Grain Boundary Allotriomorphic Ferrite and Polygonal Ferrite

Bodnar and Hansen (writing in 1994) note that Polygonal ferrite can occur as grain boundary allotriomophs and intragranular idiomorphs. They then demonstrated the similarity between grain boundary allotriomorph and polygonal ferrite  by showing the same grain boundary area at two different magnifications with different labels. In the combined image you can see that the arrow is pointing at very similar position in two figures.

Grain Boundary Allotriomorph in Figure 1 A

 

 

 

 

Polygonal Ferrite in Figure 1 B

 

Posiiton of Figure A in Figure B

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