Development of the Double Amplitude Internal Friction Peaks in Cold‐Worked Aluminium–Magnesium Solid Solutions

Q. Tan*, T. S. KÊC (Tingsui Ge)

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

2 Scopus citations

Abstract

Previous works show that two internal friction peaks versus strain amplitude appear around room temperature in cold‐worked and partially annealed dilute solid solutions of AlMg. The lower amplitude peak (LAP) and the higher amplitude peak (HAP) are ascribed to longitudinal core diffusion (LCD) and transverse core diffusion (TCD), respectively of the solute atoms during the to and fro sidewise motion of the dislocation kinks. Further studies are made on the effect of annealing, ageing, and deformation on the development of such double amplitude internal friction peaks and their correlation with the double temperature internal friction peaks (P1′ and P1″). It is suggested that a comprehensive theoretical treatment of these experimental results in terms of the kink model in combination with the mathematical formulation developed for the string model is desirable.

Original languageEnglish
Pages (from-to)345-354
Number of pages10
Journalphysica status solidi (a)
Volume126
Issue number2
DOIs
StatePublished - 16 Aug 1991
Externally publishedYes

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