleg [Algérie] ; B. Bouzabata [Algérie] ; J. M. Greneche [France]

Source :

RBID : ISTEX:1C24365056F15AB244A24768E676827B9E3B910F

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English descriptors

Abstract

The phase transformation in the Fe–30.8Cr–12.2Co alloy has been studied by Mössbauer spectrometry as a function of the aging time at the temperatures 520, 560 and 600°C. It is found that the transformation occurs without any incubation time, consistent with a spinodal decomposition and that the average hyperfine field increases indicating changes of iron environments. The decomposition rate is influenced by the aging temperature and increases at higher temperatures. The kinetics of transformation can be described by an Avrami parameter smaller than 0.2 and a value of the activation energy close to 17 kJmol−1.

Url:
DOI: 10.1016/S0925-8388(98)00649-5

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ISTEX:1C24365056F15AB244A24768E676827B9E3B910F

Le document en format XML

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