AUTHOR=Fredriksson Hasse 

TITLE=Analysis of the Solidification Process of Metal Alloys Under Microgravity Conditions

JOURNAL=Frontiers in Metals and Alloys

VOLUME=Volume 1 - 2022

YEAR=2022

URL=https://www.frontiersin.org/journals/metals-and-alloys/articles/10.3389/ftmal.2022.912723

DOI=10.3389/ftmal.2022.912723

ISSN=2813-2459

ABSTRACT=The solidification of metal alloys under low gravity conditions gives a deviation in the coarseness of the structure compared to solidification under normal gravity conditions. The reason for this is related to changes in many other physical relations. The solidification undercooling is mainly lower the partition coefficient and the heat of fusion is changed during microgravity conditions. Experimental results are presented and analysed in order to find a unified theoretical understanding.
The analysis gives that the atoms vibrations increase with decreasing gravity. Especially the amplitude will increase. The explanation to this is given by a decrease in the binding energy between the atoms with decreasing gravity. And the decrease is larger for the liquid than for the solid.