BONDING CHARACTERISTICS OF A1_3Ti ALLOYS WITH DIFFERENT STRUCTURE OR COMPOSITION
不同结构及成分的Al3Ti合金成键特征的分析

The bonding characteristics of Al3Ti and its alloys have been investigated by XPS technique. The anisotropic bonding of Al3Ti stablizes the DO22 crystal structure. In the Mn or Ni modified Al3Ti alloy appear the isotropic bonds which favour the Ll2 structure.Al(67)Ti(25)Mn8 alloy shows more spherical and weakly directional bonds than those in Al(67)Ti(25)Ni8. So the Mn-modified alloy is more ductile than the Ni modified alloy. Correspondent: HU Gengxiang, professor, Department of Materials Science, Shanghai Jiaotong University,Shanghai 200030