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Abstract：
In this study, the microstructural evolution of Al-Mg-Zn-Er-Zr alloys during the homogenization process is investigated. The primary phase dissolution and solute diffusion were studied based on microstructural char-acterization and kinetic analysis. The results showed that the primary phase completely dissolved and the solute elements are uniformly diffuse for homogenization at 460 degrees C/24 h. The Al3 (Er, Zr) second phase precipitates during the homogenization of Al-Mg-Zn-Er-Zr alloys. Compared with the traditional single-stage homogeni-zation, the two-stage homogenization promotes the uniform precipitation of the Al3(Er, Zr) phase, which im-proves the chain distribution of the Al3(Er, Zr) phase and increases hardness of the alloy. The optimal homogenization treatment is 320 degrees C/10 h + 460 degrees C/24 h, which is consistent with the results of the homoge-nization kinetic analysis.
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INTERMETALLICS
ISSN： 0966-9795
Year： 2023
Volume： 158
4 . 4 0 0
JCR@2022
ESI Discipline： MATERIALS SCIENCE;
ESI HC Threshold：26
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SCOPUS Cited Count：
ESI Highly Cited Papers on the List： 0 Unfold All
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30 Days PV： 1
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