NEUTRON-DIFFRACTION STUDY OF ATOMIC ORDERING IN THE NIAL INTERMETALLIC COMPOUND ALLOYED WITH TITANIUM

Atomic ordering in the B2 alloys of the Ni-Al-Ti system was studied by neutron diffraction method, The transition of at least 2% of nickel a toms to the aluminum sublattice and the transition of at least 2% of a luminum atoms to the nickel sublattice are possible in the binary inte rmetallic compound both with stoichiometric and with hyperstoichiometr ic nickel contents. If a portion of Al atoms is replaced by Ti atoms, the transition of 2% of nickel atoms to the aluminum sublattice and th e arrangement of all titanium atoms and 2% of nickel atoms in the alum inum sublattice are possible.