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Journal of Materials Science

, Volume 28, Issue 4, pp 989–993 | Cite as

Non-linear response of internal friction to tensile strain rate and frequency during plastic deformation of high-purity aluminium

  • J. X. Zhang
  • J. K. L. Lai
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  • 42 Downloads

Abstract

The internal friction of high-purity aluminium during the process of plastic deformation was measured by a middle torsion pendulum on a modified tensile testing machine. The effects of tensile strain rate, \(\dot \varepsilon \), in the range of 0.73×10−6 to 50×10−6s−1, and frequency of internal friction measurement, f, in the range of 0.38 to 2.6 Hz were studied. The results showed a non-linear dependence of internal friction, Q−1, on \(\dot \varepsilon \) and f−1 or on \(\dot \varepsilon /\omega \) (ω=2π f). The interrelationship between internal friction during the process of plastic deformation and dislocation motion, and the effect of non-linearity on the dynamic behaviour of dislocations are discussed.

Keywords

Polymer Aluminium Plastic Deformation Tensile Testing Dynamic Behaviour 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Chapman & Hall 1993

Authors and Affiliations

  • J. X. Zhang
    • 1
  • J. K. L. Lai
    • 2
  1. 1.Department of Physics and Institute of Material ScienceZhongshan UniversityGuangzhouPeople’s Republic of China
  2. 2.Department of Applied ScienceCity Polytechnic of Hong KongKowloonHong Kong

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