Even though, FSW process was effective in fabricating joints of alloys of Mg, Al, steel and several metal matrix composites, investigations being carried out on Cu and its alloys is minimal and only insufficient experimental findings are available with respect to mechanical properties and characteristics of micro-structures arising during the welding of alloys of Cu by applying FSW process, which demands us an inevitable need for such objective oriented experimental investigations. This book focuses to provide a better understanding about the suitable conditions (parameters) to be adopted...