Question

The intermetallic compound Ni3Al (the main strengthening phase in Ni superalloys) is known to pseudo-fcc structure (i.e. if the identities of the atoms are ignored, the structure is fcc). possess a The structure is also ordered, in which the Ni and Al atoms occupy designated sites with order in the pseudo-fcc unit cell (i.e. they are not randomly seated). Plot the Ni3Al unit cell with Ni and Al identified, and justify based on the formula of the compound

Answer 1

AL AL n lattte polnts CORNOLR Eaa latitepetts ontibute AL : 50 Each lare contdre centdoute in hate tentera OLee Ni 2 6 SaL wakes Ni AL luntt cti -(78