Candice Mias

To investigate the effect of processing parameters on the microstructural evolution and texture development in AA3104 aluminium alloy during hot rolling on a reversing mill
TAA3104 aluminium alloy is used for the production of can body stock sheet material. The rolled sheet is manufactured through the hot rolling process which involves deformation at elevated temperatures. Hot deformation results in a difference in the volume fraction of the cube texture after recrystallization, hence affecting the microstructural evolution and texture development within the aluminium. An inconsistent cube texture generates positive 0/90° ears at the edges of the strip at final cold rolled gauge due to incomplete rotation of the cube texture to rolling textures. This type of earing coupled with the inconsistent cube texture is undesirable during can forming.

The challenge experienced on the rolling mill is controlling texture; hence the aim of this research is to produce flat-rolled aluminium with a 10-13% recrystallization cube texture to reduce the degree of earing in the sheet product. This will be done through plane strain compression (PSC) testing to simulate hot rolling. The desired level of final gauge strength, formability and surface quality, as well as the correct balance of crystallographic textures in the final product, is dependent on the processing parameters experienced during the hot rolling process.