About this Abstract |
Meeting |
2021 TMS Annual Meeting & Exhibition
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Symposium
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Frontiers in Solidification Science VIII
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Presentation Title |
Interaction of Hydrogen-bubbles with the Approaching Solidification Front in Al-Cu Melt - An In-situ Study |
Author(s) |
Thomas Werner, Juliane Baumann, Maike Becker, Christoph Pickmann, Laszlo Sturz, Florian Kargl |
On-Site Speaker (Planned) |
Thomas Werner |
Abstract Scope |
Much research has already been focused on the solid/bubble interaction in the interdendritic space for solidifying materials. However, commonly, bubble-nucleation isn’t limited to the mushy zone, but also appears in the melt in front of the advancing solid/liquid interface in directional solidification. In the present study on an Al - 10%wt. Cu alloy, the interaction between this type of bubbles and the approaching solidification front becomes apparent under in-situ X-ray radiography observation and allows for new insights on the influence of bubbles on the solidifying microstructure. The observed effects comprise bulging of the solidification front towards the bubbles, bending of dendrites in front of the bubbles, coronal outgrowths surrounding the bubbles, as well as bubble-growth, -pushing, and -eruption. |
Proceedings Inclusion? |
Planned: |