Amplitude Dependent Internal Friction in a Mg-Al-Zn Alloy Studied after Thermal and Mechanical Treatment

Autor: Zuzanka Trojanová, Pavel Lukáč, Ján Džugan, Kristýna Halmešová
Jazyk: angličtina
Rok vydání: 2017
Předmět:
Zdroj: Metals, Vol 7, Iss 10, p 433 (2017)
Druh dokumentu: article
ISSN: 2075-4701
DOI: 10.3390/met7100433
Popis: The amplitude-dependent internal friction of continuously-cast and rolled AZ31 magnesium alloy was measured in this study. Samples were annealed and quenched step by step; immediately after the treatment, the amplitude dependence of the logarithmic decrement was measured. Changes in the microstructure due to thermomechanical treatment were reflected in changes in the damping. Internal friction is influenced by the dislocation substructure and its modification due to solute atoms migration, microplastic deformation, and twins’ formation. Internal friction in the rolled sheets is affected by the rolling texture.
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