Ultrasonic processing of molten and solidifying aluminium alloys: overview and outlook

DG Eskin - Materials Science and Technology, 2017 - journals.sagepub.com
Ultrasonic melt processing attracts since the 1930 a lot of interest both from academic
researchers and industry. In the last 10 years the interest to ultrasonic melt processing grew …

Demonstration of enhanced piezo-catalysis for hydrogen generation and water treatment at the ferroelectric curie temperature

TP Pham Thi, Z Yan, G Nick, K Hamideh… - Iscience, 2020 - cell.com
Hydrogen can contribute significantly to the energy mix of the near future, as it is an
attractive replacement for fossil fuels due to its high energy density and low greenhouse gas …

[HTML][HTML] On the governing fragmentation mechanism of primary intermetallics by induced cavitation

A Priyadarshi, M Khavari, T Subroto, M Conte… - Ultrasonics …, 2021 - Elsevier
One of the main applications of ultrasonic melt treatment is the grain refinement of
aluminium alloys. Among several suggested mechanisms, the fragmentation of primary …

[HTML][HTML] An atomistic study on the HELP mechanism of hydrogen embrittlement in pure metal Fe

MS Hasan, MF Kapci, B Bal, M Koyama, H Bayat… - International Journal of …, 2024 - Elsevier
Abstract The Hydrogen Enhanced Localized Plasticity (HELP) mechanism is one of the most
important theories explaining Hydrogen Embrittlement in metallic materials. While much …

[HTML][HTML] In situ observation and analysis of ultrasonic capillary effect in molten aluminium

I Tzanakis, WW Xu, DG Eskin, PD Lee… - Ultrasonics …, 2015 - Elsevier
An in situ synchrotron radiographic study of a molten Al–10 wt% Cu alloy under the
influence of an external ultrasonic field was carried out using the Diamond-Manchester …

[HTML][HTML] Numerical modelling of ultrasonic waves in a bubbly Newtonian liquid using a high-order acoustic cavitation model

GSB Lebon, I Tzanakis, G Djambazov… - Ultrasonics …, 2017 - Elsevier
To address difficulties in treating large volumes of liquid metal with ultrasound, a
fundamental study of acoustic cavitation in liquid aluminium, expressed in an experimentally …

[HTML][HTML] Characterisation of the ultrasonic acoustic spectrum and pressure field in aluminium melt with an advanced cavitometer

I Tzanakis, GSB Lebon, DG Eskin… - Journal of Materials …, 2016 - Elsevier
Currently, fundamental experimental studies in liquid metals are limited as there are very
few available experimental tools for directly measuring acoustic cavitation in such extreme …

[HTML][HTML] Calibration and performance assessment of an innovative high-temperature cavitometer

I Tzanakis, M Hodnett, GSB Lebon… - Sensors and Actuators A …, 2016 - Elsevier
This paper describes a series of systematic experimental studies to evaluate the
performance of a high-temperature cavitometer under well-controlled conditions. The …

Contactless ultrasound generation in a crucible

V Bojarevics, GS Djambazov, KA Pericleous - Metallurgical and Materials …, 2015 - Springer
Ultrasound treatment is used in light alloys during solidification to refine microstructure,
remove gas, or disperse immersed particles. A mechanical sonotrode immersed in the melt …

Numerical characterization of acoustic cavitation bubbles with respect to the bubble size distribution at equilibrium

K Kerboua, O Hamdaoui, A Alghyamah - Processes, 2021 - mdpi.com
In addition to bubble number density, bubble size distribution is an important population
parameter governing the activity of acoustic cavitation bubbles. In the present paper, an …