Question

A single grain (crystal) of face-centered cubic copper lies completely across a copper wire, 0.15-inch diameter, which is being pulled in tension axially. The axial direction of the wire is in the [112] direction of the crystal. The critical shear stress required to produce slip on the [011](1 1 1) slip system in a copper crystal is 1 MPa. What axial load must be applied to the wire to produce slip in the [011] direction on the (1 1 1) plane in the crystal?

Answer 1