The influence of Ni and Zr additions on the hot compression properties of Al-SiCp composites

Lattanzi, Lucia; Etienne, Andrea; Li, Ziyu; Manjunath, Tushar; Nixon, Nirmal; Jarfors, Anders E. W.; Awe, Samuel Ayowole

doi:10.1016/j.jallcom.2022.164160

Cited by 6 publications

(6 citation statements)

References 37 publications

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“…The SiC particles were purchased from Fiven ASA (Oslo, Norway) and were composed of cubic β-SiC and hexagonal/rhombic α-SiC structures, with an average particle size of 20 µm. The details of the casting procedure are described elsewhere [24].…”

Section: Methodsmentioning

confidence: 99%

On the Possibility of Using Secondary Alloys in the Production of Aluminum-Based Metal Matrix Composite

Lattanzi,

Jarfors,

Awe

2024

Crystals

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Aluminum-based composites provide tribological performance and thermophysical properties that, combined with being lightweight, are suitable for their application in automotive brake discs. Aluminum alloys allow the use of secondary materials to produce composites, with the drawback of several elements, impurities, and oxides that can harm the mechanical and thermophysical properties. This preliminary study explored the mechanical and thermophysical performance of a composite material produced with a secondary matrix alloy. Overall, the results are promising, with a minimal decrease in mechanical and thermophysical properties despite clustered silicon carbide particles in the composite with the secondary matrix. The challenges in effectively dispersing carbides in the melt seem linked to aluminum oxides, and future microstructural investigations will aim to clarify this aspect.

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Section: Methodsmentioning

confidence: 99%

On the Possibility of Using Secondary Alloys in the Production of Aluminum-Based Metal Matrix Composite

Lattanzi,

Jarfors,

Awe

2024

Crystals

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“…The Flow-3D simulations approximated the flow velocity, θ, to be 8.15 m/s. The composite density was calculated using the rule of mixtures, shown in Equation (10). According to Figure 5, the stirring velocity of 500 rpm corresponded to a torque, T, calculated as 0.051 N×m.…”

Section: The Shear Stress Generated By the Stirring Devicementioning

confidence: 99%

“…The brake discs must be durable, withstand wear, and provide friction to function correctly. Moreover, the braking system, as such, must be thermally stable [10]. The SiC particle (SiCp)-reinforced Al metal matrix composite (MMC), thanks to its high modulus and strength, high specific weight ratio, and wear resistance, is suitable for brake disc application.…”

Section: Introductionmentioning

confidence: 99%

On the Efficient Particle Dispersion and Transfer in the Fabrication of SiC-Particle-Reinforced Aluminum Matrix Composite

Du,

Lattanzi,

Jarfors

et al. 2023

Crystals

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Lightweight SiC-particle-reinforced aluminum composites have the potential to replace cast iron in brake discs, especially for electric vehicles. This study investigates the effect of SiC particle size and matrix alloy composition on the resulting transfer efficiency and particle distribution. The performance of a specially designed stirring head was studied using a water model, and the stirring head conditions were assessed to understand the particle transfer and dispersion mechanisms in the molten aluminum. The standard practice of thermal pre-treatment promotes the wetting of the reinforcing particles and commonly causes clustering before the addition to the melt. This early clustering affects the transfer efficiency and particle dispersion, where their interaction with the melt top-surface oxide skin plays an important role. In addition, the transfer efficiency was linked to the particle size and the chemical composition of the matrix alloy. Smaller particles aggravated the degree of clustering, and the addition of rare earth elements as alloying elements in the matrix alloy affected the particle dispersion. The stirring parameters should be selected to ensure cluster disruption when the carbides are added to the melt.

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“…The addition of transition metals [ 18 , 19 , 20 ] and rare earth elements [ 21 , 22 ] to the matrix alloy helps to improve the maximum operating temperature of the composite material. Several methods produce metal matrix composites [ 23 ], such as powder metallurgy, pressure infiltration, spray deposition, and stir casting.…”

Section: Introductionmentioning

confidence: 99%

“…Other work on Al-based composites with Zener–Hollomon includes Hao et al [ 27 ] who studied the 35% SiCp/2024Al metal matrix composites and indicated that the flow stress behaviour of composite during hot compression deformation can be represented by a Zener–Hollomon parameter in the hyperbolic sine form. Lattanzi et al [ 20 ] did research on the relationship between the Z parameter and temperatures and strain rates, and it indicated that peak stress at high temperatures and low strain rates was reduced because of dynamic recovery and recrystallisation, and Z values decreased. Conversely, the Z values increased at low temperatures and high strain rates, indicating dislocation generation.…”

Section: Introductionmentioning

confidence: 99%

The Influence of Ce, La, and SiC Particles Addition on the Formability of an Al-Si-Cu-Mg-Fe SiCp-MMC

Lattanzi

Jarfors

et al. 2022

Materials

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Road transport and the associated fuel consumption plays a primary role in emissions. Weight reduction is critical to reaching the targeted reduction of 34% in 2025. Weight reduction in moving parts, such as pistons and brake disc rotors, provide a high-impact route to achieve this goal. The current study aims to investigate the formability of Al–Si alloys reinforced with different fractions and different sizes of SiCp to create an efficient and lightweight Al-MMC brake disk. Lanthanum (La) and cerium (Ce) were added to strengthen the aluminium matrix alloy and to improve the capability of the Al-MMC brake discs to withstand elevated temperature conditions, such as more extended braking periods. La and Ce formed intermetallic phases that further strengthened the composite. The analysis showed the processability and thermal stability of the different material’s combinations: increased particle sizes and broader size range mixture supported the formation of the SiCp particle interactions, acting as an internal scaffolding. In conclusion, the additions of Ce and La strengthened the softer matrix regions and resulted in a doubled compression peak strength of the material without affecting the formability, as demonstrated by the processing maps.

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The influence of Ni and Zr additions on the hot compression properties of Al-SiCp composites

Cited by 6 publications

References 37 publications

On the Possibility of Using Secondary Alloys in the Production of Aluminum-Based Metal Matrix Composite

On the Possibility of Using Secondary Alloys in the Production of Aluminum-Based Metal Matrix Composite

On the Efficient Particle Dispersion and Transfer in the Fabrication of SiC-Particle-Reinforced Aluminum Matrix Composite

The Influence of Ce, La, and SiC Particles Addition on the Formability of an Al-Si-Cu-Mg-Fe SiCp-MMC

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