Calculate the recrystallization temperatures (degree C) for chromium, gold, coba

Question

Calculate the recrystallization temperatures (degree C) for chromium, gold, cobalt and magnesium. 2. A one-inch thick steel plate is cold rolled to a new thickness of 0.68-inches Calculate the % cold worked [% CW]. What changes in mechanical properties would accompany the cold working? Explain. An undeformed metal has an average grain diameter of 0.05 mm. How would we reduce the grain diameter 0.02 mm? Explain the procedures you would use and name the processes involved. Be detailed in your explanation.

Explanation / Answer

Answer to question 1)

The temperature at which half the quantity of material is recrystallized in one hour is the recrystallization temperature of the metal. It depends on the melting point (Tm) and the impurities in it. For pure metal the recrystallization temperature range is 0.3-0.4Tm while for alloys it is 0.5Tm

The melting point of the metals and their recrystallization ranges are as follows:

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