Mechanical Behavior of AA6061 Aluminum in the Semisolid State Obtained by Partial Melting and Partial Solidification |
| |
Authors: | E Giraud M Suery M Coret |
| |
Affiliation: | 1.SIMaP,Universités de Grenoble, CNRS UMR5266,Saint Martin d’Hères Cedex,France;2.LaMCoS,INSA-Lyon, CNRS UMR5259,Villeurbanne,France |
| |
Abstract: | The tensile properties of a 6061 aluminum alloy have been studied in the semisolid state at large solid fractions. The tests
have been carried out either after a partial melting treatment or after partial solidification. Results show the following:
(1) the mechanical behavior depends on the liquid-phase distribution and, therefore, on the way the semisolid state has been
achieved (melting or solidification); (2) there is a critical solid fraction range where the semisolid alloy is relatively
brittle; and (3) the mushy alloy exhibits viscoplastic behavior with the occurrence of micro-superplasticity at low strain
rate. Modeling of this behavior is carried out by considering either the area fraction of grain boundaries wetted by the liquid
or a cohesion parameter of the solid phase, which depends on solid fraction and thermal treatment. |
| |
Keywords: | |
本文献已被 SpringerLink 等数据库收录! |
|