Abstract
Based on the result of instrumental indentation, the micromechanical properties of a monolithic SHS-composite of the Fe-Ni-C-B system are determined. The matrix of the composite is austenite, the hardening phases are TiC, TiB2, the particles of which are randomly placed in the matrix. Regions of the eutectic structure “γ-Fe + Fe2B” were found in the matrix. They are the most plastic and are characterized by the maximum values of hmax, φ, CIT. The maximum values of strength indices (E*, Re, HIT/E*, HIT3/E*2) are typical for the regions “γ-Fe + TiC” and “γ-Fe + TiB2 + TiC”. Composite specimens after bending tests fractured ductilely with a high fracture work. The axes of the Fe2B dendrites in the “γ-Fe + Fe2B” eutectic are deformed in the process of testing up to the destruction of the samples.
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