We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Analysis of strengthening mechanisms in a severely-plastically-deformed Al–Mg–Si alloy with submicron grain size.
- Authors
Morris, D. G.; Gutierrez-Urrutia, I.; Muñoz-Morris, M. A.
- Abstract
Methods of severe plastic deformation of ductile metals and alloys offer the possibility of processing engineering materials to very high strength with good ductility. After typical amounts of processing strain, a submicrocrystalline material is obtained, with boundaries of rather low misorientation angles and grains containing a high density of dislocations. In the present study, an Al–Mg–Si alloy was severely plastically deformed by equal channel angular pressing (ECAP) to produce such a material. The material was subsequently annealed for dislocation recovery and grain growth. The strength of materials in various deformed and annealed states is examined and the respective contributions of loosely-arranged dislocations, many grain boundaries, as well as dispersed particles are deduced. It is shown that dislocation strengthening is significant in as-deformed, as well as lightly annealed materials, with grain boundary strengthening providing the major contribution thereafter.
- Subjects
DEFORMATIONS (Mechanics); METAL formability; DUCTILITY; METALS; DISLOCATIONS in metals; CRYSTAL grain boundaries; ALUMINUM alloys; STRENGTH of materials
- Publication
Journal of Materials Science, 2007, Vol 42, Issue 5, p1439
- ISSN
0022-2461
- Publication type
Article
- DOI
10.1007/s10853-006-0564-z