Recrystallization Theoretical & Practical Aspects - Materials Science ...

Intro
Recrystallization
Lab 1
Grain
Boundaries
Source of stored energy
• Martin, Doherty & Cantor distinguish between
microstructural changes driven by chemical energy
and change driven by strain energy.
• Recrystallization is a process of microstructural
change driven by strain energy.
• We will examine the details of plastic deformation
later in the course. For now, it is sufficient to know
that plastic deformation requires a high level of
dislocation activity on at least 5 slip systems in each
grain. Dislocations intersect and multiply leaving
behind a highly irregular structure. This storage of
dislocation line length is the direct cause of work
hardening and is the strain energy that drives
recrystallization.
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