a) Show/draw the Miller-indexed direction of tungsten with BCC [111] and the Miller-index direction of aluminum with a FCC [111] on the right-hand coordinate system.
b) Since the atomic radius of tungsten is 1.37 Ã… and the atomic radius of aluminum is 1.43 Ã…, calculate the lattice parameters of the systems.
c) Calculate the atomic density of the directions.
d) Which of the materials can be formed more easily?