Effect of High-Energy Ultrasound and Mixed Rare Earths Modification on Microstructure of Semisolid AlSi11Cu3 Alloy

Dong, Xiaopeng; Wang, Yunfeng; Xu, Lixiao; Liu, Zhibin; Yan, Hong

doi:10.1007/s40962-022-00825-6

Cited by 3 publications

(1 citation statement)

References 25 publications

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“…In this study, the ultrasonic power and frequency were 2.1 kW and 20 kHz, respectively. In previous studies, it was found that under these parameters, the cavitation effects and acoustic streaming effects of ultrasound in melt produced the best effect [28]. The time step was set to 1 × 10 −6 s, the total number of steps was 10 5 , the pressure base solver was selected for solving, and the control equation was selected in the first-order upwind discrete format.…”

Section: Ultrasonic Cavitation Modelmentioning

confidence: 99%

Microstructure and Mechanical Properties of Cu-CoatedCarbon-Nanotubes-Reinforced Aluminum Matrix Composites Fabricated by Ultrasonic-Assisted Casting

Dong,

Zeng,

Yan

2024

Metals

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Carbon nanotubes (CNTs) are considered ideal nanoscale reinforcement for the development of high-performance metal matrix composites due to their unique structure and excellent mechanical properties. However, CNTs are easy to agglomerate and have poor wettability with the aluminum matrix, resulting in unsatisfactory effects when added to the aluminum melt. In this study, Cu-coated carbon nanotubes (Cu@CNTs)-reinforced aluminum matrix composites were fabricated by high-energy ultrasonic-assisted casting. Moreover, the effects of different Cu@CNTs content on the microstructure and mechanical properties of aluminum matrix composites were explored. Meanwhile, Fluent 19.0 software was used to further explore the function of ultrasonic vibration in the melt. The results demonstrated that the mechanical properties of composite with 1.2 wt% Cu@CNTs are optimal. Compared with the matrix, the composite with 1.2 wt% Cu@CNTs displayed a 39.3% increase in yield strength, 53.5% increase in ultimate tensile strength, and 5.7% increase in elongation. The simulation results showed that the uniform dispersion of Cu@CNTs and grain refinement can be attributed to the acoustic streaming effect and cavitation effect of high-energy ultrasound. The improvement of the properties of the composites can be attributed to the grain refinement and the load-bearing effect of CNTs.

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Section: Ultrasonic Cavitation Modelmentioning

confidence: 99%

Microstructure and Mechanical Properties of Cu-CoatedCarbon-Nanotubes-Reinforced Aluminum Matrix Composites Fabricated by Ultrasonic-Assisted Casting

Dong,

Zeng,

Yan

2024

Metals

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Effect of Low-Intensity Ultrasound on the Temperature Field and Microstructure of 2219 Aluminum Alloy

Yang,

Jiang,

et al. 2023

Inter Metalcast

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Fundamentals of Ultrasonic Treatment of Aluminum Alloys

Jaime,

Puga,

Prokic

et al. 2024

Inter Metalcast

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High integrity cast aluminum components require the use of molten metal processing technologies prior to casting. These include processes such as degassing to reduce porosity, filtration to reduce inclusion content, addition of grain refiners to refine the grain structure, and the addition of chemical modifiers to alter the morphology of eutectic phases. Ultrasonic treatment (UST) is a novel processing method through which ultrasonic energy is introduced into molten metal for the purpose of degassing as well as modifying the cast microstructure. To optimize the use and applications of UST, it is necessary to examine the fundamental mechanisms and the limiting values of controlling parameters. The effectiveness of UST to perform a desired application within a molten metal is highly dependent on temperature, volume of liquid metal, and the state of the frequency in use. The mechanisms of ultrasonic energy imparted within molten metal will be discussed as well as the benefits of UST during molten metal processing.

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Effect of High-Energy Ultrasound and Mixed Rare Earths Modification on Microstructure of Semisolid AlSi11Cu3 Alloy

Cited by 3 publications

References 25 publications

Microstructure and Mechanical Properties of Cu-CoatedCarbon-Nanotubes-Reinforced Aluminum Matrix Composites Fabricated by Ultrasonic-Assisted Casting

Microstructure and Mechanical Properties of Cu-CoatedCarbon-Nanotubes-Reinforced Aluminum Matrix Composites Fabricated by Ultrasonic-Assisted Casting

Effect of Low-Intensity Ultrasound on the Temperature Field and Microstructure of 2219 Aluminum Alloy

Fundamentals of Ultrasonic Treatment of Aluminum Alloys

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