Conferences

Tungsten-Free Hardmetals and Carbide Steels with Chromium Carbides

 

I. M. Frantsevich Institute for Problems of Materials Science of the NAS of Ukraine, Krzhizhanovsky str., 3, Kyiv, 03142, Ukraine
Powder Metallurgy - Kiev: Frantsevich Institute for Problems of Materials Science NASU, 2014, #03/04
http://www.materials.kiev.ua/article/1203

Abstract

The paper outlines Radomyselskii's scientific contribution to the development of powder wear-resistant materials, corrosion-resistant tungsten-free hardmetals, and carbide steels. It is shown how the principle of structural heterogeneity proposed by I.D.Radomyselskii was implemented in the development of wear-resistant iron–white cast iron–chromium steel material, chromium carbide Cr3C2–Ni, Cr3C2–Ni–P, Cr3C2–Fe, and Cr3C2–stainless steel hardmetals. It is demonstrated that iron and steel powders, as well as high-carbon ferrochromium FKh800 powder, can be used successfully as starting materials to produce chromium carbide alloys and carbide steels, given increasing scarcity and cost of chromium and nickel. Data on the microstructure, mechanical and tribological properties, corrosion characteristics, and abrasive resistance are provided. The results of industrial tests and examples of the most effective use of tungsten-free hardmetals and powder wear-resistant materials containing simple and complex chromium carbides are presented.


CARBURIZED STEEL, CHROMIUM CARBIDE, CORROSIVE RESISTANCE, FERROCHROME, HARD ALLOY, HETEROGENEITY, MICROSTRUCTURE, VERTICAL SECTION, WEAR RESISTANCE