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1994 | 85 | 3 | 571-578
Article title

High-Temperature X-ray Diffraction Studies of Lattice Dynamics in Ni_{3}(Fe,Nb) Ordered Alloys

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Languages of publication
EN
Abstracts
EN
A study is performed on characteristics of lattice dynamics in the initially ordered ternary Ni_{3}(Fe_{1-x}Nb_{x}) (x = O to 10 at.%) alloys using high temperature X-ray diffractometry for the temperature range from 300 K to 1300 K. Aspects investigated included temperature and concentration dependencies of the full mean square atomic displacements Ū²_{f}, the Debye characteristic temperature Θ_{D}, and linear thermal expansion coefficient α. It is found that the Ū²_{f}, Θ_{D}, and α parameters show anomalous change at temperatures where the alloys are subjected to order-disorder phase transitions. It is further found that Nb addition results in the considerable increase in the parameters Ū²_{f} and α and decrease in Θ_{D}. Moreover, the addition of Nb stabilizes Ni_{3}Fe ordered structure and shifts the order-disorder transition to higher temperature.
Keywords
EN
Publisher

Year
Volume
85
Issue
3
Pages
571-578
Physical description
Dates
published
1994-03
received
1993-08-03
(unknown)
1993-11-16
Contributors
author
  • Department of Metallurgical Engineering, Middle East Technical University, 06531 Ankara, Turkey
References
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Publication order reference
Identifiers
YADDA identifier
bwmeta1.element.bwnjournal-article-appv85z309kz
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