Consider a single crystal of metal M that has a face-centred cubic (FCC) crystal structure. (a) Draw and label the THREE possible slip systems in a unit cell of metal M crystal if slip occurs on its (111) plane under loading. (9 marks) (b) If metal M is subjected to a tensile stress in the direction of [11X] and the critical resolved shear stress is 50MPa, calculate the value of for each slip system stated in part (a) at which the single crystal will start to deform plastically. Given that X is the remainder of the last digit of your student number /3, e.g. 21345678A:8/3, remainder X=2. (21 marks) (c) Justify which slip system(s) in part (b) is(are) the most favourably oriented? (4 marks)