Crystal ultra-fine grained

The maximum of microhardness of steel after EBP exceeds the maximum values of microhardness of steel, hardened after furnace heating and after EEA. Electron-microscopic studies have shown that this is due to the formation of ultra fine-grained (0.54 0.20 pm) stmeture on the surface of processing. The dimensions of martensite crystals in such grains change considerably within the following limits cross - 30...50 nm, longitudinal - 120... 500 nm. 

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