Bubble Growth, Intermetallic Compounds Dissolution And Their Interactions During Heating Of An Al-5wt.%Mn Alloy By In-situ Synchrotron Radiography

Bubble growth, intermetallic compounds (IMCs) dissolution and their interactions during heating of an Al-5 wt.% Mn alloy were investigated by in-situ synchrotron radiography. During heating, the pores evolve gradually from irregular shape to subglobose, and finally transform to spherical bubbles in the melt. The bubble behavior in the melt can be categorized to three types. Bubbles can accelerate the dissolution of the IMCs into the melt, which can be described by a logistic model.