| Titre : | ECAP with back pressure for optimum strength and ductility in aluminium alloy 6016 : Part 2: Mechanical properties and texture (2011) |
| Auteurs : | P.W.J. Mckenzie, Auteur ; R. Lapovok, Auteur |
| Type de document : | Article : texte imprimé |
| Dans : | Acta materialia (Vol. 58 N° 9, Mai 2010) |
| Article en page(s) : | pp. 3212–3222 |
| Note générale : | Métallurgie |
| Langues : | Anglais |
| Tags : | Equal channel angular pressing (ECAP) Ultrafine grained (UFG) Aluminium alloy 6016 Tensile test Strain hardening |
| Résumé : | The simultaneous increase in strength and ductility of aluminium alloy 6016 processed by equal channel angular pressing (ECAP) was investigated. A complete study of microstructure, texture and mechanical properties after ECAP processing with and without back pressure was carried out for the O temper. The simultaneous increase in strength and ductility of AA6016-O with number of ECAP passes was explained by the use of back pressure during ECAP. A maximum ductility of ∼100% was obtained at the temperature of 200 °C and strain rate of 10−4 s−1, which is a significant improvement on the ductility exhibited by AA6016 (∼89%) after a conventional thermomechanical treatment at a much higher temperature of 500 °C. The mechanical behaviour was interpreted in the context of the textures developed in the material. A significant amount of texture rotation due to applied back pressure was found. |
| DEWEY : | 669 |
| ISSN : | 1359-6454 |
| En ligne : | http://www.sciencedirect.com/science/article/pii/S1359645410000510 |
