| Abstract: | Microstructure and Toughness of Nitrided Layers The redistribution of carbon during the nitriding of chromium alloyed steels leads to a cementite precipitation at prior austenitic grain boundaries more ore less parallel to the surface. The intensitiy of the precipitates dependence on the thickness and phase structure of the coumpound layer. The notch- and indentation fracture thoughness allowables a differentiate evaluation of the toughness of nitrided layers. The toughness of the precipitation layer dependence on its hardness, the microstructure prior the nitriding and the intensity of the cementite precipitates at grain boundaries. |
