Given below are the room-temperature compliances of several refractory metals. All of these metals have BCC crystal structures. (a) Which of these metals has the highest stiffness along the direction of closest spacing of atoms? (b) Find the elastic strain expected in the [100] for a Cr crystal compressed by a stress in the [001] of 5 MPa. (c) If the Cr crystal in part (b) has a square cross section with {001} faces before loading, will it still be square while the compression is applied? Group on Anisotropy Refractory metal periodic chat factor S11 SR S44(10-11/Pa) VB 0.78 0.51 1,56 0.68 0.66 VB 2.35 3.48 1.21 0.69 -0.23 -0.23 -0.16 -0.04 -0.08 -0.07 0.69 0.99 0.30 0.28 0.24 0.78 1.0 VIB 0.91 0.62