ASSESSMENT OF THE EFFECTIVENESS OF 316L AUSTENITIC STEEL UNCONVENTIONAL GLOW DISCHARGE NITRIDING

摘要

The 316L grade austenitic steel after glow discharge nitriding at a temperature of T= 733 K for a duration of tau = 61,2 ks and four different variants of specimen arrangement in the glow-discharge chamber was investigated. In order to assess the effectiveness of nitriding process variants, the profile analysis examination of obtained surface layers, surface hardness tests and surface layer hardness profile examination, the analysis of surface layer structures and abrasive wear were performed. It has been found that an application of the booster screens causes depth increase of the nitrogen diffusioji into the nitrided 316L austenitic steel and thus an increase of the obtained surface layers thickness.