raling Now grains growing Figure 6.29 indicates recrystallization of a rolled sh

Question

raling Now grains growing Figure 6.29 indicates recrystallization of a rolled sheet as the process continues. What is the driving force (i.e. what causes it) for recrystallization? (2 points) Wrought produet with large grains product wieh grains rains elongated grains FIGURE 629 Changes in the grain structure of metals auning hot roling. This is an effedtive o reduce grain size and refine the microstruchure in metals, resuting n improved strength and good ductility. In this process cast structures of ingots or continuous castings are converted to a wrought structure

Explanation / Answer

Solution :-

The driving force for recrystallization is the difference in internal energy between the strained and unstrained material.
The driving force for grain growth is the reduction in grain boundary energy as the total grain boundary area decreases

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