Effect of Sb Modification and B Refinement on the Microstructure and Properties of as-Cast Al–7Si–0.35Mg Alloy

Cai, Qizhou; Liu, Bo; Chen, Xu; Xi, Weiguo; Cheng, Jingfan

doi:10.1007/s40962-022-00830-9

Cited by 4 publications

(2 citation statements)

References 34 publications

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“…The beneficial effect of Sb is also reported in 319 alloys [52,56]. Its optimum amount might vary considerably depending on alloy composition and casting conditions, ranging from 0.009wt% [56] to 0.6wt% [53]. Likewise, bismuth (Bi) exerts the same effect on eutectic morphology and does not increase porosity.…”

Section: Modifiers Of the Eutectic Morphologymentioning

confidence: 96%

“…Antimony has a slightly different action, producing a lamellar morphology instead of fibrous [3,52]. Cai et al attributed its modification effect to the precipitation AlSb compounds during solidification, which were absorbed in the growth front of the eutectic Si, inhibiting growth and thus refining Si particles [53]. It does not increase porosity like strontium.…”

Section: Modifiers Of the Eutectic Morphologymentioning

confidence: 99%

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The Influence of Alloying Elements on the Microstructure and Properties of Al-Si-Based Casting Alloys: A Review

Callegari

Lima

Coelho

2023

Metals

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The excellent casting behavior and mechanical and corrosion properties of aluminum-silicon (Al-Si)-based alloys make them ideal for the manufacture of lightweight components with complex geometries. However, these properties depend directly on their microstructure, which, in its turn, is strongly affected by the composition of the alloy, among other factors. Several elements can be added to the material aiming to promote microstructural changes, e.g., grain refinement, optimization of phase morphology and distribution, and precipitation strengthening. Efforts are continuously put into such enhancements of cast Al alloys since they lead to quality improvements that allow for weight reduction and safety increase. Considering the technological relevance of the subject, this paper provides an overview of the research focused on the addition of alloying elements to these alloys, with a greater focus on Al-Si-based systems and the comprehension of the effects of these additions on their microstructure and properties.

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