Diffusion-dispersion method of hardening the surface of austenitic steel
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, Vol. 33, Issue 11-12; Other Information: PBD: May 1992; TN: Translated from Metallovedenie i Termicheskaya Obrabotka Metallov; No. 11, 2-4(Nov 1991)
- Country of Publication:
- United States
- Language:
- English
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