About this Abstract |
Meeting |
MS&T22: Materials Science & Technology
|
Symposium
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High Entropy Materials: Concentrated Solid Solutions, Intermetallics, Ceramics, Functional Materials and Beyond III
|
Presentation Title |
Atomic Mobility Assessment of the fcc Ternary Co–Cr–Mn Alloy |
Author(s) |
Sri Pragna Pendem, Nobufumi Ueshima, Katsunari Oikawa |
On-Site Speaker (Planned) |
Sri Pragna Pendem |
Abstract Scope |
The atomic mobility parameters of the fcc ternary Co–Cr–Mn system, which is a sub-alloy of the Cantor alloy, were determined in this study. Composition profiles measured using EPMA (electron probe microanalyzer) after heat-treating the diffusion couples at 900, 1050, and 1150 °C were used to obtain flux by using Whittle-Green method. Values of flux obtained experimentally were used to determine the atomic mobility parameters using an in-house python program and Nelder-Mead optimization technique. Atomic mobility parameters obtained in this study were validated by comparing the experimental and simulated concentration profiles at three temperatures. The kinetic assessments in this study will facilitate the development of kinetic databases for HEAs. |