Characterization of Long-Term Service Coal Combustion Power Plant Extreme Environment Materials (EEMs) Email Page
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Performer:  Electric Power Research Institute, Inc. Location:  Charlotte, North Carolina
Project Duration:  01/25/2018 – 01/24/2021 Award Number:  FE0031562
Technology Area:  Advanced Combustion Systems Total Award Value:  $2,500,000
Key Technology:  Enabling Technologies/Innovative Concepts DOE Share:  $2,000,000
Performer Share:  $500,000

(a) Scanning electron microscope image<br/>(b) corresponding electron backscatter diffraction<br/>phase map showing creep damage associated with sigma phase in 374H.
(a) Scanning electron microscope image
(b) corresponding electron backscatter diffraction
phase map showing creep damage associated with sigma phase in 374H.

Project Description

The objective of this project is to provide a comprehensive database of mechanical properties, damage assessment/accumulation, and microstructural information from extreme environment material (EEM) components subjected to long-term service with the intent to develop, calibrate, refine, and/or validate the life assessment tools used for predicting remaining life under complex operating conditions. Working with U.S. and global utilities, sufficient quantities of EEM components from operating and decommissioned coal-fired power plants will be obtained, including creep strength enhanced ferritic steels, 300-series H grade stainless steels, advanced austenitic stainless steels, and dissimilar metal welds between these types of materials. The materials obtained will have been exposed to long-term service (greater than 100,000 hours) and will include all relevant background information for material type, fabrication data, and operational conditions. The acquired materials will be subjected to detailed damage analysis, in-depth microstructural characterization, and, where relevant, rigorous low- and/or high-temperature mechanical testing in an effort to establish a link between microstructural/damage evolution and long-term behavior as established by in-service performance, destructive evaluation, or predicted behavior through time-temperature-parameter relationships or continuum damage mechanics.

Project Benefits

The results obtained from this project will provide a comprehensive compendium of materials data and time-temperature-parameter relationships for EEM components exposed to long-term service in coal-fired power plants. Detailed characterization of component chemistry, mechanical properties, microstructural features, and oxide scale thickness measurements will provide essential data and information required to develop and/or validate existing life assessment tools used for predicting component remaining life. Considering the age of existing coal-fired power plants, such data is vital for ensuring their long-term safety and reliability, especially if they are expected to operate under complex cyclic loading conditions.

Presentations, Papers, and Publications

Contact Information

Federal Project Manager Vito Cedro:
Technology Manager Briggs White:
Principal Investigator Michael Gagliano: