Bonding and Fracture Characteristics at α2/γ Interface in TiAl Alloy with B Addition

Abstract

Abstract: The bonding characteristics of (0001)α2‖(111)γ interface in two-phase TiAl alloy have been investigated with the recursion method. The results of bond order integral and interaction energy between atoms are presented. The effects of B on atoms bonding both in constituent phase and at the α2/γ interface have been studied. The correlation between the mechanical properties of the alloy and the bonding at the interface has been discussed. The results suggest that B segregation to the interface benefits the ductility. This is supported by therelated experiment.

Key words:

Senying LIU, Dongliang ZHAO, Rongze HU, Chongyu WANG, Ping LUO. Bonding and Fracture Characteristics at α2/γ Interface in TiAl Alloy with B Addition[J]. J Mater Sci Technol, 1999, 15(01): 43-47.

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