变形和时效处理对Cu-Ni-Be合金组织与性能的影响

doi:10.13251/j.issn.0254-6051.2026.02.042

金属热处理 ›› 2026, Vol. 51 ›› Issue (2): 286-291.DOI: 10.13251/j.issn.0254-6051.2026.02.042

变形和时效处理对Cu-Ni-Be合金组织与性能的影响

崔书辉^1,2, 万庆峰¹, 张保华¹, 郑学清¹, 丁向东²

1.宁夏中色新材料有限公司, 宁夏石嘴山 753000;
2.西安交通大学材料科学与工程学院, 陕西西安 710049

收稿日期:2025-09-05 修回日期:2025-12-17 发布日期:2026-03-05
通讯作者: 张保华,高级工程师,E-mail:315372771@qq.com
作者简介:崔书辉(1985—),男,工程师,主要研究方向为铍铜合金工艺技术,E-mail:371714134@qq.com。
基金资助:
宁夏自然科学基金(2024AAC03842)

Effects of deformation and aging treatment on microstructure and properties of Cu-Ni-Be alloy

Cui Shuhui^1,2, Wan Qingfeng¹, Zhang Baohua¹, Zheng Xueqing¹,Ding Xiangdong²

1. Ningxia Zhongse New Materials Co., Ltd., Shizuishan Ningxia 753000, China;
2. School of Materials Science and Engineering, Xi'an Jiaotong University, Xi'an Shaanxi 710049, China

Received:2025-09-05 Revised:2025-12-17 Published:2026-03-05

摘要/Abstract

摘要： 针对固溶态Cu-1.85Ni-0.35Be合金,通过X射线衍射、显微组织观察、力学性能测试和导电率表征,研究了冷轧变形量(0%~60%)及450 ℃×4 h时效工艺对其组织与性能的影响。结果发现,Cu-1.85Ni-0.35Be合金的时效强化相为NiBe相,时效后硬度和导电率显著上升。变形量≥50%时,晶界处不连续析出相粗化,导致性能劣化。在试验条件下,固溶后的Cu-1.85Ni-0.35Be合金经过40%的变形和450 ℃×4 h时效处理后的综合性能最佳,硬度、抗拉强度和断后伸长率分别达到257 HV0.5、826.37MPa和13.86%,导电率达到60.67%IACS。Cu-1.85Ni-0.35Be合金控制变形量在30%~40%之间并匹配合适的时效工艺,可突破高导电铍铜合金性能瓶颈,为国产替代提供理论支撑。

关键词: Cu-Ni-Be合金, 变形, 时效, 力学性能, 导电率

Abstract: Effects of cold rolling deformation (0%-60%) and aging process at 450 ℃ for 4 h on the microstructure and properties of solution treated Cu-1.85Ni-0.35Be alloy were investigated by means of X-ray diffraction, microstructure observation, mechanical property testing, and electrical conductivity characterization. The results show that the age-hardening phase of the Cu-1.85Ni-0.35Be alloy is the NiBe phase, and the hardness and electrical conductivity increase significantly after aging. When the deformation amount is not less than 50%, the discontinuous precipitated phases at the grain boundaries coarsen, resulting in property deterioration. Under the experimental conditions, the solution-treated Cu-1.85Ni-0.35Be alloy achieves the optimal comprehensive properties after 40% deformation followed by aging at 450 ℃ for 4 h, with the hardness, tensile strength, and elongation after fracture reaching 257 HV0.5, 826.37 MPa and 13.86%, respectively, and the electrical conductivity attaining 60.67%IACS. Controlling the deformation amount of the Cu-1.85Ni-0.35Be alloy within the range of 30%-40% and matching it with a suitable aging process can break through the performance bottleneck of high-conductivity beryllium copper alloys, providing theoretical support for domestic substitution.

Key words: Cu-Ni-Be alloy, deformation, aging, mechanical properties, electrical conductivity

中图分类号:

TG166.2

崔书辉, 万庆峰, 张保华, 郑学清, 丁向东. 变形和时效处理对Cu-Ni-Be合金组织与性能的影响[J]. 金属热处理, 2026, 51(2): 286-291.

Cui Shuhui, Wan Qingfeng, Zhang Baohua, Zheng Xueqing,Ding Xiangdong. Effects of deformation and aging treatment on microstructure and properties of Cu-Ni-Be alloy[J]. Heat Treatment of Metals, 2026, 51(2): 286-291.

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变形和时效处理对Cu-Ni-Be合金组织与性能的影响

Effects of deformation and aging treatment on microstructure and properties of Cu-Ni-Be alloy

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