Transcription of MATERIALS ISSUES FOR TURBINES FOR …
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MATERIALS ISSUES FOR TURBINES FOR …
MATERIALS ISSUES FOR TURBINES FOR OPERATION IN ULTRA-SUPERCRITICAL Wrighta, Maziasza, Ellisb, Gibbonsc, and WoodforddABSTRACTCoal-fired supercritical-steam power plants are currently operating with steam temperatures at the inlet tothe high-pressure turbine close to or slightly above 600 C. The use of recently-developed martensitic-ferritic steels is expected to allow this temperature to be raised to 620 C, which probably represents theinherent limit of capability of these advanced steels. Further increases in temperature capability willrequire the use of Ni-base alloys, and efforts in this direction have been pioneered in Europe where thereare plans to build a plant operating on steam at 700 C.
temperature of 582°C, at 300 bar, with a single heat reheat to 600°C5.The turbine used in this case was supplied by Ansaldo Energia. The materials development to support these advances has come from major
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