Abstract
Creep testing and microstructural analysis were used to assess the properties and time-dependent deformation behavior of precipitation-strengthened nickel-based alloys, specifically, Inconel® alloy 740 and Haynes® 282® alloy, for use as pressure components in boilers operating under advanced steam conditions (750°C, >35 MPa). In support of the need for extended service of steam boiler tubing, piping and vessels, the ability of simple Larson-Miller estimates and a modified power-law model (Wilshire et al.) to predict creep lifetimes on the order of 105 hours based on experimental data out to almost 50,000 h was evaluated for these alloys. Even under conservative conditions, both Inconel alloy 740 and Haynes 282 project to have creep lifetimes exceeding 100,000 hours at 750°C and 100 MPa.
| Original language | English |
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| Title of host publication | ASME 2014 Symposium on Elevated Temperature Application of Materials for Fossil, Nuclear, and Petrochemical Industries, ETAM 2014 |
| Publisher | American Society of Mechanical Engineers |
| ISBN (Electronic) | 9780791840740 |
| DOIs | |
| State | Published - 2017 |
| Event | ASME 2014 Symposium on Elevated Temperature Application of Materials for Fossil, Nuclear, and Petrochemical Industries, ETAM 2014 - Seattle, United States Duration: Mar 25 2014 → Mar 27 2014 |
Publication series
| Name | ASME 2014 Symposium on Elevated Temperature Application of Materials for Fossil, Nuclear, and Petrochemical Industries, ETAM 2014 |
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Conference
| Conference | ASME 2014 Symposium on Elevated Temperature Application of Materials for Fossil, Nuclear, and Petrochemical Industries, ETAM 2014 |
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| Country/Territory | United States |
| City | Seattle |
| Period | 03/25/14 → 03/27/14 |
Funding
ACKNOWLEDGMENTS This research was sponsored by the U.S. Department of Energy (DOE), Office of Fossil Energy, Crosscutting Technologies Program. The authors thank the members of the DOE/Ohio Economic Development Corporation A-USC Consortium Steering Committee for comments on this work, J.L. Moser and T.M. Brummett of Oak Ridge National Laboratory (ORNL) for creep testing and help with the microstructural analysis, respectively, and Y. Yamamoto of ORNL for review of the manuscript.