The Annals of “Dunarea de Jos” University of Galati. Fascicle IX, Metallurgy and Materials Science (Mar 2012)
Microstructural Evolution of Al 1100 Aluminum Subjected to Severe Plastic Deformation
Abstract
The goal of this document is to promote a sequence of bulk-deformation processes able to produce ultrafine grain and also nanostructured wires with adequate length to be interesting for processing in metallurgical industry. Samples of aluminum Al 1100alloy (98.41 % Al) were subjected to repetitive Equal Channel Angular Pressing at room temperature in 1 to 4 passes. Severe deformed specimens were cold classical plastic deformed in wires. Microstructural evolution and mechanical properties were investigated. Optical microscopy progression is evaluated through a sequential interrupted process on each separate ECAP pass. The XRD studies reveal the influence of SPD on grain refinement of samples. A simply and new technology for obtaining intermediary products UFG and nanocristalline wires was developed.
