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2951 |
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Influence of mechanical alloying parameters on structure and properties of FeCr-TiCN powder containing nanocrystalline phases |
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Yuriy Borisov / Paton Welding Institute, Ukraine Alla Borisova / Paton Welding Institute, UKraine Lyudmila Adeeva/ Paton Welding Institute, Ukraine Aleksey Burlachenko/ Paton Welding Institute, Ukraine Alla Tunik/ Paton Welding Institute, Ukraine |
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FeCr-TiCN powder containing nanocrystalline phases was p;roduced by me- chanical alloying method. 80Fe+10Cr+10TiCN(wt.%) mixture was processed in ball mill.Effect of the drum rotation speed (200-960rpm), process duration(2-10 hours),the process medium(air,argon), presence of a special additive (zinc stearate) on structure,phase composition and microhardness of the process products were studied.It was shown that the synthesis of FeCr from Fe and Cr components is completed fully after 10 hours treatment in the ball mill under 960 rpm rotation speed.. The product consists of FeCr-matrix with ultradispersed inclusions of TiCN and has 950HV microhardness.FeCr- and TiCN-grains have 32nm and 7nm in size respectively. This powder is intended for using in thermal sprayingof wear-resistant coating. |