About this Abstract |
Meeting |
2022 TMS Annual Meeting & Exhibition
|
Symposium
|
Failure, and a Career That is Anything But: An LMD Symposium Honoring J. Wayne Jones
|
Presentation Title |
Strain Localization and Very High Cycle Fatigue |
Author(s) |
Jean-Charles Stinville, Alice Cervellon, Tresa M. Pollock |
On-Site Speaker (Planned) |
Tresa M. Pollock |
Abstract Scope |
Very high cycle fatigue testing at 20 kHz in an effective approach understanding mechanisms of failure in turbine airfoil materials as well as for rapid characterization of the fatigue properties of a wide spectrum of structural materials. The elevated temperature VHCF behavior of single crystal superalloys as a function of temperature and mean stress will be discussed. Strain localization and slip irreversibility in fatigue has been studied over a broad set of structural materials using high resolution digital image correlation. The relationships between the yield and ultimate tensile strength, VHCF fatigue strength and the amplitude and spacing of slip localization events are revealed for the first time. Interestingly, the fatigue strength of a large collection of fcc, hcp and bcc metallic alloys in the VHCF regime can be predicted by the amplitude of slip localization during the first cycle of loading. |
Proceedings Inclusion? |
Planned: |
Keywords |
Mechanical Properties, Characterization, High-Temperature Materials |