Effects of Nitrogen on Properties of Low Carbon High Chromium Cast Iron
The effects of nitrogen on the properties of low carbon high chromium cast iron were studied by mechanical property and wear resistance test,and metallograph analysis using OM and ESEM.The experiments showed that the addition of nitrogen into the cast iron slows the directive growth of the eutectic carbide during crystallization,which makes them more nodular-like,increases the amount of secondary carbides and changes their size and shape.Also,the addition of nitrogen increases the hardness and decreases the impact toughness,increases the sliding and rolling wear resistance.