About this Abstract |
Meeting |
2021 TMS Annual Meeting & Exhibition
|
Symposium
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Materials for High Temperature Applications: Next Generation Superalloys and Beyond
|
Presentation Title |
Understanding the High-temperature Fatigue Properties of the Novel Fe-Ni-Cr Based Superalloy |
Author(s) |
Shivakant Shukla, Govindarajan Muralidharan, Lawrence Allard , Jonathan Poplawsky |
On-Site Speaker (Planned) |
Shivakant Shukla |
Abstract Scope |
Increment in the operating temperature of the internal combustion engine has the capacity to increase the fuel efficiency. Hence, there is an ever-growing demand for materials that can be operational at projected temperatures and be economically sustainable. Subsequently, the current study investigates high-temperature fatigue properties of novel Fe-Ni-Cr based superalloy. The wrought alloy was subjected to high cyclic fatigue testing at 800 and 900 °C and the microstructure before and after the fatigue testing was analyzed via SEM, TEM and APT. Increase in γ’ size after high-temperature fatigue testing was observed. Potential crack initiation sites were also evaluated via fractography and EDS analysis. *Research sponsored by the U.S.DOE, Assistant Secretary for Energy Efficiency and Renewable Energy, Office of Vehicle Technologies, Propulsion Materials Program under contract DE-AC05-00OR22725 with UT-Battelle, LLC. APT conducted at the ORNL’s Center for Nanophase Materials Sciences (CNMS), a U. S. DOE Office of Science User Facility. |
Proceedings Inclusion? |
Planned: |
Keywords |
High-Temperature Materials, Mechanical Properties, Other |