MANUFACTURING PROCESS AND PROSPECTIVE RESEARCH DIRECTIONS

FOR THE IMPLEMENTATION OF LIGHTWEIGHT Fe-Mn-Al-C STEELS

Veis V. I., PhD (Engin.), Researcher, https://orcid.org/0000-0001-8889-2303,This email address is being protected from spambots. You need JavaScript enabled to view it.

Likhatskyi R. F., PhD (Engin.), Researcher, https://orcid.org/0000-0001-8277-5122

Likhatskyi I. F., PhD Student, https://orcid.org/0000-0002-2069-5255

Semenko A. Yu., PhD (Engin.), Senior Research Scientists, Senior Researcher, https://orcid.org/0000-0002-0448-1636

Physico-technological Institute of Metals and Alloys of the NAS of Ukraine, Kyiv

 https://doi.org/10.15407/conf_mmpp2025.008

 The work reviews the technological features, challenges, and perspectives of producing Fe-Mn-Al-C lightweight steels. Various melting and casting methods, including open induction and vacuum induction furnaces, are discussed, with particular attention to the influence of refractory linings, melt reactivity, and phosphorus sensitivity. The role of alloying elements such as aluminium, silicon, and molybdenum in shaping phase transformations, microstructural stability, and mechanical properties is analyzed. The impact of thermomechanical processing, including hot and cold rolling, annealing, and aging, on κ-carbide precipitation and δ-ferrite morphology is highlighted. Recent progress in additive manufacturing, particularly laser powder bed fusion, demonstrates the alloy’s potential for complex lightweight components with high strength and ductility. Despite significant achievements, industrial applications remain limited due to unresolved issues in casting technology, surface defects, and deformation mechanisms. The study emphasizes the need for further optimization of processing parameters and comprehensive evaluation of mechanical performance for large-scale implementation.

Keywords: Fe-Mn-Al-C steel, lightweight steels, mechanical properties, thermomechanical processing, microstructure.

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