Chapter 12, Problem 12.101AP

Interpretation Introduction

Interpretation: A way corresponding to which the $\text{Cu}$ and $\text{Al}$ atoms can be allocated between bcc unit cells, that is consistent with the formula of the alloy is to be stated.

Concept introduction: Body centered cubic structure (bcc) has 8 atoms at each corner and one atom at the center and the corners atoms are shared by other cubes. It has a coordination number 8.

In bcc, there are net only two atoms and the atoms in bcc are not so closely packed. The metals that have bcc structure are harder and less malleable.

To determine: A way corresponding to which the $\text{Cu}$ and $\text{Al}$ atoms can be allocated between bcc unit cells, that is consistent with the formula of the alloy.