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Journal of Materials Engineering and Performance

Erschienen in:

25.10.2019

Influence of the Composition on the Solidification Path, Microstructure Evolution and Mechanical Properties of Al-Cu-Mg Alloys

verfasst von: GuangWei Zhao, Jian Chen, Chong Ding, MingChun Gu, YongSheng Ye

Erschienen in: Journal of Materials Engineering and Performance | Ausgabe 11/2019

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Abstract

The influence of the initial composition on the solidification path, microstructure evolution, thermophysical properties and mechanical properties of Al-Cu-Mg alloys was investigated. The solidification paths of the investigated alloys were determined by analyzing the solidification structure, and then the experimentally determined paths were compared with those from the calculated results. Three of the investigated alloys experienced typical ternary eutectic solidification, and the other four alloys experienced quasiperitectic reactions. Due to differences in the initial compositions, different eutectic morphologies were formed during the solidification process. The binary eutectic phases, (α-Al + Al₂Cu) and (α-Al + Al₆CuMg₄), and the (α-Al + Al₆CuMg₄ + Al₈Mg₅) ternary eutectic phase tended to exhibit divorced growth, and the (α-Al + Al₂CuMg), (α-Al + Al₆CuMg₄) and (α-Al + Al₂Cu + Al₂CuMg) eutectic phases tended to exhibit coupled growth. The results indicated that the initial composition, solidification path, microstructure and morphology could greatly affect the melting enthalpy, microhardness and compressive strength of the investigated Al-Cu-Mg alloys.

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Titel: Influence of the Composition on the Solidification Path, Microstructure Evolution and Mechanical Properties of Al-Cu-Mg Alloys
verfasst von: GuangWei Zhao
Jian Chen
Chong Ding
MingChun Gu
YongSheng Ye
Publikationsdatum: 25.10.2019
Verlag: Springer US
Erschienen in: Journal of Materials Engineering and Performance / Ausgabe 11/2019
Print ISSN: 1059-9495
Elektronische ISSN: 1544-1024
DOI: https://doi.org/10.1007/s11665-019-04409-0

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