Recrystallization Theoretical & Practical Aspects - Materials Science ...

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Intro <strong>Recrystallization</strong> Lab 1 Grain Boundaries Crystal orientations at a g.b. g D TJ ABC g B g Bg A -1 g A TJ ACB g C 26
Intro <strong>Recrystallization</strong> Lab 1 Grain Boundaries Grain Boundary Structure • High angle boundaries: can be thought of as two crystallographic planes joined together (with or w/o a twist of the lattices). • Low angle boundaries are arrays (walls) of dislocations: this is particularly simple to understand for pure tilt boundaries [to be explained]. • Grain boundary energy increases monotonically with misorientation as a consequence of increasing dislocation density. • Transition: in the range 10-15°, the dislocation structure changes to a high angle boundary structure. • The grain boundary mobility increases abruptly at this transition in structure. 27
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Page 9 and 10: Grain size as a function of prior d
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Recrystallization Theoretical & Practical Aspects - Materials Science ...

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