Materials for Ultra-Supercritical Steam Power Plants


Alloy 617 in Cold Bend Test Rig
Alloy 617 in Cold Bend Test Rig
Oak Ridge National Laboratory (ORNL)
Website:  ORNL - Oak Ridge National Laboratory
Award Number:  FWP-FEAA061
Project Duration:  10/01/2009 – 12/30/2016
Total Award Value:  $4,138,000
DOE Share:  $4,138,000
Performer Share:  $0
Technology Area:  Plant Optimization Technologies
Key Technology:  High Performance Materials
Location:  Oak Ridge, Tennessee

Project Description

This research is integrated into the U.S. Department of Energy/Ohio Coal Development Office sponsored Ultrasupercritical (USC) Steam Boiler Consortium which seeks to develop the materials technology required to operate a power stearn boiler at steam conditions up to 760 degrees Celsius and 350 bar (5000 psig), which will decrease emissions by up to 30% and reach efficiencies of ~50%. Specifically, Oak Ridge National Laboratory (ORNL) will continue its leadership of the Mechanical Properties task and its participation on the steam-side oxidation task. A new program to extend the work initiated in the original five year program has been started by the USC Consortium (Electric Power Research lnstitute, ErO, the four major U.S. boiler manufactures, and ORNL). For the Mechanical Properties task (ORNL-A), ORNL will continue its critical work to evaluate the long-term behavior of the down-selected candidate alloys, investigate the effects of processing variables and welding, provide fundamental research needed in the areas of microstructural evolution at relatively long-times using electron microscopy and computational thermodynamics, and provide the necessary data to produce material models. The Steam-Side Oxidation task (ORNL-B) will focus on measuring oxidation kinetics pertinent to the range of conditions expected in USC steam boiler operation, and characterizing the evolution of scale morphologies to provide input on ultimate failure due to high oxidation rates or scale spallation. The data collected will be a major contribution to the database on environmental compatibility being assembled in this project.

Project Benefits

This project will develop the materials technology required to operate an ultra-supercritical steam boiler. This project will provide a basis for the specification, design, fabrication, operation, and maintenance of advanced USC steam power plants that will lead to improved plant efficiency and reduced CO2 emissions, fossil fuel conservation, and operational flexibility, resulting in lower capital and operating costs.

Contact Information

Federal Project Manager 
Vito Cedro:
Technology Manager 
Briggs White:
Principal Investigator 
Bruce Pint:

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