{
  "abstract": "This study addresses the challenge of optimizing the trade-off between strength, ductility, and electrical conductivity in high-strength microcomposite Cu-14Fe alloy wires. A novel thermo-mechanical processing approach is proposed, combining successive cycles of twisting in an equal-channel step die with subsequent drawing along two temperature routes: cold (Route A, room temperature) and warm (Route B, 250 °C), followed by low-temperature annealing (300–500 °C). Results demonstrate that cold processing induces a sharp gradient microstructure (from submicron grains ~ 400 nm at the surface to 7 μm in the center), yielding maximum hardening. Conversely, warm deformation activates dynamic recovery, forming a uniform polygonized structure that preserves ductility. It was found that deformation processing along Route A ensures maximum workpiece hardening (ultimate strength σ в = 675 MPa), while warm deformation along Route B allows for the retention of an increased ductility resource δ = 19.0%, ψ = 25.0%. An anomalous change in mechanical properties was revealed during subsequent thermal treatment: annealing at 400 °C initiates a simultaneous increase in strength and ductility for both routes, achieving peak σ в values of 700 MPa (Route A) and 610 MPa (Route B). A key finding is an anomalous simultaneous increase in both strength and ductility during post-deformation annealing at 400 °C for both routes, driven by precipitation hardening from the decomposition of the supersaturated solid solution. Ultimately, preliminary warm deformation (Route B) proves technologically superior, establishing a thermally stable subgrain structure with enhanced resistance to softening and restrained recrystallization kinetics across the investigated temperature range.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": null,
  "author_total": 5,
  "authors": [
    {
      "name": "Irina Volokitina",
      "orcid": "0000-0002-2190-5672"
    },
    {
      "name": "Andrey Volokitin"
    },
    {
      "name": "Anastassiya Denissova"
    },
    {
      "name": "Zoya Gelmanova"
    },
    {
      "name": "Gulnara Ulyeva"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/3vnqr6t5cay0f.bib",
  "cited_by": 0,
  "doi": "10.1038/s41598-026-75188-7",
  "fulltext_url": "https://doi.org/10.1038/s41598-026-75188-7",
  "id": "3vnqr6t5cay0f",
  "issns": [
    "2045-2322"
  ],
  "landing_url": "https://www.nature.com/articles/s41598-026-75188-7",
  "language": "en",
  "licence": "CC-BY-4.0",
  "licence_label": "CC BY 4.0",
  "licence_source": "article",
  "licence_url": "https://creativecommons.org/licenses/by/4.0",
  "metadata_licence": null,
  "native_subjects": [
    [
      "lcc",
      "Q"
    ],
    [
      "lcc",
      "R"
    ],
    [
      "openalex",
      "2505|Microstructure and mechanical properties"
    ]
  ],
  "openalex": "W7221011598",
  "pdf_url": "https://www.nature.com/articles/s41598-026-75188-7.pdf",
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-08",
  "publisher": "Springer Science and Business Media LLC",
  "ris": "https://research.draconitic.com/paper/3vnqr6t5cay0f.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:17:24Z",
      "native_id": "10.1038/s41598-026-75188-7",
      "source": "crossref",
      "url": "https://www.nature.com/articles/s41598-026-75188-7"
    },
    {
      "first_seen": "2026-10-30T13:45:44Z",
      "native_id": "3feb67895a824f6885413b184dd5dc7e",
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      "url": "https://doi.org/10.1038/s41598-026-75188-7"
    }
  ],
  "subjects": [
    {
      "field": "chemistry",
      "origin": "openalex:2505|Microstructure and mechanical properties",
      "subfield": "materials-polymers"
    }
  ],
  "title": "Development of gradient structured copper wire deformation and heat treatment technology for cable industry",
  "title_text": "Development of gradient structured copper wire deformation and heat treatment technology for cable industry",
  "type": "peer-reviewed",
  "updated_at": "2026-10-30T13:45:44Z",
  "url": "https://research.draconitic.com/paper/3vnqr6t5cay0f",
  "venue": "Scientific Reports",
  "versions": []
}