Metal Science and Heat Treatment

, Volume 54, Issue 5–6, pp 234–238 | Cite as

Low-temperature internal friction and nanostructured metal stability

  • P. P. Pal’-Val’
  • L. N. Pal’-Val’
Nanocrystalline Materials, High Damping Alloys, Structural and Phase Transformations

The effect of aging at room temperature after equal-channel angular pressing and annealing on parameters of the low-temperature relaxation peak and dynamic Young’s modulus in nanostructured copper is studied. The dislocation nature of the peak is established. It is shown that the high rate of change for all peak parameters is observed close to the copper static relaxation temperature. The data obtained are in good agreement with results of high-temperature in situ changes of elasticity modulus and microhardness.

Key words

nanostructured materials low temperatures acoustic properties dislocations annealing 


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Copyright information

© Springer Science+Business Media New York 2012

Authors and Affiliations

  1. 1.B. I. Verkin Physicotechical Institute of Low TemperaturesUkrainian National Academy of SciencesKharkovUkraine

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