Relaxation mechanism of plastic deformation and its justification using the example of the sharp yield point phenomenon in whiskers

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• 作者：Yu. V. Petrov (1) (2)
  E. N. Borodin (1) (3)
  
  1. Institute of Problems of Mechanical Engineering ; Russian Academy of Sciences ; Bolshoi pr. 61 ; St. Petersburg ; 199178 ; Russia
  2. Saint Petersburg State University ; Universitetskaya nab. 7/9 ; St. Petersburg ; 199034 ; Russia
  3. Chelyabinsk State University ; ul. Brat鈥檈v Kashirinykh 129 ; Chelyabinsk ; 454001 ; Russia
  
• 刊名：Physics of the Solid State
• 出版年：2015
• 出版时间：February 2015
• 年：2015
• 卷：57
• 期：2
• 页码：353-359
• 全文大小：268 KB
• 参考文献：1. M. A. Meyers and K. K. Chawla, / Mechanical Behavior of Materials (Cambridge University Press, New York, 2009).
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• 刊物类别：Physics and Astronomy
• 刊物主题：Physics
  Solid State Physics and Spectroscopy
  Russian Library of Science
  
• 出版者：MAIK Nauka/Interperiodica distributed exclusively by Springer Science+Business Media LLC.
• ISSN：1090-6460

文摘

The generality of the dynamic approach to a wide range of problems of the continuum mechanics, including deformation at the rates determining quasi-static deformation conditions has been demonstrated using the example of deformation of cadmium and copper whiskers. The sharp yield point phenomenon has been analyzed in terms of the theory of dislocations and phenomenological integrated criteria of plasticity. It has been shown that the characteristic relaxation times used in these criteria, regardless of the applied model of plasticity, reflect essential properties of the very deformation process itself.