Matériaux & Techniques
Volume 73, Number 8-9, 1985
|Page(s)||E5 - E19|
|Published online||21 April 2017|
L’effet portevin-le chatelier ses caractéristiques et ses conséquences sur les hétérogénéités de déformation plastique
The Portevin-Le Chatelier effect as a process of heterogeneous plastic deformation feature and origin
Professeur Emérite, Université Paris-Sud-Orsay Membre de l’Académie des Sciences-France
The Portevin-Le Chatelier (PLC) effect is characterized by some successive serrations on tensile curves of some metals containing intertitial or substitional additions. This effect appears on a strain range which depends on the content in addition elements, the temperature and the rate by straining. The PLC is due to the propagation of plastic waves through the length of tensile specimen. Different theories were proposed in order to explain this PLC effect in terms of interaction between mobile dislocations and “atmospheres” of addition element.
© SIRPE 1985
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