About this Abstract |
Meeting |
2024 TMS Annual Meeting & Exhibition
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Symposium
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Advances in the State-of-the-Art of High Temperature Alloys
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Presentation Title |
Quantification and Characterization of Solute Segregation in Binary Ni-Co for Alloy Design |
Author(s) |
Victoria Tucker, Michael Titus |
On-Site Speaker (Planned) |
Victoria Tucker |
Abstract Scope |
Solute segregation to planar defects in alloys (HEAs and superalloys) has been shown to drastically change mechanical properties. Small atomic percent composition differences in alloys can favor different segregation behavior which results in either a solute strengthening or weakening effect, depending on the stability of the locally segregated phase. To understand the fundamentals of this phenomenon, a phenomenological approach is required. This work outlines hi-level characterization of the most basic local phase transforming (LPT) and strengthening alloy: Ni-Co. Characterization techniques include high resolution scanning transmission electron microscopy (HR-STEM) & energy dispersive spectroscopy (EDS), differential scanning calorimetry (DSC), dynamic mechanical analysis (DMA), and high temperature elastic modulus testing. Additionally, a new method for determining the presence, onset temperature, and strengthening or weakening effect of LPT is discussed using Ni-Co alloys as the basis for understanding the method. Using this method, well-studied LPT alloys are also tested, and results discussed. |
Proceedings Inclusion? |
Planned: |
Keywords |
Characterization, Phase Transformations, |