Structural sensitivity of strengthening and ductility indices in carbon steel
https://doi.org/10.21122/1683-6065-2025-1-81-84
Abstract
This study analyzes the dependence of well-known indicators of strain hardening and ductility on ferrite grain size in low-carbon steel and on interlamellar spacing in pearlitic steel under tensile deformation. Indicators of the degree of relative strength increase allow for control over strain hardening in both uniform and localized tensile regions and exhibit enhanced structural sensitivity at all stages of tension, compared to the strain hardening rate and strain hardening exponent. Relative narrowing and the true strain indicator show less structural dependence on ductility compared to the degree of relative cross-sectional area reduction. Monitoring the degree of relative strength increase, the degree of relative cross-sectional area reduction, and the inverse length of the yield plateau during tensile testing provides a preliminary assessment of drawability for carbon steel wire rod.
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Review
For citations:
Fetisov V.P. Structural sensitivity of strengthening and ductility indices in carbon steel. Litiyo i Metallurgiya (FOUNDRY PRODUCTION AND METALLURGY). 2025;(1):81-84. (In Russ.) https://doi.org/10.21122/1683-6065-2025-1-81-84
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