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Stress Relaxation in Magnesium at Low Temperatures

✍ Scribed by P. Feltham

Publisher
John Wiley and Sons
Year
1963
Tongue
English
Weight
390 KB
Volume
3
Category
Article
ISSN
0370-1972

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✦ Synopsis

Abstract

Logarithmic stress relaxation in polycrystalline magnesium of 99.999% purity was studied at strains of up to 4% at 77‐295 Β°K. The energy barrier of 0.74 Β± 0.05 eV, associated with the relaxation, was found to be numerically equal to that known to control the temperature dependence of the flow stress of magnesium single crystals in simple glide. The observations are explained on the assumption that the relaxation arises from residual glide of basal dislocations impeded by the frictional drag of elementary intersection jogs.

πŸ“œ SIMILAR VOLUMES

Stress relaxation in graphite at high te
Stress relaxation in graphite at high temperatures
✍ C.P. Wade; P.P. Gillis πŸ“‚ Article πŸ“… 1969 πŸ› Elsevier Science 🌐 English βš– 316 KB

work is necessary in this field. More experimental evidence would be equally useful, particulary concerning carbon blacks, for which the graphitic structure may also be considered as nearly twodimensional. Such studies are under way in our laboratory.