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1000 1800 900 1600 Full annealing and hardening 800 A A1 Spheroidizing anneal-1200 Process anneal 600 1000 500 0 0.2 04 0.6 08 1.0 1.2 14 1.6 Figure 2: Summary of process beat treatments for steels on an equilibrium diagram. Question 3. (3Points) Using Figure 2 estimate the temperature (in C) for a fall anneal of a low carbon Weight percent carbon steel? 1. 1650°C 2. 900°C 3. 600PC 4. 700°C Question 4. (3 Points) Which of the following is a typical reason heat treatment is performed on a work- piece? 1. hardening 2. residual stress relief 3. tempering 4. all of the above Question 5. (3 Points) If one startes with Austenite and then rapidly quenches, the result is 1. 6-ferrite 2. Ironite 3. Pearlite 4. Martensite
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