E. A. Drobyaz, E. G. Bushueva, I. K. Chakin, V. G. Burov, V. A. Bataev
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引用次数: 0
Abstract
The structure and properties of chromium-nickel austenitic steel with surface layer modified with silicon during surfacing of powder silicon carbide by a beam of relativistic electrons released into air atmosphere are studied. It is shown that the process of electron beam heating yields a structure consisting a silicon-alloyed austenitic matrix, complex chromium carbides (Cr, Fe)7C3 with a chiefly dendritic structure, and silicon carbides Si5C3 in the surface layers up to 2800 μm thick. The solid solution strengthening and the presence of the carbides promote increase in the microhardness of the modified steel layer to 10 GPa, which is four times higher than the hardness of the base metal. The heat resistance of the austenitic steel with the modified layer is twice higher than that of the base metal at 850°C.
期刊介绍：
Metal Science and Heat Treatment presents new fundamental and practical research in physical metallurgy, heat treatment equipment, and surface engineering.
Topics covered include:
New structural, high temperature, tool and precision steels;
Cold-resistant, corrosion-resistant and radiation-resistant steels;
Steels with rapid decline of induced properties;
Alloys with shape memory effect;
Bulk-amorphyzable metal alloys;
Microcrystalline alloys;
Nano materials and foam materials for medical use.
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