As we know, due to the tendency to decrease the overall Gibbs free energy, grain boundaries in crystalline materials are subjected to thermal-induced migration, either through a diffusive flux of atoms across the boundary or by the displacement of the crystallite surface, during annealing or sintering.
My question is, have anyone observed the migration of twin boundary, a special kind of grain boundary, during annealing?
Bo Mao I am not an expert in this area, but still will try....
In the growth accident model, the grain boundary migration distance and the grain boundary migration velocity are two key factors promoting the generation of annealing twins. a correlation exist between recrystallization front migration rate and the rate of creation of annealing twin length.
please read
https://core.ac.uk/download/pdf/51223955.pdf
http://mimp.materials.cmu.edu/rohrer/papers/2015_07.pdf
http://mimp.materials.cmu.edu/rohrer/theses/150730_BrianLin_thesis.pdf
I have read a paper you might be interested in. The title of the paper is "Influence of deformation twinning on static annealing of AZ31 Mg alloy". The auther have done many similar experiments, you can retrieve it.
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