1. A 0.3% carbon steel is austenitized at 850C for one hour and then quenched to room temperature. Determine the amount, composition and hardness of the martensite that forms. 900 1 leur Acol 7+ Fo C 800 Temperature a+ a 0.0218 700 11 0 0.2 0.4 A = 727'C 0.77 a Fea 0.6 0.8 1.0 1.2 1.4 Weight percent carbon 1 6.67 Figure 1. 2. A steel containing 0.95% carbon is heated to 850C and held for one hour. It is then quenched to room temperature. Determine the amount, composition and hardness of the martensite that forms (use Figure 1)