Chapter 4, Problem 4.63P

For BCC iron, calculate the average distance between dislocations in a smallangle grain boundary tilted ${0.50}^o.\left[SeeFigure4-15\left(a\right).\right]$

Figure 4-15(a) The small angle grain boundary is produced by an array of dislocation, causing an angular mismatch $\theta$ between the lattices on either side of the boundary. (Repeated for Problem 4-61, 4-62 and 4-63.)