Reduction of twinning in directional recrystallization of nickel base superalloys.

摘要

The density of twins resulting from directional re-crystallization of nickel base superalloys can be substantially reduced by the addition of a small but critical amount of boron to the material prior to the directional recrystallization step. From about .010 to about .015% boron by weight will reduce twin density without adversely affecting other material properties.