Frontiers of Materials Science >
On the Taylor principles for plastic deformation of polycrystalline metals
Received date: 10 Aug 2016
Accepted date: 22 Sep 2016
Published date: 24 Nov 2016
Copyright
Grain orientation evolutions and texture formation based on the Taylor principles offer important references to reveal crystallographic mechanisms of deformation behaviors. Strain equilibrium between grains is achieved in Taylor theory, however, stress equilibrium has not yet been reached perfectly even in many modifications of the theory though the textures predicted become very close to those of experimental observations. A reaction stress model is proposed, in which mechanical interactions between grains are considered in details and grain deformation is conducted by penetrating and non-penetrating slips. The new model offers both of the stress and strain equilibria and predicts the same textures indicated by Taylor theory. The rolling texture simulated comes very close to the experimental observations if the relaxation effect of the non-penetrating slips on the up-limits of reaction stresses is included. The reaction stress principles open theoretically a new field of vision to consider deformation behaviors of polycrystalline materials, whereas the Taylor principles become unnecessary both theoretically and practically. Detailed engineering conditions have to be included in simulations if the deformation textures of industrial products should be predicted.
Weimin MAO . On the Taylor principles for plastic deformation of polycrystalline metals[J]. Frontiers of Materials Science, 2016 , 10(4) : 335 -345 . DOI: 10.1007/s11706-016-0358-4
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