Advance Welding

Welding

Advance Welding

Abstract

Weld nugget / stir zone micro structures often exhibit highly homogeneous distributions of non-deforming constituent phases as well as refinement of such phases and grain structures. The role of re crystallization in grain refinement during FSW/P is well understood. However, the processes involved in refinement of particle size and homogenization of particle distributions during FSW/P are less well understood. FS of an as-cast AA356 alloy has been conducted over a wide range of RPM values using both threaded and smooth tools.