Abstract
Regularities of plastic flow and fracture of high-nitrogen chromium-manganese steel, produced by conventional casting and electron beam additive manufacturing, were analyzed. Specimens of additively manufactured steel under tensile deformation fractured in brittle manner and has lower strain-hardening coefficient and elongation to failure in comparison with cast steel without differences in yield strength value. Microstructural analysis showed that these features of deformation and fracture of additively manufactured high-nitrogen steel are associated with its structural inhomogeneity, which promotes the heterogeneous stress distribution in the bulk of material.
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