摘要
Due to their attractive characteristics such as low density （3,4g/cm<sup>3</sup>）, relatively high melting point （1613 K）, good high-temperature strength and oxidation resistance, the Al<sub>3</sub>Tibase alloys have been considered good candidates for high-temperature structural purpose. The stoichiometric Al<sub>3</sub>Ti intermetallic compound has a tetragonal DO<sub>22</sub> crystal structure. By replacing a certain amount of At with Fe, Mn, Cr, or Ni, etc., the DO<sub>22</sub> structure
