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Skip to Search Results- 10Impulse Atomization
- 6Rapid Solidification
- 3Al-Si
- 3Microstructure
- 3Undercooling
- 2Electron Backscattered Diffraction
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Characterization of a {(Fe60Co40)75B20Si5}96Nb4 Impulse Atomized Glassy Powder by Neutron Diffraction and Differential Scanning Calorimetry
Download2015-01-01
Bogno, A.-A., Dahlborg, U., Calvo-Dahlborg, M., Riveros, C., Ciftci, N., Henein, H., Sediako, D.
This paper investigates FeCo-based alloy glass formability by high undercooling and high cooling rate solidification technique and the hardness evaluation of the generated samples. For this investigation, Impulse Atomization was used to generate {(Fe60Co40)75B20Si5}96Nb4 powders of different...
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2016-01-01
Bedel, M., Reinhart, G., Bogno, A.-A., Gandin, Ch.-A., Jacomet, S., Boller, E., Nguyen-Thi, H., Henein, H.
The Impulse Atomization process developed at the University of Alberta (Canada) enables metallic powders to be solidified with well controlled process parameters. The inner microstructure of several droplets of Al-4.5wt.%Cu alloy produced by this technique has been investigated by using both...
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Influence of Annealing Treatment on Si Morphology and Strength of Rapid Solidified Al-12 wt.% Si Powders
Download2018-01-01
Gomes, L.E., Spinelli, J.E., Bogno, A.-A., Gallerneault, M., Henein, H.
An experimental study is reported on heat treating rapid solidified Al-12 wt.% Si alloy with 355-425 m powder size. Fast heat treatments at 813K revealed morphological shifts of eutectic Si from the as-atomized condition to those after annealing. The Si network of the as-atomized samples showed...
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2020-01-01
Henein, H., Bogno, A.-A., Hearn, W., Valloton, J.
Cubic metallic alloys generally grow along 〈100〉 directions due to the anisotropy of the solid-liquid interfacial energy. Under rapid solidification conditions, dendrites may deviate from 〈100〉 and develop unusual morphologies. Here, Al-alloy droplets (Al-4.5Cu, Al-10Si, Al-1.9Fe, Al-33Cu, all in...
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2021-01-01
Gancarz, T., Bogno, A.-A., Berent, K., Cempura, G., Schell, N., Chulist, R., Henein, H.
In the case of increasing possibility of application Al alloys the Al5.0Mg0.2Sc alloy with 3.0 and 6.0 Li (wt %) after atomisation process was proposed in this study. To characterise liquid alloys the discharge crucible method was used, which allow to determine density, surface tension and...
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2018-06-01
Hearn, W., Bogno, A.-A., Spinelli, J.E., Valloton, J., Henein, H.
Hypo-eutectic Al-Si alloys are widely used in both the automotive and aerospace industries, however, they still have limited usage as structural materials, due to the inherent morphology of the Si phase that forms within the eutectic structure. This non-ideal Si morphology can be modified, via...
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Quantification of Dendritic and Eutectic Nucleation Undercooling in Rapidly Solidified Hypo-Eutectic Al-Cu Droplets
Download2016-01-01
Bogno, A.-A., Delshad Khatibi, P., Henein, H., Gandin, Ch.-A.
This paper reports on the quantification of primary dendritic and eutectic nucleation undercoolings during rapid solidification of impulse atomized hypo-eutectic Al-Cu droplets. The procedure consists in determining the eutectic fraction of each investigated droplet from the fraction of...
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2018-01-01
Bogno, A.-A., Valloton, J., Jimenez, D.D., Rappaz, M., Henein, H.
Near eutectic Al-Cu droplets were rapidly solidified by Impulse Atomization. A wide range of microstructural scales was obtained at different cooling rates and undercoolings. The micrographs of the investigated samples revealed two distinct zones of different structural morphologies: An undulated...
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2019-01-01
Valloton, J., Bogno, A.-A., Henein, H., Herlach, D.M., Sediako, D.
This paper reports on the undercooling and growth morphology of Al-4.5wt%Cu and Al-4.5wt%Cu-0.4wt%Sc with a focus on the effect of Sc addition. It is found that the addition of Sc reduces the undercoolings of both primary phase and eutectic. In addition, the morphology of the Al-4.5wt%Cu-0.4wt%Sc...
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2017-01-01
Spinelli, J.E., Bogno, A.-A., Henein, H.
Hypereutectic Al-18wt.%Si alloy is widely used in automotive industry as a wear resistant alloy for engine components. However, in the last few years, this traditional composition is being considered for processing by different rapid solidification methods. Positive points include its low thermal...