par Jiang, Lin 
;Huang, G.;Godet, Stéphane ;Jonas, J.J.;Luo, Alan
Référence Materials science forum, 488-489, page (261-264)
Publication Publié, 2005
;Huang, G.;Godet, Stéphane ;Jonas, J.J.;Luo, AlanRéférence Materials science forum, 488-489, page (261-264)
Publication Publié, 2005
Article révisé par les pairs
| Résumé : | Particle-stimulated nucleation (PSN) was investigated in magnesium alloy AZ31 to study the effect of the evolution of second-phases during extrusion and other metal forming processes. Compression tests were carried out on samples taken from coarse-grained as-cast magnesium alloy billets containing a lamellar Mg17Al12 eutectic phase and (Al, Mn) particles. These revealed that particle-stimulated DRX nucleation (PSN) was taking place during hot deformation and that this is facilitated by the fragmentation of the Mg17Al12. When Mg17Al12 dissolves into the matrix at about 350 degrees C, the (Al, Mn) particles remain effective in producing PSN at temperatures up to at least 400 degrees C. This suggests that alloy design leading to a suitable distribution of second-phase particles can improve the properties and formability of wrought magnesium alloys |
