Prediction of electrical/thermal conductivity in as-cast Mg binary alloys

Thermal and electrical conductivity are essential when selecting materials for certain applications. We first present here an analysis of main influencing factors in electrical conductivity of as-cast Mg binary alloys, particularly the effect of the microsegregation of solutes during solidification....

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Bibliographic Details
Published in:Journal of materials research and technology 2023-11, Vol.27, p.5924-5934
Main Authors: Wang, Zhaomeng, Li, Qianchu, Ren, Jie, Chen, Jie, Zhang, Yingbo, Chen, Hui, Liu, Hongmei
Format: Article
Language:English
Subjects:
As-cast Mg binary alloys
Electrical/thermal conductivity
Eutectic
Microsegregation
Solidification
Valence
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Summary:Thermal and electrical conductivity are essential when selecting materials for certain applications. We first present here an analysis of main influencing factors in electrical conductivity of as-cast Mg binary alloys, particularly the effect of the microsegregation of solutes during solidification. A theoretical model is then developed for electrical conductivity in binary Mg alloys, focusing on the effect of solute type and content, and applied to 8 Mg alloy systems with remarkable agreement. Electrical conductivity is then converted into thermal conductivity by Wiedemann–Franz's law, which is also applied to 8 Mg alloy systems, showing significant consistency. This finding provides an easy method for designing and evaluating the electrical/thermal conductivity for Mg alloys, or may be extended to other alloys.
ISSN:2238-7854
DOI:10.1016/j.jmrt.2023.10.243