Effect of solution temperature on microstructure and properties of QBe1.9 and QBe2 beryllium copper alloys

doi:10.13251/j.issn.0254-6051.2025.03.015

Abstract

Abstract: Effect of solution temperature on microstructure and properties of QBe1.9 and QBe2 beryllium copper alloys was studied by solution treatment at 780, 790, 800 ℃ and aging treatment at 320 ℃. The results show that QBe1.9 beryllium copper alloy requires lower driving force for complete solution treatment, has smaller grain size and more uniform distribution. With the increase of solution temperature, the hardness, tensile strength and conductivity of the QBe1.9 and QBe2 beryllium copper alloys after solution treatment decrease continuously, while the elongation increases continuously. After aging at 320 ℃ for 3 h, the tensile strength and hardness of the QBe1.9 beryllium copper alloy are much higher than that of the QBe2 beryllium copper alloy, and the conductivity and elongation are lower than that of the QBe2 beryllium copper alloy. When the solution temperature is 800 ℃, the two alloys exhibit the optimal comprehensive properties. The hardness of the QBe2 beryllium copper alloy is only 327 HV0.5, the tensile strength is 1032.0 MPa, the elongation is 8.9%, and the conductivity is 31.80%IACS. The hardness of the QBe1.9 beryllium copper alloy is 404 HV0.5, the tensile strength is 1336.8 MPa, the elongation is 7.3%, and the conductivity is 26.12%IACS. It provides a solution to the problem of improving the mechanical properties of the QBe1.9 beryllium copper alloy.

Key words: QBe1.9 beryllium copper alloy, QBe2 beryllium copper alloy, solution temperature, mechanical properties

CLC Number:

TG166.2

Zhang Baohua, Dong Fuyuan, Cui Shuhui, Huang Xugang. Effect of solution temperature on microstructure and properties of QBe1.9 and QBe2 beryllium copper alloys[J]. Heat Treatment of Metals, 2025, 50(3): 96-101.

References

[1] 张保华, 焦晓亮, 崔书辉, 等. 连续淬火工艺对轧制态TBe2铍铜带材组织与性能的影响[J]. 宁夏工程技术, 2022, 21(4): 363-366.
Zhang Baohua, Jiao Xiaoliang, Cui Shuhui, et al. Effect of continuous quenching process on micro-structure and properties of rolled TBe2 beryllium copper strip[J]. Ningxia Engineering Technology, 2022, 21(4): 363-366.
[2] Zheng W, Jiang L, Yi Z, et al. Comparison of the mechanical properties and microstructures of QB2.0 and C17200 alloys[J]. Materials, 2022, 15(7): 2570.
[3] 狄平. 铍青铜形变时效工艺的优化[J]. 金属热处理, 2003, 28(2): 63-64, 69.
Di Ping. Optimization of deformation aging process of beryllium bronze[J]. Heat Treatment of Metals, 2003, 28(2): 63-64, 69.
[4] 黄旭刚, 李海龙, 张健康, 等. 固溶温度对铍青铜QBe2带材组织与性能的影响[J]. 特种铸造及有色合金, 2023, 43(12): 1669-1673.
Huang Xugang, Li Hailong, Zhang Jiankang, et al. Effects of solution temperture on microstructure and properties of beryllium bronze QBe2 strip[J]. Special Casting & Nonferrous Alloys, 2023, 43(12): 1669-1673.
[5] 岳丽娟, 王艳婷, 赵红运, 等. QBe2铍青铜合金固溶工艺与组织性能研究[J]. 中国材料进展, 2022, 41(3): 237-240.
Yue Lijuan, Wang Yanting, Zhao Hongyun, et al. Study on solid solution technology and microstructure of QBe2 beryllium bronze alloy[J]. Materials China, 2022, 41(3): 237-240.
[6] 施永奎. 高强度QBe2铍铜合金线材的制备及性能研究[D]. 兰州: 兰州理工大学, 2007.
[7] 朱庆丰, 王浩, 高扬, 等. 固溶温度对2050铝锂合金挤压棒材组织和性能的影响[J]. 材料工程, 2023, 51(11): 71-78.
Zhu Qingfeng, Wang Hao, Gao Yang, et al. Effect of solid solution temperature on microstructure and properties of 2050 Al-Li alloy extruded bars[J]. Journal of Materials Engineering, 2023, 51(11): 71-78.
[8] Jia S F, Zhan L H, Zhang J. Influence of solid solution treatment on microstructure and mechanical properties of 2219 aluminium alloy[J]. Materials Research Innovations, 2014, 18(S2): 52-58.
[9] 张茁, 陈康华. 固溶处理对 Al-Zn-Mg-Cu 铝合金电导率的影响[J]. 粉末冶金材料科学与工程, 2004, 9(1): 79-83.
Zhang Zhuo, Chen Kanghua. Effect of solution heat-treating on electrical conductivity of Al-Zn-Mg-Cu aluminum alloy[J]. Materials Science and Engineering of Powder Metallurgy, 2004, 9(1): 79-83.
[10] 王菲, 姜雁斌, 张志豪. Al含量对Cu-Be-Ni合金组织和性能的影响[J]. 中国有色金属学报, 2021, 31(5): 1261-1269.
Wang Fei, Jiang Yanbin, Zhang Zhihao. Effect of Al content on microstructure and properties of Cu-Be-Ni alloy[J]. The Chinese Journal of Nonferrous Metals, 2021, 31(5): 1261-1269.
[11] 万金风, 赵帆, 刘新华. 旋锻复合铜包铍铜线材的组织性能[J]. 中国有色金属学报, 2023, 33(3): 729-740.
Wan Jinfeng, Zhao Fan, Liu Xinhua. Microstructure and properties of copper-clad beryllium copper wire fabricated by rotary swaging[J]. The Chinese Journal of Nonferrous Metals, 2023, 33(3): 729-740.

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