Diffusion-dispersion method of hardening the surface of austenitic steel

Journal Article · Fri May 01 04:00:00 EDT 1992 · Metal Science and Heat Treatment

OSTI ID:146910

Belyakova, V I; Vereshchagina, A A; Banas, I P

The basic procedure of enhancing wear resistance is so-called surface hardening - more accurately, the increase in surface hardness due to diffusion processes (carburizing, nitriding, etc.). Nitriding is used to harden austenitic corrosion-resistant (and, consequently, high-chromium) steels, although the latter submit to nitriding with difficulty. The thickness of the hardened layer does not exceed 0.1-0.2 mm. Instead of pure nitriding, which is universally adopted for these steels (at a temperature in the 500-700{degrees}C interval), we used carburizing and carbon nitriding at higher temperatures as compared with conventional nitriding (950-1050{degrees}C) in this study. High-strength layers were obtained with a thickness to 1 mm; subsequent heat treatment made it possible to elevate the hardness to 700 HV. The treatment regime that we propose for corrosion-resistant steels should be used to extend the longevity of components. 3 figs., 1 tab.

• OSTI ID: 146910
• Journal Information: Metal Science and Heat Treatment, Journal Name: Metal Science and Heat Treatment Journal Issue: 11-12 Vol. 33; ISSN MHTRAN; ISSN 0026-0673
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
AUSTENITIC STEELS
CHROMIUM STEELS
CORROSION
DIFFUSION
FRICTION
MICROSTRUCTURE
SURFACE HARDENING
WEAR RESISTANCE