Effect of Recrystallization Annealing and Aging Treatment on Microstructure and Properties of High Strain Rolled Cu-Cr-Zr Alloy

Authors

  • Yan Peng Changchun University of Technology, School of Materials Science and Engineering, Changchun 130012, PR China https://orcid.org/0009-0001-4884-9076
  • Qiao Yihui Changchun University of Technology, School of Materials Science and Engineering, Changchun 130012, PR China
  • Zu Guoqing Changchun University of Technology, School of Materials Science and Engineering, Changchun 130012, PR China https://orcid.org/0000-0002-9862-7754
  • Zhao Yu Changchun University of Technology, School of Materials Science and Engineering, Changchun 130012, PR China
  • Liu Fengjian Unique Rail Transit Technology Co., LTD, Changchun 130012, PR China
  • Ye Fan Jilin Shengda Cable Co. LTD, Changchun 130012, PR China
  • Zou Haohao Changchun University of Technology, Ministry of Education, Key Laboratory of Advanced Structural Materials, Changchun 130012, PR China
  • Ran Xu Changchun University of Technology, School of Materials Science and Engineering, Changchun 130012, PR China

DOI:

https://doi.org/10.24425/amm.2025.154494

Abstract

To obtain high strength and high electrical conductivity, precipitation-strengthened Cu-Cr-Zr alloys are treated by heat treatment and mechanical treatment. The effects of rolling temperature, recrystallization, and aging treatment on the microstructure evolution, mechanical properties, and electrical conductivity of Cu-Cr-Zr alloy were investigated in detail. The results indicated that the optimal comprehensive performance of tensile strength (595.9 MPa), percentage elongation (14.35%), hardness 202.60 HV, and electric conductivity (77.1% IACS) was obtained by cold rolling and aging at 450℃ for 1 hour. It was found that the precipitates inhibit the formation of recrystallized grains. The improvement of tensile strength, hardness, and conductivity of the Cu-Cr-Zr alloy is mainly attributed to aging strengthening, and the advancement of elongation is primarily attributed to recrystallization. Mechanical properties and electrical conductivity of the alloy after aging treatment are improved, indicating that proper aging treatment is helpful in obtaining better properties of Cu-Cr-Zr alloy.

Published

2025-09-30

How to Cite

Peng, Yan, et al. “Effect of Recrystallization Annealing and Aging Treatment on Microstructure and Properties of High Strain Rolled Cu-Cr-Zr Alloy”. Archives of Metallurgy and Materials, vol. 70, no. 3, Sept. 2025, doi:10.24425/amm.2025.154494.

Issue

Vol. 70 No. 3 (2025)

Section

Articles