Abstract
The harsh operating conditions of Advanced Ultra-Supercritical (A-USC) power plants, i.e., steam operation conditions up to 760°C (1400°F)/35 MPa (5000 psi), require the use of Ni-based alloys with high temperature performance. Currently, the U.S. Department of Energy Fossil Energy program together with Electric Power Research Institute (EPRI) and Energy Industries of Ohio (EIO) is pursuing a Component Test (ComTest) project to address material- and manufacturing-related issues for A-USC applications. Oak Ridge National Laboratory (ORNL) is supporting this project in the areas of mechanical and microstructure characterization, weld evaluation, environmental effect studies, etc. In this work, we present results from these activities on two promising Ni-based alloys and their weldments for A-USC applications, i.e., Haynes® 282® and Inconel® 740H®. Detailed results include microhardness, tensile, air and environmental creep, low cycle fatigue, creep-fatigue, environmental high cycle fatigue, and supporting microstructural characterization.
| Original language | English |
|---|---|
| Title of host publication | Joint EPRI-123HiMAT International Conference on Advances in High-Temperature Materials - Proceedings from EPRI's 9th International Conference on Advances in Materials Technology for Fossil Power Plants and the 2nd International 123HiMAT Conference on High-Temperature Materials |
| Editors | John Shingledecker, Masao Takeyama |
| Publisher | ASM International |
| Pages | 580-591 |
| Number of pages | 12 |
| ISBN (Electronic) | 9781627082716 |
| DOIs | |
| State | Published - 2019 |
| Event | Joint 9th International Conference on Advances in Materials Technology for Fossil Power Plants, EPRI 2019 and the 2nd International 123HiMAT Conference on High-Temperature Materials - Nagasaki, Japan Duration: Oct 21 2019 → Oct 24 2019 |
Publication series
| Name | Joint EPRI-123HiMAT International Conference on Advances in High-Temperature Materials - Proceedings from EPRI's 9th International Conference on Advances in Materials Technology for Fossil Power Plants and the 2nd International 123HiMAT Conference on High-Temperature Materials |
|---|
Conference
| Conference | Joint 9th International Conference on Advances in Materials Technology for Fossil Power Plants, EPRI 2019 and the 2nd International 123HiMAT Conference on High-Temperature Materials |
|---|---|
| Country/Territory | Japan |
| City | Nagasaki |
| Period | 10/21/19 → 10/24/19 |
Funding
This project is sponsored by the U.S. DOE, Office of Fossil Energy, Crosscutting Research, under contract DE-AC05-00OR22725 with ORNL managed by UT Battelle, LLC. We are grateful to R.D. Golihue of Special Metals Corporation (SMC) for the welding of the Inconel 740H/Thermanit 263 plate and providing the associated cross-weld creep specimens and the initial characterization results for the as-welded material and to J.J. DeBarbadillo and B.A. Baker of SMC for their consultation. We would like to thank S. Hawkins, J. Moser, D. McClurg, A. Frederick, E. Manneschmidt, D. Kyle, T. Geer, T. Lowe, J. Spurling, and D. Stringfield from ORNL for their technical assistance. We also appreciate L. Tan and Y. Yamamoto from ORNL for their technical review of this manuscript.