The paper investigates the macrolocalization of plastic strain due to uniaxial loading of low carbon/austenitic stainless steel produced by electron-beam additive manufacturing followed by annealing at different temperatures. The stress-strain curve of the bimetallic composite is described by the parabolic law. Due to annealing in the range of 350 to 650°C, the yield strength reduces, while strain-to-failure grows as compared to the as-built composite. Localized plastic strain follows the stress-strain curve in all composite states and layers. At the parabolic hardening stage, the formation of a stationary dissipative system of localized plasticity occurs at strain hardening of 0.5. When strain hardening is ≤0.5, a high-amplitude deformation zone appears in the transition layer, which coincides with the site of eventual fracture.
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Orlova, D.V., Shlyakhova, G.V., Danilova, L.V. et al. Influence of Bimetal Structure and Phase Composition on Localized Plastic Strain. Russ Phys J 67, 434–440 (2024). https://doi.org/10.1007/s11182-024-03141-0
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DOI: https://doi.org/10.1007/s11182-024-03141-0