Investigation of correlations between shear history and microstructure of semi-solid alloys (Conference Paper)

摘要

Rheological properties of semi-solid alloys are closely related to the solid-phase microstructure. Parameters of the microstructure such as particle size distribution are commonly determined by 2D cross section analysis. The determination of mechanisms such as particle agglomeration with decreasing shear rate however, requires information on the 3D spatial distribution. Utilizing synchrotron radiation tomography and SEM on AlCu samples, size distributions and the not yet microscopically observed interrelation of shear rate and particle agglomeration in thixo-material are investigated.