Nickel-based superalloys are extensively used in manufacturing hot gas path components in industrial gas turbines used for power generation. Specifically, GTD-111 DS is one of the widely used alloys used in manufacturing the hot gas path rotating components. These components are subjected to extreme operating environments resulting in creep, oxidation, and fatigue of the components during operation. After continued operation, these damage modes need to be repaired and the components go through extensive repair processes, which include several heat treatments to recover the mechanical properties of the base material (GTD-111 DS) lost during operation. The heat treatments used during repair by the different repair vendors can vary widely in terms of temperature, time and the sequence as well. This study focuses on understanding the differences in the effects of the heat treatments (partial solution, full solution, HIP and full solution) to the base material in terms of microstructure-mechanical property relationships. Results indicate that HIP and full solution resulted in refined microstructures and improved mechanical properties compared to the heat treatments involving partial solution or full solution only. Microstructuremechanical property relationships suggest that components that need to be repaired beyond OEM recommended repair intervals benefit from the HIP and full solution heat treatments.
Skip Nav Destination
ASME Turbo Expo 2018: Turbomachinery Technical Conference and Exposition
June 11–15, 2018
Oslo, Norway
Conference Sponsors:
- International Gas Turbine Institute
ISBN:
978-0-7918-5112-8
PROCEEDINGS PAPER
Mechanical Properties in GTD-111 Alloy in Heavy Frame Gas Turbines
John R. Scheibel,
John R. Scheibel
Electric Power Research Institute, Palo Alto, CA
Search for other works by this author on:
Hans van Esch
Hans van Esch
Turbine End User Services, Houston, TX
Search for other works by this author on:
John R. Scheibel
Electric Power Research Institute, Palo Alto, CA
Rajeev Aluru
Duke Energy, Raleigh, NC
Hans van Esch
Turbine End User Services, Houston, TX
Paper No:
GT2018-75432, V006T24A009; 13 pages
Published Online:
August 30, 2018
Citation
Scheibel, JR, Aluru, R, & van Esch, H. "Mechanical Properties in GTD-111 Alloy in Heavy Frame Gas Turbines." Proceedings of the ASME Turbo Expo 2018: Turbomachinery Technical Conference and Exposition. Volume 6: Ceramics; Controls, Diagnostics, and Instrumentation; Education; Manufacturing Materials and Metallurgy. Oslo, Norway. June 11–15, 2018. V006T24A009. ASME. https://doi.org/10.1115/GT2018-75432
Download citation file:
38
Views
0
Citations
Related Proceedings Papers
CM 939 Weldable ® Alloy
GT2004
Related Articles
Aero Engine Test Experience With CMSX-4® Alloy Single-Crystal Turbine Blades
J. Eng. Gas Turbines Power (April,1996)
Improved Performance Rhenium Containing Single Crystal Alloy Turbine Blades Utilizing PPM Levels of the Highly Reactive Elements Lanthanum and Yttrium
J. Eng. Gas Turbines Power (January,1999)
High-Temperature Performance of Cast CF8C-Plus Austenitic Stainless Steel
J. Eng. Gas Turbines Power (September,2011)
Related Chapters
Introduction
Consensus on Operating Practices for Control of Water and Steam Chemistry in Combined Cycle and Cogeneration
Surface Analysis and Tools
Tribology of Mechanical Systems: A Guide to Present and Future Technologies
Novelty Detection for Predictive Maintenance Scheduling for Industrial Gas Turbines
International Conference on Mechanical Engineering and Technology (ICMET-London 2011)