X-Ray Phase Analysis Of Nitrided Layers Of X2CrNiMo17-12-2 Austenitic Steel

Abstract

This work presents the results of diffraction analyses carried out using X-ray phase analyses (XRD and GIXRD) of nitrided layers of X2CrNiMo17-12-2 austenitic steel. Plasma nitriding process was c arried out in the temperature range of 325 ÷ 400 °C and time of 2 ÷ 4 h. Hydrogen-nitrogen plasma was used as reactive atmosphere (H2 75% + N2 25%) with pressure of 150 Pa. On the basis of the X-ray analyses it was stated that the obtained nitrided layers consisted of a subsurface layer of chromium nitrides and a zone of nitrogen saturated austenite.

Understanding the effect of irradiation temperature on microstructural evolution of 20MnMoNi55 steel

“…Penetration depth ( x α ) of X-ray for grazing angle α in GIXRD mode can be estimated using Eq. ( 1 ) as follows 17 , 18 . where G is the fraction of the incident beam absorbed till a depth of x α, μ is the linear attenuation coefficient of the material and 2θ is the diffraction angle.…”