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Lattice Defect Research by Kossel Technique and Deformation Analysis

Published online by Cambridge University Press:  06 March 2019

Masataka Umeno,
Hideaki Kawabe and
Gunji Shinoda
Masataka Umeno
Affiliation:
Osaka University, Miyakojima, Osaka, Japan
Hideaki Kawabe
Affiliation:
Osaka University, Miyakojima, Osaka, Japan
Gunji Shinoda
Affiliation:
Osaka University, Miyakojima, Osaka, Japan
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Abstract

An electron probe microanalyzer (EPMA) was applied for the deformation analysis of aluminum single crystals. The lattice distortions caused by tensile stresses were observed by Kossel patterns, which are sensitive in their change of shape to lattice distortion. The effects of lattice distortion would appear as splitting, tearing, bending, broadening, disappearance, and shift of Kossel lines. This distortion behavior can be analyzed successfully. The jnhomogeneities and anisotropy appearing on every line were explained by the crystallographic cons (deration of slip mechanisms. The lattice distortions and corresponding changes in Kossel patterns depend on the direction of elongation ; the deformation modes of those crystals which show typical fee behavior in stress-strain curves can be reasonably explained by a fragmentation model. It was also found that there are some portions in Kossel patterns where some specific Kossel lines, i.e., {200} and {111}, are very sensitive to lattice deformation.

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Type
Research Article
Information
Advances in X-Ray Analysis , Volume 9: Fourteenth Annual Conference on Applications of X-ray Analysis, August 25-27, 1965 , 1965, pp. 23 - 34
Copyright
Copyright © International Centre for Diffraction Data 1965

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