Conditions for the formation of a martensitic single-phase compound layer in ion-nitrided 316L austenitic stainless steel

Low-temperature plasma nitriding of sintered PIM 316L austenitic stainless steel

“…Confronting the top and bottom hardness values for samples nitrided at 350, 380, 410 and 440ºC, the treatment leads to a hardness increment of 5.3, 6.1, 7.7, and 8.1 times, respectively. These values are consistent with reported measurements in other works 27,28 , keeping in mind that Borgioli et al 25 indicate hardness values for sintered AISI 316L stainless steel 2.5 times lower than the wrought one. Figure 4 presents the hardness measurement values performed on the sample top (exposed to plasma) and bottom (non-exposed to plasma) surfaces treated at different nitriding times.…”

Effect of cooling rate on properties of plasma nitrided AISI 1010 steel

“…The nitrided samples will different properties depending on the definition of the nominal process temperature and can be very different from those expected. For example, works of Marchev et al [13,14]; Li [15] and Sun et al [16] disagree as concerning to the relation between surface composition in nitrided austenitic AISI 316 steel and treatment temperature. In this way it is very difficult to compare results from one work to another.…”

25 years of S-phase

“…Marchev et al 4 used a completely new designation for the S-phase, namely 'm phase'. The reason for this was that they felt that the term 'S-phase' had become too closely attached in the literature to the incorrect fcc description.…”