TEM Investigation of the As-Quenched Compound Layer Formed by Austenitic Nitrocarburizing

The as-quenched compound layer of a 0.2% C steel formed by austenitic nitrocarburizing is found to be composed of single-phase ϵ-nitrocarbide with an hexagonal structure, as determined by electron diffraction. The difference in the site occupancy of nitrogen or carbon atoms may result in the formati...

Full description

Saved in:
Bibliographic Details
Published in:Materials characterization 1998-07, Vol.41 (1), p.35-39
Main Authors: Rong, Yonghua, Wang, Yongrui, Chen, Xingkang, Hu, Gengxiang
Format: Article
Language:English
Subjects:
Applied sciences
Exact sciences and technology
Heat treatment
Metals. Metallurgy
Production techniques
Thermochemical treatment and diffusion treatment
Citations: Items that this one cites
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The as-quenched compound layer of a 0.2% C steel formed by austenitic nitrocarburizing is found to be composed of single-phase ϵ-nitrocarbide with an hexagonal structure, as determined by electron diffraction. The difference in the site occupancy of nitrogen or carbon atoms may result in the formation of various types of ϵ-nitrocarbide; that is, ϵ-Fe 2(N,C), ϵ-Fe 2•3(N,C), and ϵ-Fe 3(N,C). By a comparison of the intensities of the superlattice reflection spots observed in the electron diffraction patterns with those in computed simulation patterns, the phase in the compound layer of the as-quenched sample was identified as ϵ-Fe 2•3(N, C).
ISSN:1044-5803
1873-4189
DOI:10.1016/S1044-5803(98)00021-7