Conclusions
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1.
Plastic deformation in polycrystalline copper develops unevenly in the microregions in both the linear and the plane stress state (including plane stress under conditions of complex loading). A higher level of microinhomogeneity in deformation was observed in the plane stress state.
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2.
The immobilization and duplication of microcenters of increased and reduced deformation in simple loading is a general property of polycrystalline materials and is in independent of the nature of the material and the type of stress state.
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3.
The development of deformations in individual microsectors in conditions of complex loading (axial tension—uniform biaxial tension—transverse tension) differs substantially from that in simple loading. The difference lies in the varying degrees of localization of deformation of fixed microsectors.
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4.
In a plane stress state, especially under conditions of complex loading, deformation is due to the action of a larger number of slip systems than in a linear stress state; this must indicate more complex deformation conditions in the individual microvolumes.
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Additional information
Institute of Strength Problems, Academy of Sciences of the Ukrainian SSR, Kev. Volgograd Engineering and Construction Institute. Translated from Problemy Prochnosti, No. 4, pp. 10–15, April, 1976.
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Kuksa, L.V., Koval'chuk, B.I., Lebedev, A.A. et al. Plastic-deformation micropattern in metals under various loading conditions. Strength Mater 8, 393–398 (1976). https://doi.org/10.1007/BF01528091
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DOI: https://doi.org/10.1007/BF01528091