About this Abstract |
| Meeting |
MS&T25: Materials Science & Technology
|
| Symposium
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Microstructural Control in Materials Processing: Role of Phase Transformation Pathways
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| Presentation Title |
Characterization of microstructural disorder in metallics |
| Author(s) |
Charles Emmett Maher, Katherine Moody, Michael Lastovich, Katherine A Newhall, Bharat Gwalani, Christopher Rock |
| On-Site Speaker (Planned) |
Christopher Rock |
| Abstract Scope |
Disordered hyperuniform systems occur in nature as systems with hidden long-range order and tend to have interesting transport properties, however manufacturing these as engineering materials can be challenging. We chose two systems to test for microstructural hyperuniformity: a high entropy alloy which has a spinodal microstructure composed of ordered FCC and BCC and an immiscible alloy with Co-rich and Cu-rich spherulites. Characterization of these structures using techniques ranging from optical, SEM, EDS and EBSD were performed to study the microstructures. Local variances in the volume fraction of the two-phase systems were calculated with varying window sizes to determine the disorder across length scales and possible hyperuniformity in the materials. This methodology was performed on different aspects of the microstructures such as images, elemental maps and EBSD to evaluate the disorder visually, compositionally and crystallographically to determine if materials can have multiple states of disorder or hyperuniformity, depending on the characteristic. |