|About this Abstract
||2017 TMS Annual Meeting & Exhibition
||Energy Materials 2017: Materials for Coal-Based Power
||Continued Development of a Cast Superalloy, IN740 for Advanced Power Generation Applications
||Kyle Rozman, Jeff Hawk, Paul Jablonski
|On-Site Speaker (Planned)
The National Energy Technology Laboratory is developing advanced structural materials to be used in high temperature power generation applications. Wrought Inconel 740 has been code approved for use in boiler applications and subsequently was investigated for use as a casting. Homogenization and aging heat treatments were given to castings which modeled thick section components. Variations of chemistry aims were made to modify the secondary phases that formed during aging and thus improve ductility. For this presentation the tensile and creep results of the cast alloy was investigated. Excellent ductility in excess of 20% at 800oC was found in one heat. However, the creep ductility is rather poor, less than 5% for all heats, regardless of the applied stress or heat chemistry.
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