Kinetics of Phase Transformations in the Zn–0.8% Li Alloy

作者：O. B. Kulyasova, V. V. Astanin, R. F. Almukhametov, A. R. Khasanova, Dandan Xia, Yufeng Zheng · 发表于：Russian Journal of Non-Ferrous Metals · 年份：2026 · DOI：10.1134/s1067821225601261 · 研究领域：Magnesium Alloys: Properties and Applications、Shape Memory Alloy Transformations、Microstructure and mechanical properties

Abstract Recent research has shown that zinc alloys are among the most promising materials for bioresorbable (biosoluble) implants. This paper presents the phase transformation of a new promising bioresorbable alloy, Zn–0.8Li. It was found that after quenching from 300°C, the alloy has a structure consisting of a mixture of two isomorphic supersaturated solid solutions: a Li solution in the zinc phase and a Zn solution in the primary crystallites of the LiZn4 phase. During subsequent aging for 20–50 h at room temperature, the alloy undergoes natural aging, during which thin (approximately 1 μm thick) zinc plates precipitate in the LiZn4 phase, and submicron LiZn4 particles precipitate in the zinc phase. The phase transformation pattern during aging was obtained based on the results of X-ray diffraction analysis, SEM microstructural studies, and electrical conductivity studies at different stages of natural aging. The maximum microhardness value is achieved after 48 h of aging.