High temperature laser welding

摘要

A method of welding superalloy components comprising: pre-heat one or more components to be welded to a temperature of at least 816° C in a substantially enclosed inert gas atmosphere; supplying multiple fillers (20,24 or 26) to the weld zone, at least two of said fillers having different compositions; and welding the one or more preheated components utilizing a laser beam, while maintaining said pre-heat temperature.