Abstract
In this paper, we studied the phase and elemental composition of the surface layer of die steel 5KhNM subjected to electro-explosive sputtering deposited composite TiC–Ni–Mo coating and subsequent pulsed irradiation with a high-intensity submillisecond electron beam. The modes of electron-beam processing providing the formation of a dense, with a mirror gloss, surface layer with a submicrocrystalline structure based on titanium carbide and intermetallic compounds based on Mo, Ni, and Ti are determined. The electron-beam processing of an electro-explosive coating in the melting mode is shown to lead to the formation of a structurally uniform and concentration-uniform surface layer. TiC–Ni–Mo coatings have a 1.26 times higher wear resistance compared to die steel 5KhNM used as a substrate. The microhardness of the formed coatings is 450–2400 HV, the nanohardness is 25.5 GPa, and the modulus of elasticity is E = 398 GPa.
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FUNDING
This work was supported by the Russian Foundation for Basic Research, project no. 16-32-60032 mol_a_dk, and by the Grant of the President of the Russian Federation, project no. MK-1118.2017.2.
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The authors declare that they have no conflict of interest.
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Romanov, D.A., Kuziv, E.M., Bataev, V.A. et al. Structure and Properties of Electro-Explosive TiC–Ni–Mo Coatings of Die Steel after Electron-Beam Treatment. Inorg. Mater. Appl. Res. 10, 606–615 (2019). https://doi.org/10.1134/S2075113319030365
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DOI: https://doi.org/10.1134/S2075113319030365