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Question 5: Q 5A: What is Normalizing and Spheroidizing? (5) Q 5B: A steel is heated until 40% austenite, with a carbon content of 0.5%, forms. Estimate the temperature and the overall carbon content of the steel? (10) Q5C: An Al-2.5% Cu alloy is solution-treated, quenched, and overaged at 230°C to produce a stable microstructure. If the u precipitates as spheres with a diameter of 11200 Å and a density of 3.260 g/m3, determine the number of precipitate particles per cm’ (Refer Figure 3) (10) 700 660) L + E 626 Lun 591 600 R a+L 5.65 548 +L 52.5 33.2 500 - 400 Temperature (°C) 0+1 Q+ 300 Ideal Typical 200 ΑΙ 60 10 20 30 40 50 Weight percent copper Figure 3: Reference figure for 95C.