Effective Exploration of New 760 Degrees Celsius-Capability Steels for Coal Energy

 

Montage image of an Iron-Chromium-Molybdenum<br/>(Fe-Cr-Mo) triple region of a diffusion multiple that<br/>was dual-annealed at 1200 °C for 500 hours followed<br/>by 900 °C for 500 hours, showing several different<br/>precipitate phases with diverse sizes and morphologies.
Montage image of an Iron-Chromium-Molybdenum
(Fe-Cr-Mo) triple region of a diffusion multiple that
was dual-annealed at 1200 °C for 500 hours followed
by 900 °C for 500 hours, showing several different
precipitate phases with diverse sizes and morphologies.
Performer: 
Ohio State University Research Foundation
Website:  Ohio State University Research Foundation
Award Number:  FE0008960
Project Duration:  09/01/2012 – 08/31/2015
Total Award Value:  $299,934.00
DOE Share:  $299,934.00
Performer Share:  $0.00
Technology Area:  University Training and Research
Key Technology:  High Performance Materials
Location:  Columbus, Ohio

Project Description

The study will research new steels capable of operating at 760 degrees Celsius in the aggressive environments of advanced ultra-supercritical (AUSC) boilers and steam turbines. New compositions and new strengthening mechanisms or microstructures will be identified, using high-throughput diffusion multiples—an assembly of different metals which are subjected to high temperature, creating intermetallic compounds—and computational thermodynamics. Steel compositions with high iron and chromium concentrations will be the focus of this exploration because high iron concentration—instead of expensive nickel-based super alloys—is important for cost reduction and high chromium concentration is essential for oxidation and hot-corrosion resistance.

Project Benefits

The project will develop new steels capable of operating at AUSC conditions. Improving the temperature capability of new steels in AUSC boilers and steam turbines will significantly reduce the cost of operating advanced coal-based power generation systems. Overall, improvement to high-temperature advanced materials will promote the development of advanced power plant designs that can operate at higher temperatures and pressures, leading to improvements in efficiency and operational flexibility, and resulting in lower capital and operating costs.

Contact Information

Federal Project Manager 
Charles Miller: charles.miller@netl.doe.gov
Technology Manager 
Susan Maley: susan.maley@netl.doe.gov
Principal Investigator 
Ji-Cheng Zhao: zhao.199@osu.edu
 

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