What sort of a microstructure would you get on bubbling Aluminium vapors through a large tank of Helium?
Would it be a glassy microstructure and/or would you get nano-powders?
and/or a new crystal structure formation because of the excess helium which would be present in the aluminium matrix? Ignore metal coolant reactions, if any.
Aluminum vapour would consist of Aluminium atoms, unlike liquid aluminum which consists of clusters. So, on rapid cooling from gas to solid, would you still get an FCC crystal structure for aluminium? (There would be no time for diffusion)