Grain boundary ferrite,
Polygonal ferrite,
Ferrite with unaligned second phase has no second phase,
Ferrite with a second phase arrangement arranges the second phase,
Ferrite with a second phase, second phase ferrite,
The original austenite grain width is prior to the bulk crystal width.
Ferrite all-welded metal Ferrite is all-welded metal,
Charpy V-notch test is a V-groove test,
Vickers hardness,
Columnar crystallization zone