About this Abstract |
Meeting |
2023 TMS Annual Meeting & Exhibition
|
Symposium
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High Temperature Creep Properties of Advanced Structural Materials
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Presentation Title |
Creep Behaviors of High-entropy Alloys |
Author(s) |
Lia Amalia, Di Xie, Shuying Chen, Weidong Li, Dongyue Li, Yong Zhang, Chelsey Hargather, Yanfei Gao, Peter Liaw |
On-Site Speaker (Planned) |
Peter Liaw |
Abstract Scope |
To ensure reliability and safety, creep resistance is an important property for high-temperature applications. Although the room-temperature behavior of high-entropy alloys has been studied extensively, the creep behavior has only been cursorily studied. Using data from the studies that have been performed, we are able to paint a picture of the creep behavior of high-entropy alloys. Creep can be characterized by conducting tests to reveal its uniaxial tension or compression behavior, stress-relaxation behavior, strain-rate-jump behavior, and nanoindentation creep behavior. From these tests, key deformation quantities could be obtained, such as the stress exponent (n), activation volume (V), and activation energy (Q). Furthermore, several non-neglectable factors affect the creep behavior of HEAs, including high entropy, lattice distortion, sluggish diffusion, stacking fault energy, alloying elements, and grain size, many of which are readily studied with computational techniques. The creep behavior of medium- and high-entropy alloys will be compared to commercial alloys. |
Proceedings Inclusion? |
Planned: |
Keywords |
High-Entropy Alloys, High-Temperature Materials, Mechanical Properties |