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A panorama insight into the effect of pressure and Mn/Fe ratio on the Fe-contained intermetallic compounds in squeeze cast microstructure of aluminum alloys
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DOI：10.1016/j.scriptamat.2026.117386.png)
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Abstract
En 中文
A critical knowledge gap persists regarding how pressure governs the Fe-contained intermetallic compounds (IMCs) in squeeze casting. By combining calculation of phase diagrams, cooling curve analysis, and microstructure characterization, this study systematically revealed the effects of pressure and Mn/Fe ratio on the type, morphology, and size of Fe-contained IMCs in squeeze cast Al-Si-Mg alloys. The new findings include: A panorama insight into the formation of Fe-contained IMCs under various pressure and Mn/Fe ratio was presented; An initial increase in pressure (0-80 MPa) retards the growth of α-AlFeMnSi and promotes the formation of β-AlFeSi and π-AlFeMgSi (particularly in alloys with low Mn/Fe ratios), but with further increase to 120 MPa, α‑AlFeMnSi becomes the thermodynamically preferred IMCs; In Al-Si-Mg alloys with a Mn/Fe ratio of 1.33 and under an applied pressure of 120 MPa, the majority of IMCs were fine, short rod-like α-AlFeMnSi particles, effectively mitigating the detrimental effects of Fe.
Keywords:
Fe-contained intermetallic compounds
squeeze casting
pressure effect
Mn/Fe ratio
microstructure characterization
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5.6
Papers:
1.6W
Citations:
5.1W
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