Academic Journal of Engineering and Technology Science, 2025, 8(5); doi: 10.25236/AJETS.2025.080508.
Rongfeng Yu1,2, Lingling Li2, Desheng Li3
1Inner Mongolia New Envision Group Co., Ltd., Hohhot, Inner Mongolia, China
2College of Intelligent Manufacturing, Putian University, Putian, Fujian, China
3Tongfang Electronic Technology Co., Ltd., Jiujiang, Jiangxi, China
This study systematically investigates the effects of cold-rolling deformation (30%, 60%, 90%) and aging treatment (450 °C/1 h) on the microstructural evolution and strength–conductivity performance of a Cu-1.0Cr-0.1Zr alloy. The results show that 90% cold deformation combined with aging treatment yields the best comprehensive properties, with a tensile strength of 411.7 MPa and an electrical conductivity of 63.7% IACS. Microstructural analysis reveals that nanoscale Cr/Zr-enriched phases precipitate dispersively during aging, significantly strengthening the matrix; meanwhile, solute atoms are desoluted from the Cu matrix, greatly reducing electron scattering and effectively improving conductivity. This strengthening mechanism fully demonstrates the synergistic effects of precipitation strengthening and solid-solution purification, providing theoretical support for the design of high-strength and high-conductivity copper alloys.
Cu-Cr-Zr alloy; rolling; aging; microstructure; mechanical properties
Rongfeng Yu, Lingling Li, Desheng Li. Effects of Rolling Processes and Aging Treatment on the Properties and Microstructure of Cu-Cr-Zr Alloys. Academic Journal of Engineering and Technology Science (2025), Vol. 8, Issue 5: 59-63. https://doi.org/10.25236/AJETS.2025.080508.
[1] Liu Jinsong, Tang Xujing, Wang Songwei, et al. Effect of La microalloying and warm-rolling on the microstructure and properties of Cu-Cr-Zr alloys [J]. Rare Metal Materials and Engineering, 2025, 54(8): 2125–2135.
[2] Hua Siming. Effect of solution temperature on the microstructure and properties of Cu-Cr-Zr alloys [J]. Metal Heat Treatment, 2025, 50(6): 139–144.
[3] Xiang Chaojian, Lou Huafen, Zhang Xi, et al. Microstructure and properties of continuously cast–extruded Cu-Cr-Zr alloys [J]. The Chinese Journal of Nonferrous Metals, 2023, 33(6): 1821–1830.
[4] Liu Dezhi, Liu Jingang, Zhao Xingchuan, et al. Effect of directional solidification rate on the microstructure and mechanical properties of Cu-Cr-Zr alloys [J]. Special Casting and Nonferrous Alloys, 2023, 43(1): 62–67.
[5] Zhang Chenggong, Qiao Zhenxing, Shi Zhiming, et al. Effect of Yttrium on the microstructure and properties of high-strength, high-conductivity Cu-Cr-Zr alloys [J]. Journal of Chinese Rare Earths, 2024, 42(2): 294–303.
[6] Kurita Hiroki, Diguet Gildas, Froemel Joerg, Narita Fumio.Stress sensor performance of sputtered Fe-Si-B alloy thin coating under tensile and bending loads[J].Sensors and Actuators: A. Physical,2022,343-335.
[7] Song Wei, Wang Hai, Li Yi, Zhang Shuyuan, Ren Ling, Yang Ke. Ultrafine grained metastable Ti6Al4V5Cu alloy with high strength and excellent low-cycle fatigue property[J]. Journal of Materials Science and Technology,2022,240-250.
[8] Trejgis K., Ledwa K., Bednarkiewicz A., Marciniak L. Corrigendum to “Impact of host composition and dopant ion concentration on the thermometric properties of a Eu3+ activated fluoride-based single-band ratiometric luminescent thermometer”[J].Journal of Alloys and Compounds,2022,914-917.
[9] Daramola Ayobami, Fraczkiewicz Anna, Bonny Giovanni, Nomoto Akiyoshi, Adjanor Gilles, Domain Christophe, Monnet Ghiath. Atomistic investigation of elementary dislocation properties influencing mechanical behaviour of Cr15Fe46Mn17Ni22 alloy and Cr20Fe70Ni10 alloy[J].Computational Materials Science,2022,211-213.
[10] Kashkarov E.B., Sidelev D.V., Pushilina N.S., Yang J.,Tang C., Steinbrueck M. Influence of coating parameters on oxidation behavior of Cr-coated zirconium alloy for accident tolerant fuel claddings[J]. Corrosion Science,2022,20-24.
[11] A. A. Malikov, A. V. Sidorkin, V. D. Artamonov, Yu. V. Kovalev. Modeling the Efficiency of Precision Control and the Dimensional Tool Wear Index in the Shaving-Rolling Process[J].Russian Engineering Research, 2025,45(8):1139-1145.