The simultaneous application of variable frequency ultrasonic and low frequency electromagnetic fields in semi continuous casting of AZ80 magnesium alloy

Chen, Xingrui; Jia, Yonghui; Liao, Qiyu; Wang, Jia; Le, Qichi; Ning, Shaochen; Yu, Faquan

doi:10.1016/j.jallcom.2018.09.300

Cited by 58 publications

(13 citation statements)

References 28 publications

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“…However, these methods also possess great disadvantages, such as the complicated production process requirements and high production costs. Recent studies show that the ultrasonic treatment in melt processing can improve the preparation and processing environment of materials, bringing about a better microstructure and improved properties [26] , [27] , [28] , [29] , [30] , [31] , [32] , [33] . Ultrasonic fields have acoustic cavitation and acoustic streaming effects [34] , [35] , [36] , which can reduce the interface energy between the particle and the melt, and thus activate the impurities to act as effective nucleation substrates.…”

Section: Introductionmentioning

confidence: 99%

Wetting of aluminium and carbon interface during preparation of Al-Ti-C grain refiner under ultrasonic field

Zhao

Ning

et al. 2021

Ultrasonics Sonochemistry

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Highlights Providing a new method for the preparation of Al-Ti-C grain refiner. The contact angle θ of aluminum-carbon interface is reduced under ultrasonic field. TiC particles are detached from the interface driven by sound pressure, which results that the wetting interface is updated in real time. The wetting and spreading of the aluminum melt on the graphite surface under ultrasonic field are simulated.

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Section: Introductionmentioning

confidence: 99%

Wetting of aluminium and carbon interface during preparation of Al-Ti-C grain refiner under ultrasonic field

Zhao

Ning

et al. 2021

Ultrasonics Sonochemistry

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“…EN measurements were carried out using three different areas of Mg metal (cylindrical type), including large symmetrical (LS: 100-100 mm 2 ), small symmetrical (SS: 3-3 mm 2 ), as well as asymmetrical (As: 3-300 mm 2 was utilized to cover them in a way that exposure of one surface with the desired area (mentioned above) to the solution was performed as the WE surface. Next, smooth emery paper in a range of different degrees, from 400 to 2,500 grade, was used to abrade the working surface, after which distilled water and acetone were used for washing and degreasing the samples.…”

Section: Methodsmentioning

confidence: 99%

“…Automobile and aerospace industries use magnesium and its alloys as the main material in a wide range of applications, due to their great strength-to-weight ratio. [1][2][3][4] Examination of these materials as appropriate biodegradables has been currently carried out. [5] Mg and its alloys are easily corroded due to the relatively poor corrosion resistance.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of the localized corrosion on Mg electrode surface by electrochemical noise technique

Naghizade

Hosseini

Shahidi

et al. 2020

Materials & Corrosion

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The symmetrical and asymmetrical electrodes made of Mg were studied in 0.1-M NaCl electrolyte adjusted at pH 12. The statistical and wavelet methods were employed for analyzing the electrochemical current noise (ECN) signals. The asymmetric configuration was used for electrochemical detection of filiform corrosion on Mg electrode. The real time scale of the dominant transients of the asymmetric electrodes was detected on the basis of the maximum peak in the SDPS plots. The SDPS values of the real time scale crystals of the ECN signals resulting from asymmetrical electrodes increased with the increase in immersion time due to the onset of filiform corrosion.

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“…In this section, we will show you the comparison of traditional fixedfrequency field (SUF), variable-frequency ultrasonic field (VUF), and lowfrequency electromagnetic field (LEF) on DC casting of magnesium alloy. The interaction between LEF and VUF is also discussed [22][23][24]. Figure 16 demonstrates the experimental apparatus for ultrasonic DC casting.…”

Section: Ultrasonic Melt Treatment On DC Casting Process Of Magnesiummentioning

confidence: 99%

Application of Ultrasonics on Preparation of Magnesium Alloys

Chen¹,

Le²

2020

Sonochemical Reactions

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This chapter mainly describes the application of ultrasonic on preparation of magnesium alloys, which includes all of the interesting and novel research results of authors in the past decade. The chapter includes the following topics to readers: the ultrasonic cavitation behavior in magnesium alloys; the effect of ultrasonic treatment on melt structure; ultrasonic degassing of magnesium alloys; effect of ultrasonic melt treatment on microstructure of magnesium alloys; dual-frequency ultrasonic treatment on solidification of magnesium alloys; and ultrasonic directchill (DC) casting process of magnesium alloys billets, including the novel variablefrequency ultrasonic technology. The chapter almost covers all the aspects of ultrasonic application on preparation of magnesium alloys and can help readers have a systematic understanding of ultrasonic melt treatment on magnesium alloys.

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The simultaneous application of variable frequency ultrasonic and low frequency electromagnetic fields in semi continuous casting of AZ80 magnesium alloy

Cited by 58 publications

References 28 publications

Wetting of aluminium and carbon interface during preparation of Al-Ti-C grain refiner under ultrasonic field

Wetting of aluminium and carbon interface during preparation of Al-Ti-C grain refiner under ultrasonic field

Evaluation of the localized corrosion on Mg electrode surface by electrochemical noise technique

Application of Ultrasonics on Preparation of Magnesium Alloys

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