Synthesis of Al-Mg-WC composite coating by relativistic electron beam

The composite coating with a thickness of 5.2 & PLUSMN; 0.3 mm was obtained by non-vacuum electron-beam cladding of WC powder on an Al-6 % Mg alloy. A highly concentrated relativistic electron beam exposure to the alloying system leads to partial dissolution of tungsten carbide in the melt pool, causing interfacial interactions and new phases formation. The microstructure and phase composition of composite coating was studied using scanning electron microscopy, energy dispersive X-ray analysis and X-ray diffraction analysis. The microhardness of the composite coating is 1.3 times higher than substrate material and wear resistance is 1.13 times higher than Al-6 % Mg alloy.

Automated summary

A composite coating with a thickness of 5.2 ± 0.3 mm was obtained through non-vacuum electron-beam cladding of WC powder on an Al-6% Mg alloy. The exposure of a highly concentrated relativistic electron beam to the alloying system resulted in partial dissolution of tungsten carbide and the formation of new phases. The microstructure and phase composition of the composite coating were analyzed using scanning electron microscopy, energy dispersive X-ray analysis, and X-ray diffraction analysis. The microhardness of the coating was 1.3 times higher than the substrate material, and the wear resistance was 1.13 times higher than the Al-6% Mg alloy.