Deformation characteristics of rolled zirconium alloys: a study by X-ray diffraction line profile analysis

Different techniques of the X-ray diffraction line profile analysis (XRDLPA) have been used to study the microstructural parameters of the heavily deformed solid polycrystalline Zircaloy-2 and Zr–2.5%Nb alloys. The domain size, microstrain within the domain, dislocation density and the stacking faul...

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Bibliographic Details
Published in:Acta materialia 2004-11, Vol.52 (19), p.5687-5696
Main Authors: Mukherjee, P., Sarkar, A., Barat, P., Bandyopadhyay, S.K., Sen, Pintu, Chattopadhyay, S.K., Chatterjee, P., Chatterjee, S.K., Mitra, M.K.
Format: Article
Language:English
Subjects:
ANISOTROPY
Cross-disciplinary physics: materials science
rheology
DEFORMATION
Deformation, plasticity, and creep
DISLOCATIONS
Domain size
Exact sciences and technology
MATERIALS SCIENCE
MICROSTRUCTURE
NIOBIUM ALLOYS
Physics
STACKING FAULTS
Treatment of materials and its effects on microstructure and properties
X-ray
X-RAY DIFFRACTION
ZIRCALOY 2
ZIRCONIUM ALLOYS
Zirconium based alloys
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Summary:Different techniques of the X-ray diffraction line profile analysis (XRDLPA) have been used to study the microstructural parameters of the heavily deformed solid polycrystalline Zircaloy-2 and Zr–2.5%Nb alloys. The domain size, microstrain within the domain, dislocation density and the stacking fault probabilities have been estimated by the Simplified Breadth Method, Williamson–Hall technique and the Modified Rietveld Method. A clear signature of the anisotropy in the domain shape was revealed. The domain size ( D e) was quantified along the different crystallographic directions. In these deformed alloys, the dislocation density ( ρ e) was of the order of 10 15 m −2 but the stacking fault probabilities were almost negligible. For the first time, we could establish an empirical relationship between D e and ( ρ e ) - 1 2 for these hexagonal closed packed alloys.
ISSN:1359-6454
1873-2453
DOI:10.1016/j.actamat.2004.08.030