(Solved): 1. Explain the different types of interphase boundaries with schematic diagram. 2. Derive the expres ...

1. Explain the different types of interphase boundaries with schematic diagram.
2. Derive the expression for CRSS for slip in a single crystal. Determine the tensile stress that is applied along the [11?0] axis of a silver crystal to cause slip on (11?1?)[01?1]. Also it is given that the CRSS is 6 MPa.
3. Calculate the Schmid Factors for a FCC crystal in all 3 closed packed directions on (111) plane when a tensile stress is applied on [110] direction.
4. The yield strength obtained for iron samples are 340 MPa and 390 MPa corresponding to grain size of 25 ?m and 14 ?m respectively. Determine the values of ?0 and ky and also calculate the yield strength of the material when the grain size is 10 ?m.
5. What are geometrically necessary dislocations, describe with a sketch and their requirement during plastic deformation?
6. (i). Determine the critical resolved shear stress for an iron crystal which deforms by simultaneous slip on (110)[111], (110)[111], (110)[111], and (110)[111] when the tensile stress along [010] is 95.2 MPa. (ii). Compare and contrast the deformation mechanisms of slip and twinning.