Distribution of Dislocation Density in Tubes from Zr-Based Alloys by X-Ray Data

Margarita Isaenkova; Yuriy Perlovich

doi:10.4028/www.scientific.net/SSP.105.89

Paper Titles

EPSILON-MDS – A Neutron Time-of-Flight Diffractometer for Strain Measurements
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Texture Analysis with Area Detectors
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Study of Error Distribution in Measured Pole Figures
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Use of Neutron Diffraction for Describing Texture of Isostatically-Pressed Molybdite Powders
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Distribution of Dislocation Density in Tubes from Zr-Based Alloys by X-Ray Data
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Reaction Stresses among the Grains during Tensile Deformation of Polycrystalline Metals
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Texture Control in Manufacturing of ULSI Devices
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Determination of Grain-Orientation-Dependent Stress in Coatings
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On the Calculation of the Eshelby Tensor and the Beauty of our Nature
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HomeSolid State PhenomenaSolid State Phenomena Vol. 105Distribution of Dislocation Density in Tubes from...

Distribution of Dislocation Density in Tubes from Zr-Based Alloys by X-Ray Data

Abstract:

As applied to tubes from Zr-based alloys, the X-ray method was developed to determine the dislocation density distribution in a-Zr depending on the orientation of Burgers vector. The method consists in registration of X-ray line profiles by each successive position of the sample in the course of diffractometric texture measurement using reflections of two orders, the following determination of coherent domain size and lattice distortion by means of the Warren-Averbach method for each orientation of reflecting planes, separate calculation of the density of c- and a-dislocations with all possible orientations of Burgers vector and presentation of results in generalized pole figures. Obtained data testify that the dislocation density varies within very wide intervals of several orders of magnitude depending on the grain orientation both in as-rolled and annealed tubes. Features of the constructed dislocation distributions are closely related to the crystallographic texture of studied tubes.

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Periodical:

Solid State Phenomena (Volume 105)

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89-94

DOI:

https://doi.org/10.4028/www.scientific.net/SSP.105.89

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Online since:

July 2005

Authors:

Margarita Isaenkova, Yuriy Perlovich

Keywords:

Dislocation Density, Generalized Pole Figure, Texture, Tube, X-Ray Line Profile Analysis, Zirconium-Based Alloy

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[1] 10 100 Dislocation density ρc, 1014 m-2 1000 0. 1.

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[2] [4] [6] [8] Volume fraction ν, % 0. 1.

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[1] 10 100 Dislocation density ρc, 1014 m-2 1000 0, 01 0, 01 Figure 6. Distributions of volume fractions ν(ρc) for α-Zr of Zr-1%Nb tube 9 mm in diameter : a - deformed condition, ε=80%; b - annealed condition, 480°C / 3 h. b a.

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