About this Abstract |
Meeting |
2021 TMS Annual Meeting & Exhibition
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Symposium
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TMS-DGM Symposium: A Joint US-European Symposium on Linking Basic Science to Advances in Manufacturing of Lightweight Metals
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Presentation Title |
High-throughput Evaluation of Hardening Potency and Solubility of Eight Alloying Elements in Magnesium |
Author(s) |
Chuangye Wang, Wei Zhong, Ji-Cheng Zhao |
On-Site Speaker (Planned) |
Chuangye Wang |
Abstract Scope |
Liquid-solid diffusion couples (LSDCs) were able to generate the complete single-phase hcp solid solution compositions up to the solubility limit. Nanoindentation scans across the composition gradient in LSDCs allowed effective evaluation of composition-dependent hardness of eight alloying elements (Al, Ca, Ce, Gd, Li, Sn, Y, Zn) in the hcp Mg phase. The solute hardening coefficients were evaluated from the measured composition-hardness data and correlated with various properties such as atomic radius of the solutes. The hardening coefficients which are an indicator of the potency of solid-solution strengthening were found to be best correlated with the computed strengthening rates of the solutes. The composition profiles obtained from the LSDCs also allowed reliable evaluation of the solubility limits of these elements in the hcp Mg phase at various temperatures to provide valuable data for phase diagram and thermodynamic assessments. The solubility data are the first measurements for some of these elements. |
Proceedings Inclusion? |
Planned: |