| People | Locations | Statistics |
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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Presz, Wojciech
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Topics
Publications (14/14 displayed)
- 2024Ultrasonic Atomization as a Method for Testing Material Properties of Liquid Metals
- 2020Flexible system for micro-clinching processes design and analysiscitations
- 2020Vibration asisted progresive-die micro-blanking
- 2019Ultrasonic vibrations as an impulse for glass transition in microforming of bulk metallic glasscitations
- 2018Determination of material distribution in heading process of small bimetallic barcitations
- 2018THE METHOD OF MICRO-UPSETTING IN UNEVEN TEMPERATURE DISTRIBUTION
- 2018Dynamic effect in ultrasonic assisted micro-upsettingcitations
- 2017ULTRASONIC ASSISTED MICROFORMING
- 2017Application of Complex Micro-die for Extrusion of Micro-rivets for Micro-joining
- 2017Application of semi-physical modeling of interface surface roughness in design of pre-stressed microforming diescitations
- 2016New method for micro-clinching analysis
- 2012Mikrostructure transformations in austempered ductile iron during deformation by dynamic hardness test
- 2011Influence of Micro‐Rivet Manufacturing Process on Quality of Micro‐Jointcitations
- 2010Analysis of the influence of a rivet yield stress distribution on the micro-SPR joint - initial approachcitations
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article
Ultrasonic vibrations as an impulse for glass transition in microforming of bulk metallic glass
Abstract
The paper presents the idea of the utilisation of ultrasonic vibrations in microforming at elevated temperature of a bulk metallic glasses as an impulse of additional energy for initiating a glass transition at lower than nominal temperature. The method of micro-upsetting at elevated temperature with non-uniform temperature distribution (MUNUT) was used. It is shown that applying ultrasonic vibrations on the tool could replace the part of the thermal energy needed for achieving the supercooled liquid state necessary for the microforming of bulk metallic glass. The results of research are limited to the analysis of two micro-specimens only and their final state of deformation. The commercial FEM code was used in the Thermal/Structural analysis class to determine the temperature distribution within the micro-specimen and to justify the linear approximation of this distribution. It was shown that the application of ultrasonic vibrations at 20 kHz frequency and the amplitude PP = 36.5 μm under the experiment conditions lowered the transformation temperature by approx. 32 °C. Results suggesting that applying ultrasonic vibrations could be also used as the tool which would provide additional energy for the transformation at the limited area of the micro-product.