Accession Number : AD0744151

Title :   Formation of Nitrous Austenite during Diffusion Saturation of Steel KhA,

Corporate Author : FOREIGN TECHNOLOGY DIV WRIGHT-PATTERSON AFB OHIO

Personal Author(s) : Belotskii,A. V. ; Permyakov,V. G. ; Samsonyuk,I. M.

Report Date : 21 MAR 1972

Pagination or Media Count : 9

Abstract : Nitride austenite produced during nitriding of 38KhA steel is heterogeneous in composition. In the nitriding temperature interval studied (750-1050 degrees C), there are two isostructural solid solutions, one of which is a solid solution of carbon, the other being a solid solution of nitrogen in the face-sintered cubic lattice of the matrix. The maximum saturation of austenite by nitrogen is achieved at 900 degrees C. A homogeneous nitride-carbide austenite is formed in the nitriding modes used only in the 1000-1050 degree C interval. The coefficient of diffusion of nitrogen in the austenite of type 38KhA steel was approximately determined. (Author)

Descriptors :   (*CASE HARDENING, *STEEL), AUSTENITE, SOLID SOLUTIONS, NITRIDES, USSR

Subject Categories : Fabrication Metallurgy

Distribution Statement : APPROVED FOR PUBLIC RELEASE