Metal Plasticity as a Problem of Thermodynamics
The lecture presented at the Symposium was based on two recent papers [1, 2], each of them representing the text of an invited lecture.
There exists a well-developed empirical theory of plastic deformation in metals which allows engineers successfully to predict the behavior of a variety of structures and machine elements loaded beyond the elastic limit for purposes of design. This theory rests, essentially, on a number of ad hoc assumptions. Many attempts have been made to fit this phenomenon into the formalism of thermodynamics to provide for it a securer scientific basis. Much progress in this direction has already been made. However, none of the proposals advanced so far has met with general acceptance.
KeywordsInternal Variable Helmholtz Free Energy Metal Sample Reversible Path Metal Plasticity
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- 1.Kestin, J.; Thermodynamics of plastic deformation. Article in “Patterns, Defects and Microstructures in Nonequilibrium Systems”, D. Walgraef (ed.) Martinus Nijhof Publishers, 1987.Google Scholar
- 2.Kestin, J.; Metal plasticity as a problem in thermodynamics. Proceedings of IUTAM Symposium on Thermomechanical Coupling in Solids. Paris, September 1-5, 1986.Google Scholar
- 3.Bridgman, P.W.; The nature of thermodynamics, Harper, 1961.Google Scholar