Abstract
The plastic torsion of whiskers with high Peierls barriers has been studied. As the samples for the studies we chose p-type germanium whiskers with <111> growth axis. The diameter of the whisker was (5–60)·10−6 m and the gauge length was (1–4)·10−3 m. The whiskers were dislocation-free in the initial state. Within the framework of the continuum model developed by us for the plastic deformation of whiskers under torsion, we analyze the anomalies of the torsional stress-strain diagram under different testing conditions and with preliminary deformation. The “flow tooth” during the torsion of a whisker is attributable to the nonuniform distribution of dislocations over the cross section of the whisker and high barriers to the dislocation motion.
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Translated from Izvestiya Vysshikh Uchebnykh Zavedenii, Fizika, No. 7, pp. 3–8, July, 1987.
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Bataronov, I.L., Belikov, A.M., Drozhzhin, A.I. et al. Nature of the “yield tooth” under torsion in plastic-deformed whiskers. Soviet Physics Journal 30, 565–569 (1987). https://doi.org/10.1007/BF00895217
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DOI: https://doi.org/10.1007/BF00895217