Search

2017-01-01

Spinelli, J.E., Hearn, W., Bogno, A.-A., Henein, H.

Understanding the influence of rapid solidification conditions on the formed microstructure is important to determine how process conditions affect the final mechanical properties. In this work the rapid solidification of hypoeutectic and hypereutectic Al-xSi (x=10wt. %, 18wt %) alloys was...

2022-01-01

Henein, H., Bogno, A.-A., Yin, S., Natzke, P., Gallerneault, M.

Scandium (Sc) is an expensive alloying element which has an important effect on the properties of aluminum alloys. It is of interest to determine for a variety of solidification conditions the effect of minor addition, in the hypoeutectic levels, of Sc on Al alloys. This study builds on past work...

2021-01-01

Yin, S., Bogno, A.-A., Henein, H., Gallerneault, M.

This paper studies the solidification of hypoeutectic Al–Mg–Sc powders and spray deposited (SD) strips, generated by Impulse Atomization. The effects of Mg content in hypoeutectic Al–Mg–Sc was examined with respect to the extended solid solubility of Mg and Sc in α–Al, microstructure refinement...

2016-01-01

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...

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...

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...

2018-01-01

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...