2. The figure below depicts four major phase transformations in steels (0.2, 3, 4). Determine whcther the following statements are truc or falsc. 725 Y Pterle. 7+P Temperature Coarse Fine Upper Bainite Lower M @ y + Martensite Martensite Time M (a) The cooling rate of is faster than the cooling rate of . True ()? or False ( )? (b) The steel created by the process is stronger than the steel created by the process of True ( )? or False ( )? (e) The process 2 is called "annealing". True)? or False ( ? (d) The diffusion rate in is higher than the diffusion rate in True ( )? or False ( ? (e) The major nucleation mechanism in and is homogeneous nucleation True)? or False ( )? (1) The major microstructure in the steel created by the process of is cementite. True ()? or False ( (%) The process involves distortion in the crystalline structure as well as diffusion of carbon atoms. True)? or False (? (h) The process creates mechanically brittle BCT crystal structures. True ( )? or False ()