Abstract
The allowable deviation to preserve the “specialness” of a coincident site lattice (CSL) boundary was shown using a pure copper bicrystal which was designed to have gradually changed deviation around 〈110〉 axis from near-ideal Σ9{221} to a random relation. The grain boundary preserved immunity to grain boundary corrosion in Young’s dislocation etchant until the deviation reached the angle where the misfit dislocation spacing is supposed to decrease to CSL dimension. This underlies the common principle of the Brandon-type criteria of CSL.
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Takehara, Y., Fujiwara, H. & Miyamoto, H. Intergranular Corrosion of Σ9 Copper Bicrystal with Gradually Changed Misorientation in Young’s Dislocation Etchant. Metall Mater Trans A 44, 3685–3689 (2013). https://doi.org/10.1007/s11661-013-1748-1
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DOI: https://doi.org/10.1007/s11661-013-1748-1