|
Treatment : untreated
Magnification : 200 : 1
Etching medium : 3 % alcoholic nitric acid
Sampling / Specification : transverse
Testing result :
fine-grained , martensitic microstructure
with retained austenite
polyhedron structure |
Treatment : untreated
Magnification : 500 : 1
Etching medium : 3 % alcoholic nitric acid
Sampling / Specification : transverse
Testing result :
fine-grained , martensitic microstructure
with retained austenite
polyhedron structure |