Application Of Small Punch Creep Test For Inconel 617 Alloy Weldment

In this work, SP creep tests were applied to the Inconel 617 alloy and its weldment, which is one of the candidate materials for future advanced fossil power plant. To find the creep characteristics of the weakest local part in Inconel 617 alloy weldment, test specimens of thin squares (10 10 0.5mm) were machined at three different locations: weld metal, base metal, and HAZ near base metal. The test results of different microstructures were compared to one another. To investigate the effect of microstructure on the creep behavior of Inconel 617 alloy weldment, the rupture parts were also observed by a scanning electron microscope. (C) 2011 Published by Elsevier Ltd. Selection and peer-review under responsibility of ICM11