Solidification of Aluminum Alloy Weld Metal

The characteristics of the structure of solidified weld metal vary with its solidification process, which affects the occurrence of defects such as blowholes and solidification cracking. With respect to the solidification process during casting, a great deal of research has been carried out to control the process so that the solidification structure and its characteristics can be adjusted preferentially. This article describes the analytical results for the same two concerning the cooling behavior of the solid-liquid zone during the solidification process, the change in fraction of solid and local solidification rate.