Stress crack in a nitrided component - 1.8507
Treatment : quenched and tempered
- nitrided
Magnification : 50 : 1
Etching medium : 3 % alcoholic nitric acid
Sampling / Specification : transverse
Testing result :
stress crack arisen at the quenching
the flanks of the crack became nitrided also
the defect was already existing before the nitriding
Treatment : quenched and tempered - nitrided
Magnification : 1000 : 1
Etching medium : 3 % alcoholic nitric acid
Sampling / Specification : transverse
Testing result :
basic structure
ferrite free heat treated microstructure