Microstructural features and thermal response of granulated Al and A356 alloy with relevant Sn additions

Bassani, Paola; Molteni, Matteo; Gariboldi, Elisabetta

doi:10.1016/j.matdes.2023.111879

Cited by 8 publications

(2 citation statements)

References 58 publications

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“…Figure 7 shows the impact of adding alloying elements, with alloy 1 and alloy 2 indicating a gradual shift towards an almost brittle fracture surface. Sn and Cu alloys have the potential to combine to generate intermetallic compounds like Al-Sn [30], Cu3Sn [31], and θ-Al2Cu [32,33]. The initiation and spread of cracks might result from the production of these intermetallic phases, lowering the alloy's overall strength.…”

Section: Tensile Test Resultsmentioning

confidence: 99%

Modeling Microstructural and Mechanical Properties of Solidified Al-Sn-Cu System

Mahin Muntasir,

Razia Khan Sharme,

Mohammad Borhan Uddin

et al. 2023

MJCSM

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In this study,three samples were created using gravity die casting, i.e.,two modelsof immiscible alloys, Alloy1 (Al-12wt.%Sn-8wt.%Cu) and Alloy2 (Al-20wt.%Sn-10wt.%Cu),along with a control sample of pure Al.These gravity die-cast samples,homogenized at 700°Cfor 2hours,are analyzed formechanical properties and microstructures.Optical microscopy and scanning electron microscopy with energy dispersive spectroscopy (EDS) were used to analyze the changes in the Al-Sn-Cu solidified system resulting from the addition of specific alloying elements. Both Alloy1 and Alloy2 showed better mechanical properties than the control sample of pure Al. The tensile strength of Alloy2 shows a decrease from 110.878 MPato 105.750 MPacompared to Alloy1. However, there isan increase in the yield strength from 30.239 MPa to 32.362 MPa when the addition of tin exceeds 12% and copper exceeds 8%, respectively, which might be because of the alpha-phase solid solution’s interdendritic region that produces lattice strains.The impact resistance and ductility of the alloy are compromised as the hardness increases with the addition of more alloying elements. Alloy2 exhibited the highest hardness at 50.92 HB. The Brinell hardness values suggest these alloys arepotential candidatesto replace antifriction bronzes. However, hard CuAl2 is produced at the grain boundaries when copper percentages are increased, reducingthe impact properties. The effects of different alloying constituents and melt treatment on the microstructural control of Al-Sn-Cu solidified alloy werealso studied. The aluminum matrix with a semi-continuous network (reticular) distribution of tin on the grain boundary was observed. The grain size gradually decreased from 19.65 μm to 16.94 μm and became more equiaxed for Al-20wt.%Sn-10wt.%Cu than Al-12wt.%Sn-8wt.%Cu. The bond between tin and matrix improved with the increasing alloying element. The data obtained from this experiment will undoubtedly contribute to future research in this field

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Section: Tensile Test Resultsmentioning

confidence: 99%

Modeling Microstructural and Mechanical Properties of Solidified Al-Sn-Cu System

Mahin Muntasir,

Razia Khan Sharme,

Mohammad Borhan Uddin

et al. 2023

MJCSM

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“…Aluminum-tin alloys have good resistance to adhesion wear due to the ability of Sn to form a thin inert film on the friction surface [1][2][3][4]. The pressure of intensive adhesion of such alloys with hard counterbodies increases with a rise in the content of Sn up to 50 wt% (~25 vol%) [5][6][7].…”

Section: Introductionmentioning

confidence: 99%

Effect of the Reinforcing Particle Introduction Method on the Tribomechanical Properties of Sintered Al-Sn-Fe Alloys

Rusin,

Skorentsev,

Dmitriev

2023

Metals

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The present paper reports the results of the comparative study of mechanical properties of sintered disperse-strengthened Al–40Sn alloy depending on the method of reinforcing particle introduction. The study is performed on two mixtures of aluminum and tin powders: one is admixed with 5.5–14.6 wt% of pure iron powder and the other contains the same amount of iron, but as a component of aluminide Al3Fe powders. The volume fraction of tin remains unchanged in all mixtures, being equal to 20%, and the concentration of hard particles increases due to a decrease in the volume fraction of the aluminum phase. Green compacts are sintered in the vacuum furnace at a temperature above the melting point of aluminum. The sintered material is a composite containing three phases: α-Al, β-Sn, and Al3Fe, in which the tin volume fraction is constant. Testing of the sintered composites for compression shows that the addition of finished Al3Fe particles has a more beneficial effect on their mechanical properties as compared to the addition of pure iron powders. In the latter case, aluminides are formed during sintering. The ultimate strength of composites reaches 180 MPa. Mechanisms of sintering of composites and the related structure and mechanical properties are discussed.

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Role of microstructure in the exploitation of self-healing potential in form-stable composite phase change materials based on immiscible alloys

Molteni,

Grande,

Bassani

et al. 2024

Journal of Alloys and Compounds

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Microstructural features and thermal response of granulated Al and A356 alloy with relevant Sn additions

Cited by 8 publications

References 58 publications

Modeling Microstructural and Mechanical Properties of Solidified Al-Sn-Cu System

Modeling Microstructural and Mechanical Properties of Solidified Al-Sn-Cu System

Effect of the Reinforcing Particle Introduction Method on the Tribomechanical Properties of Sintered Al-Sn-Fe Alloys

Role of microstructure in the exploitation of self-healing potential in form-stable composite phase change materials based on immiscible alloys

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