Identification of the role of Al-Fe-Mn-Si large casting dispersoids in age-hardenable aluminum alloys using small angle X-ray scattering

Aluminum flat-stock incorporates large dispersoids to facilitate grain-size refinement upon casting and to prevent galling in downstream operation. Industrial-practice has reduced the deleterious effects of stringers and the focus for cost-effective Al-Mg-Si alloys has been the characterization of nano-precipitates to attain optimum strength conditions. Such studies record the presence of large intermetallic particles but their role during …