Surface decarburization 1.3505 spheroidised
Treatment : spheroidised
Magnification : 500 : 1
Etching medium : 3 % alcoholic nitric acid
Sampling / Specification : transverse
Testing result :
surface decarburization 0,20 mm deep
zone with lamellar pearlite 0,14 mm deep
zone with carbide depletion 0,07 mm deep
This form of surface decarburization most frequently appears at spheroidised hypereutectoid steels. Often, the area with lamellar pearlite is available, however alone, too. It is rarer to notice a decarburization where only a carbide impoverished area is existing.
