Mechanical Behavior of Al–Al2Cu–Si and Al–Al2Cu Eutectic Alloys

Lei, Qian; Wang, Jian; Misra, Amit

doi:10.3390/cryst11020194

Cited by 10 publications

(4 citation statements)

References 24 publications

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“…The Al-Cu alloy usually consists of many intermetallic phases with increases in Cu content, thus 33wt.% Cu elements are potentially to form some θ phase in their microstructure. This phase with an Al2Cu structure is intermetallic, which has good hardness and strength [25].Furthermore, the compaction parameters influence the compressive strength of the 85Al15Cu alloy, see Fig. 6.…”

Section: Density Of the Model Al-cu Alloymentioning

confidence: 99%

The role of Cu element and compaction pressure on microstructure and mechanical Properties of Al-Cu binary alloy synthesized by powder metallurgy

Suprianto,

Muhammad Ramadhan,

Almi Syafroza

et al. 2023

dinamis

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Al-Cu alloys are promising material for engineering field due to their good mechanical properties. These characteristics could be obtained by addition of some elements and correct selected processes parameter. The purposes of this current study to investigate the effect of Cu contents and compaction pressure on microstructure evolution and mechanical properties of the Al-Cu alloy synthesized by powder metallurgy route. High purity Al and Cu elements are used as starting material with composition (21.0, 24.0, 27.0, 30.0, and 33.0) wt.%Cu with 210 MPa of compaction pressure. The varying compaction pressure 160, 180 and 180 MPa were carried for 15 minute holding time. Furthermore, a conventional sintering at 500oC for 1 hour holding time take place. The hardness test resulted that the increases of Cu contents was successfully improved the hardness, which is the maximum hardness 53.2 HV and 71.47 MPa of the compressive strength obtained by 33wt. Cu addition. On the other hand, the varying of compaction pressure resulted the maximum hardness and compressive strength are 25.6 HV and 60.8 MPa respectively for 200 MPa. The microstructure observation shows the increases of Cu promoted more Cu elements dispersed between the aluminum rinh matrix. The increase of compressive strength is encourages finer Al-Cu grain in the microstructure.

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Section: Density Of the Model Al-cu Alloymentioning

confidence: 99%

The role of Cu element and compaction pressure on microstructure and mechanical Properties of Al-Cu binary alloy synthesized by powder metallurgy

Suprianto,

Muhammad Ramadhan,

Almi Syafroza

et al. 2023

dinamis

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“…Previous experimental studies demonstrated the microstructure re nement by LSR in Al-Cu eutectic alloys [2,3,[6][7][8][9], and Al-Si-Cu ternary alloys [3,10]. In Al-Cu eutectic alloys, a re ned Al-Al 2 Cu interlamellar spacing as low as 17 nm has been observed in the laser-treated region [2].…”

Section: Introductionmentioning

confidence: 95%

“…This rapid solidi cation rate will generate nanoscale microstructural features are not formed in traditional castings [2]. The LSR technique can also improve the mechanical response in the re ned region [3,4]. At such high solidi cation rates the conditions are far from equilibrium and the microsegregation behavior is signi cantly changed [5].…”

Section: Introductionmentioning

confidence: 99%

Microstructure and Microsegregation Characterization of Laser Surfaced Remelted Al-3wt%Cu Alloys

Yao

Ren

Allison

2021

Preprint

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Solidification rates during laser remelting of solid metals occur under solidification conditions that are far from equilibrium conditions. The microstructural evolution and microsegregation behaviors are affected by these conditions. This study comprised an experimental characterization of the ultra-fine microstructure and microsegregation in laser surface remelted regions of a hypoeutectic Al-Cu alloy. The laser scan speed, which controls the cooling rate within the remelted region, was observed to have a significant effect on microstructural features and microsegregation. Dendrite arm spacing was determined to decrease with increasing scan speed and depended on location within the melt pool. A transition of the dendrite morphology was also observed in the melt pools. This transition, which is attributed to the grain orientation change influenced by the laser beam movement, was experimentally characterized. The measured microsegregation profiles show decreasing microsegregation as cooling rate increases which is typically of increasing undercooling and non-equilibrium solidification.

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“…Copper, for example, is added to Al primarily to increase strength [21]. Increasing the Cu content causes a continuous increase in the hardness [22]; however, the strength and especially the ductility depend on how the Cu element is distributed [23]. In AlCuSi aluminum-based alloys, the presence of Cu causes formation of binary (α-Al + Al 2 Cu) and ternary eutectic (α-Al + Al 2 Cu + β-Si).…”

Section: Introductionmentioning

confidence: 99%

Effect of Rotating Magnetic Field on Microstructure in AlCuSi Alloys

Mikołajczak

2021

Metals

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The solidification of AlCuSi alloys with Mn and Fe was studied by rotating a magnetic field to understand the effect of melt flow. The specimens solidified with a forced convection, low cooling rate and low temperature gradient. Electromagnetic stirring generated by an electric coil around the specimens caused a transformation from equiaxed dendritic to rosette morphology, occasionally with spheroids and minor dendrites. The transformation was quantitatively observed with a specific surface Sv, that decreased for almost all alloys and marked the flow effect on α-Al. The computer coupling of phase diagrams and thermochemistry (CALPHAD) technique was applied for the calculation of phase diagrams and property diagrams. Forced convection decreased secondary dendrite arm spacing λ2 in almost all alloys, while it increased slightly in one studied alloy. The length of detrimental β-Al5FeSi phases decreased in the alloy, where β starts to precipitate in the presence of α-Al, while increasing in alloys where β starts as first and grows in the fully liquid melt. The average overall dimension of the Mn-rich phases increased in almost all alloys, and the number density decreased under flow. The modification of spacing for AlSi-eutectics and Al2Cu was analyzed. It was found that the occurrence of Al2Cu does not influence the fluid flow and vice versa.

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Mechanical Behavior of Al–Al2Cu–Si and Al–Al2Cu Eutectic Alloys

Cited by 10 publications

References 24 publications

The role of Cu element and compaction pressure on microstructure and mechanical Properties of Al-Cu binary alloy synthesized by powder metallurgy

The role of Cu element and compaction pressure on microstructure and mechanical Properties of Al-Cu binary alloy synthesized by powder metallurgy

Microstructure and Microsegregation Characterization of Laser Surfaced Remelted Al-3wt%Cu Alloys

Effect of Rotating Magnetic Field on Microstructure in AlCuSi Alloys

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