The study of internal friction in metal-metal layered materials.

Kiss S, Cseresnyés Z, Harangozó IZ (1994) The study of internal friction in metal-metal layered materials. J Alloys Compd 211-212, 498-502.

Abstract

Internal-friction and modulus measurements were made on 99.999% pure Al samples of stabilized grain structure and on the samples covered by a Cu or Zn layer produced by electrodeposition. These layered samples were heat treated in order to cause diffusion of the foreign atoms into the Al mainly along the grain boundaries. The usual grain boundary relaxation was decreased or suppressed by the foreign atoms but the Cu turned out to be more effective in this sense. For sufficiently thick Zn layers, even a new relaxational peak appeared. The essential role of the grain boundary dislocations can be concluded from the unusual isothermal results observed in the grain boundary relaxation temperature range, and from the amplitude dependence of the layered samples after heat treatment. The role of the covering Zn or Cu layer in the dynamic recrystallization under axial stress was also investigated.

Leibniz-HKI-Autor*innen

Zoltán Cseresnyés

Identifier

doi: https://doi.org/10.1016/0925-8388(94)90552-5