Effects of Mn Concentration on Grain Boundary Pinning of 5083 Aluminum Alloy

Superplastic deformation has a significant industrial application value due to the large elongation, which allows manufacturing parts with complex geometries but happens at elevated temperatures and low strain rates. Therefore, it requires alloys fine grain size whose grains tend grow processing temperatures. Second-phase particles can promote boundary pinning keep structure during superplastic forming. In 5083 aluminum alloy, Al6Mn make pinning. There are two types of alloy: conventional manganese range from 0.4 1.0 wt.% between 0.64 0.86. It was observed in bibliographic research that higher chemical concentration than one. However, no references were found covering stability. This work shows evolution constant temperature different concentrations. indicates substantially impacts when composition is 0 0.6 wt.%. No effects for Mn concentrations 0.6%".