Evaluating the 〈111〉, 〈110〉, and 〈001〉 slip directions of the B2 intermetallic by way of anisotropic elasticity theory

Based on anisotropic elasticity theory, general expressions for the fault width as a function of character angle, fault energy, and the direction and magnitude of the partials that form the fault, are developed for the $〈111〉\left\{110\right\}$, $〈110〉\left\{110\right\}$, and $〈001〉\left\{110\right\}$ slip systems of the $B2$ intermetallic. Ultimately, we find that only $〈111〉\left\{110\right\}$ form well defined partials, while $〈110〉\left\{110\right\}$ and $〈001〉\left\{110\right\}$ dislocations remain diffuse. Additionally, for almost all $B2$ intermetallics studied here, the behavior of the fault widths as a function of character angle deviates significantly from isotropic elasticity theory. Based on these findings, line energy calculations are also performed, and the relative importance of the $〈111〉\left\{110\right\}$, $〈110〉\left\{110\right\}$, and $〈001〉\left\{110\right\}$ slip systems within the family of $B2$ intermetallics are discussed.