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2004 | Vol. 56, nr 6 | 465-484
Tytuł artykułu

Bifurcation into shear bands on the Bishop and Hill polyhedron. Part 2, Case of the vertices

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Warianty tytułu
Języki publikacji
EN
Abstrakty
EN
The present paper is the second of a series of three papers devoted to the micro-mechanical conditions which render possible the appearance of shear bands in crystalline materials. It focuses on the deformation at the vertices of the Bishop and Hill polyhedron, which are important because most of the shear bands originate at the grain boundaries where many slip systems are active. The conditions of bifurcation are analysed on the scale of the slip systems by crystallographic class of vertices. An application is given in the case of channel-die compression and it shows that the texture components are unequally liable to shear banding, the Copper one, for example, being more sensitive than Goss, as known experimentally. There is also a good agreement of the predictions with the geometry of the bands, especially the characteristic feature of the inclination at 35o with respect to the rolling axis. Considerations follow on the actual implementation, by micro-structural phenomena, of the localization whose mechanical possibility has been discussed in the article.
Wydawca

Rocznik
Strony
465-484
Opis fizyczny
Bibliogr. 24 poz.
Twórcy
autor
  • SMS, R3M, UMR CNRS 5146, Ecole Nationale Superieure des Mines de Saint-Etienne, 158 cours Fauriel, 42023 Saint-Etienne cedex 2, France
Bibliografia
Typ dokumentu
Bibliografia
Identyfikatory
Identyfikator YADDA
bwmeta1.element.baztech-article-BAT4-0004-0022
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