What question did this study set out to answer?

The aim is to predict the hardness of Zn–Al alloy after tempering using Gibbs energy principles.

January 25, 2026MRS Communications0 citationsOpen Access

Hardness assessment of Zn–Al alloy by means of Gibbs energies post tempering

JCJose David Villegas CárdenasUniversidad Nacional Autónoma de México VHVíctor Manuel López HirataInstituto Politécnico Nacional MMMaribel Leticia Saucedo MuñozInstituto Politécnico Nacional

Key Points

The aim is to predict the hardness of Zn–Al alloy after tempering using Gibbs energy principles.
Introduced a methodology correlating mole fraction and Gibbs energy slope with hardness.
Established a linear relationship between the hardness and Gibbs energy variables.
Evaluated prediction accuracy with an average error of 7%.
Found a previously undocumented association between mole fraction and hardness.
Achieved prediction errors ranging from 0% to 9%.
Demonstrated reduced reliance on costly experimental methods for hardness assessment.

Abstract

Abstract This study introduces a novel methodology for predicting the hardness of Zn–Al alloy post-tempering, utilizing their mole fraction and Gibbs energy slope. A linear correlation between these variables and hardness is established -an association not previously documented in the literature. The proposed model achieves an average error of 7%, with errors ranging from nearly 0 up to 9%, the study demonstrates the accessibility to predict the hardness of a binary alloy, this predictive capability significantly reduces reliance on experimental trial-and-error methods, lowering costs and improving material development. Graphical abstract

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