Fe-bearing phase formation, microstructure evolution, and mechanical properties of Al-Mg-Si-Fe alloy fabricated by the twin-roll casting process

Liu, Xu; Wang, Cheng; Zhang, Shao-You; Song, Jiawang; Zhou, Xiaoli; Zha, Min; Wang, Huiyuan

doi:10.1016/j.jallcom.2021.161202

Cited by 32 publications

(7 citation statements)

References 36 publications

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“…Regardless, the conversion of the needle-like β-AlFeSi phase, which will be discussed ahead, into the Chinese script π-AlFeMgSi with the increase of Mg content in the presence of Fe reduces the deleterious effects of the prior on mechanical properties [25]. The decomposition of the π phase during solution treatment is vital not only to reduce embrittling effects but also to increase the amounts of Si and Mg in solution for later age hardening purposes [26]. Furui et al showed that, although not as effective in increasing isothermal peak hardness, increasing the amount of Mg from 0.5% to 0.8% in an Al-10Si alloy considerably reduces the aging time needed to achieve such hardness [27].…”

Section: Effects Of Alloying Elements 21 Main Elementsmentioning

confidence: 99%

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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Section: Effects Of Alloying Elements 21 Main Elementsmentioning

confidence: 99%

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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“…Please note that even if π-AlFeMgSi is a Fe-rich intermetallic that may cause the embrittlement of the alloy, the conversion of the needle-like β-AlFeSi phase into the Chinese script π-AlFeMgSi reduces the deleterious effects of the former on mechanical properties [30]. This mechanism is known to occur with the increase in Mg content in the presence of Fe [31]. During the present investigations, a π-AlFeMgSi phase growing from β-Al5FeSi can be clearly distinguished, as can be observed in all the micrographs reported in Figure 8.…”

Section: Metallographical Analysismentioning

confidence: 99%

Additive Manufacturing for Rapid Sand Casting: Mechanical and Microstructural Investigation of Aluminum Alloy Automotive Prototypes

Cecchel,

Cornacchia

2024

Metals

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The automotive industry is undergoing a rapid evolution to meet today’s challenges; therefore, continuous innovation and product development are needed. Validation tests on prototypes play a crucial role in moving new components into industrial production. There is also a pressing need for faster prototyping processes. In this context, rapid sand casting (RSC), based on additive manufacturing technology, offers a promising solution for a quick production of sand molds. While this technology is already employed in the industry, the need to deepen the general understanding of its impact on the casting properties is still a relevant item. In this study, different geometries of automotive prototypes made of aluminum EN AC 42100-T6 alloy were experimentally analyzed. Microstructural examinations, tensile tests, and fractography and porosity analyses were conducted. The findings demonstrate the considerable potential of RSC, giving, in general, high mechanical properties. A comparative analysis with prototypes produced through traditional sand casting revealed similar results, with RSC exhibiting superior yield strength and stress at brake. However, both technologies revealed a reduced elongation percentage, as expected. Future efforts will focus on standardizing the RSC process to enhance ductility levels.

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“…These Si elements exist in the form of larger Si particles, which are formed by the ostwald ripening of eutectic Si [22]. Even if the homogenization time is long enough, the Si particles and β-Al 5 FeSi phase are also difficult to dissolve, which adversely affects the mechanical properties of slabs [23,24].…”

Section: Eutectic Phase Decomposition During a Short Time Homogenizationmentioning

confidence: 99%

Improving element uniformity and mechanical properties of Al–Mg–Si alloy fabricated by twin roll casting with superheat melt treatment

Wei

Jiang

et al. 2022

Mater. Res. Express

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The effect of superheat melt treatment(SMT) on microstructure and properties of Al-Mg-Si alloy fabricated by twin roll casting(TRC) was analyzed using optical microscope, scanning electron microscopy, emission electron probe micro analyzer and transmission electron microscopy. SMT increased the subcooling degree of melt during TRC. The solidification microstructure with high dendrite density and small dendrite spacing was obtained. The second phase was evenly distributed between dendrites and the solute concentration gradient was decreased. Intergranular solute aggregation caused by Reynolds’ dilatancy in TRC slab was effectively suppressed. The homogeneous solute distribution of TRC slab with SMT can be realized by short-time homogenization heat treatment. The size of insoluble particles was greatly reduced. The complete decomposition of non-equilibrium eutectic phase increased the solute concentration in α-Al, which promoted the precipitation of precipitates during aging heat treatment. The tensile strength and yield strength of T6 slab were improved, while the uniform elongation are almost not decreased. The strength and uniform of slab in T4P state were both improved. The obtained results can help further shorten the production cycle of TRC slabs and improve mechanical properties.

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Fe-bearing phase formation, microstructure evolution, and mechanical properties of Al-Mg-Si-Fe alloy fabricated by the twin-roll casting process

Cited by 32 publications

References 36 publications

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

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

Additive Manufacturing for Rapid Sand Casting: Mechanical and Microstructural Investigation of Aluminum Alloy Automotive Prototypes

Improving element uniformity and mechanical properties of Al–Mg–Si alloy fabricated by twin roll casting with superheat melt treatment

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