6. Metals and metal alloys
Numerous mechanisms have been associated with internal friction peaks in this type of material. These include:
atomic rearrangements induced by the application of a stress ;
dislocation relaxation ;
grain boundary movement ;
phase transformations, etc.
6.1 Internal friction due to point defects
A point fault is likely to produce internal friction if its presence locally induces a distortion with a symmetry lower than that of the network.
This is the case of Snoek relaxation
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