MECHANISM OF GRAIN REFINEMENT IN ALUMINIUM ALLOYS IN THE PROCESS OF HYDROSTATIC EXTRUSION
Warsaw University of Technology, Faculty of Materials Science and Engineering (InMat), Wołoska 141, Warszawa 02-507, Poland
Hydrostatic extrusion (HE) is one of the methods that enable relatively high strains. Its unique features are three-axial compressive stresses within the billet and high strain rates. This results in a rapid processing under high pressure and may provide a new opportunity for suppressing recovery and possible grain growth in heavily deformed materials. This work describes the microstructure evolutions and mechanisms of grain refinement in aluminium alloys processed by this deformation method.
Presentation: oral at E-MRS Fall Meeting 2005, Symposium I, by Malgorzata Lewandowska
See On-line Journal of E-MRS Fall Meeting 2005
Submitted: 2005-05-17 07:41 Revised: 2009-06-07 00:44