Microstructure Evolution of AA3003 Aluminum Alloys Enhanced by Zirconium Addition Studied by Electron Microscopy
2015
Abstract
Zirconium added to aluminium alloys may under suitable conditions form metastable cubic precipitates Al3Zr, which pin moving grain boundaries and thus shift recrystallization to higher temperatures. Twinroll cast AA3003 aluminium alloy cold-rolled to 5 and 1 mm was subjected to several annealing steps in order to find ideal conditions for precipitation of Al3Zr phase.