Acta Mechanica Sinica

, Volume 34, Issue 2, pp 327–333 | Cite as

Investigation on the plastic work-heat conversion coefficient of 7075-T651 aluminum alloy during an impact process based on infrared temperature measurement technology

  • Tong Zhang
  • Ze-Rong Guo
  • Fu-Ping Yuan
  • Hu-Sheng Zhang
Research Paper


The plastic work-heat conversion coefficient is one key parameter for studying the work-heat conversion under dynamic deformation of materials. To explore this coefficient of 7075-T651 aluminum alloy under dynamic compression, dynamic compression experiments using the Hopkinson bar under four groups of strain rates were conducted, and the temperature signals were measured by constructing a transient infrared temperature measurement system. According to stress versus strain data as well as the corresponding temperature data obtained through the experiments, the influences of the strain and the strain rate on the coefficient of plastic work converted to heat were analyzed. The experimental results show that the coefficient of plastic work converted to heat of 7075-T651 aluminum alloy is not a constant at the range of 0.85–1 and is closely related to the strain and the strain rate. The change of internal structure of material under high strain rate reduces its energy storage capacity, and makes almost all plastic work convert into heat.


Plastic work-heat conversion coefficient Infrared temperature measurement Dynamic compression 7075-T651 Aluminum alloy 



This work was supported by the National Nature Science Foundation of China (Grants 11132011 and 11472288).


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Copyright information

© The Chinese Society of Theoretical and Applied Mechanics; Institute of Mechanics, Chinese Academy of Sciences and Springer-Verlag Berlin Heidelberg 2017

Authors and Affiliations

  • Tong Zhang
    • 1
    • 2
  • Ze-Rong Guo
    • 1
  • Fu-Ping Yuan
    • 2
  • Hu-Sheng Zhang
    • 2
  1. 1.State Key Laboratory of Explosion Science and TechnologyBeijing Institute of TechnologyBeijingChina
  2. 2.State Key Laboratory of Nonlinear Mechanics, Institute of MechanicsChinese Academy of SciencesBeijingChina

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