Thanks dbooker630 and TVP,
I understand this is not a easy issue. I have found other reference about it in Gear technology, May/June 2003: "characterization of retained austenite in carburized geras and its influence on fatigue performance".
I'm really grateful for your help. I think this forum...
Maybe is not a fine definition but ceramic covers covers such compounds made from cristaline structures, with ionic and/or covalent bonding. Some of them are intermetallic and others pure ceramics. Depending of chemical bonding physical/chemical characteristics are obatined (hardens, toughness...
There are some literature about retained austenite role on pitting resistance. As I know it works increasing superficial compresive stresses due to its transformation into martensite induced by contact stress.
ISO 6336-5 allows up to 25%, but such levels lower hardness.
Anybody has a recomended...