Abstract
Hexagonal closed packed metals like zirconium are inherently anisotropic and deformation during processing leads to the development of preferred orientation or texture in the finished product. The texture is known to affect the yield properties of the finished product. Tube Reduced Extrusions (TREX’s) are an intermediate product in the production of ZIRCALOY-4* canning tubes for the nuclear industry. The use of the impression test for measuring mechanical anisotropy is demonstrated in this paper. The effect of textural variations due to changes in annealing temperature of ZIRCALOY-4 TREX on room temperature yield anisotropy has been studied. Recrystallization of the asreceived/cold-worked TREXdoes not reduce the degree of anisotropy in the TREX but influences its nature. The results are analyzed both in terms of qualitative pole-figures as well as the upper bounding Bishop-Hill plasticity model using quantitative CODF descriptions. The qualitative pole-figure analyses were found to inadequately predict the anisotropy. The upper bound plasticity model successfully predicts the yield anisotropy of TREX at room temperature.
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ZIRCALOY is a trademark of Westinghouse Electric Company.
P. S. Godavarti, Formerly with the Department of Nuclear Engineering, North Carolina State University, Raleigh, NC 27695
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Godavarti, P.S., Hussien, S. & Murty, K.L. Effect of annealing temperature on yield anisotropy of ZIRCALOY-4 TREX. Metall Trans A 19, 1243–1255 (1988). https://doi.org/10.1007/BF02662585
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DOI: https://doi.org/10.1007/BF02662585