Abstract
The formation of non-equilibrium phases as a result of segregation during solidification of castings or in the welds of nickel-based superalloys has been a major concern limiting the enhancement of the optimal heat treatment procedure that could have improved the performance of the superalloys to their full potential strength in service. Much consideration has not been given to the dissolution of the non-equilibrium products resulting from welding of nickel-based superalloys. The present work on astroloy shows how non-equilibrium welding products could be completely eliminated by a modified post weld heat treatment procedure.
Published Version
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