In process, the metal is heated to almost recrystallization temperature and then cooled at faster rate.

need correct and explained properly

(3) Metals tend to expand when heated and contract when cooled. If a clock has a pendulum made of a bob attached to the end of a metal rod (as opposed to the string we used in our lab), completely describe the effect that temperature would have on the accuracy of the clock (i.e., would the clock run too fast or too slow) and why? k

(b) The yield stress for a metal changes from 450 Nmm-2to 610 Nmm-2 when the average grain diameter decrease from 0.043 mm to 0.022 mm. Determine the yield stressfor the same metal with an average grain diameter of 0.030 mm.