1.A single metallic crystal is oriented such that the normal to the slip plane and the slip directions are at angles of 50 and 40 degrees respectively, with the tensile axis. If the dislocations in the plane start moving when the resolved shear stress is 6.2 MPa, what is the tensile stress at which yielding occurs?
2.What is atomic packing factor? Which crystalline structures exhibit the maximum atomic packing factor values? Please provide detailed solutions, steps and explanations