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Abstract <p>The effect of hydrostatic extrusion (with a true single-pass strain of <i>e</i> = 0.3–1.2) on the tensile mechanical properties of copper with an ultrafine-grained structure formed by equal-channel angular pressing is investigated. The results show that the optimal combination of the mechanical properties of UFG copper is achieved by hydrostatic extrusion in the strain range <i>e</i> = 0.6–0.9. Depending on the true strain, the ultimate tensile strength and the shear fracture stress of UFG copper can be increased by ≈10 and 40%, respectively. Fracture mechanisms are studied.</p>

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Effect of Hydrostatic Extrusion on the Mechanical Properties of Ultrafine-Grained Copper

  • 期刊论文

  • 发表日期：

    2026年1月1日

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  • A. N. Gangalo,
  • E. V. Yasharova,
  • L. F. Sennikova,
  • V. D. Surovitskii,
  • V. V. Burkhovetskii,
  • V. A. Glazunova

摘要

Abstract

The effect of hydrostatic extrusion (with a true single-pass strain of e = 0.3–1.2) on the tensile mechanical properties of copper with an ultrafine-grained structure formed by equal-channel angular pressing is investigated. The results show that the optimal combination of the mechanical properties of UFG copper is achieved by hydrostatic extrusion in the strain range e = 0.6–0.9. Depending on the true strain, the ultimate tensile strength and the shear fracture stress of UFG copper can be increased by ≈10 and 40%, respectively. Fracture mechanisms are studied.