Plastic flow instability at the necking stage in zirconium alloys |
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Authors: | T M Poletika S V Kolosov G N Narimanova A P Pshenichnikov |
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Institution: | (1) Institute of Strength Physics and Materials Science, Siberian Division, Russian Academy of Sciences, Tomsk, 634021 |
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Abstract: | Regular features in plastic-strain macrolocalization are examined at the parabolic stage of strain hardening in the é635 and
Zircaloy-2 zirconium alloys. Instability of the plastic flow is observed, which is manifested as a periodic variation of space-time
distributions of local strain as revealed by means of speckle interferometry. The data obtained are discussed within the framework
of a synergetic model for the plastic flow evolution at the final stage.
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Translated from Prikladnaya Mekhanika i Tekhnicheskaya Fizika, Vol. 47, No. 3, pp. 141–149, May–June, 2006. |
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Keywords: | zirconium alloys strain localization instability fracture |
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