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<p>Cu-1Cr-0.1Zr alloy has attracted widespread attention due to its potential application in nuclear materials, microelectronics, transportation, and aerospace manufacturing fields. It is crucial to balance the strength and electrical conductivity of Cu-1Cr-0.1Zr alloy. In this study, we utilized a combination of equal channel angular pressing (ECAP) along with aging treatment (AT) and cryogenic rolling (CR) to achieve a high electrical conductivity and high strength Cu-1Cr-0.1Zr alloy with a tensile strength of 704&#xa0;MPa, microhardness of 197 HV, elongation to failure of 7.8%, and electrical conductivity of 76% IACS. Grain refinement, precipitation strengthening, and dislocation strengthening are mainly involved in the outstanding mechanical and electrical properties. In conclusion, a new approach to the preparation of Cu-Cr-Zr alloys with high electrical conductivity and high strength is provided by the ECAP + AT + CR processing.</p>

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Achieving High Strength and High Electrical Conductivity of Cu-1Cr-0.1Zr Alloy via Multi-Stage Deformation and Aging

  • 期刊论文

  • 发表日期：

    2025年11月23日

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  • Cong Hao Liu,
  • Zhu Qi Chu,
  • Wei Wei,
  • Kun Xia Wei,
  • Igor V. Alexandrov,
  • Xu Long An,
  • Dan Dan Wang,
  • Xiang Kui Liu

摘要

Cu-1Cr-0.1Zr alloy has attracted widespread attention due to its potential application in nuclear materials, microelectronics, transportation, and aerospace manufacturing fields. It is crucial to balance the strength and electrical conductivity of Cu-1Cr-0.1Zr alloy. In this study, we utilized a combination of equal channel angular pressing (ECAP) along with aging treatment (AT) and cryogenic rolling (CR) to achieve a high electrical conductivity and high strength Cu-1Cr-0.1Zr alloy with a tensile strength of 704 MPa, microhardness of 197 HV, elongation to failure of 7.8%, and electrical conductivity of 76% IACS. Grain refinement, precipitation strengthening, and dislocation strengthening are mainly involved in the outstanding mechanical and electrical properties. In conclusion, a new approach to the preparation of Cu-Cr-Zr alloys with high electrical conductivity and high strength is provided by the ECAP + AT + CR processing.