| Sn-0.7Cu-xNb复合钎料微观组织和力学性能 |
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| 引用本文： | 刘政,张尧成,徐宇航,刘坡.Sn-0.7Cu-xNb复合钎料微观组织和力学性能[J].焊接,2021(1):24-27,60,62,63. |
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| 作者姓名： | 刘政 张尧成 徐宇航 刘坡 |
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| 作者单位： | 桂林航天工业学院,广西桂林541004;常熟理工学院,江苏常熟215500 |
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| 基金项目： | 国家自然科学基金地区科学基金项目(51865006);江苏省高校自然科学研究重大项目(19KJA430001,18KJA460001)。 |
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| 摘 要： | 文中主要研究了纳米Nb颗粒对Sn-0.7Cu基复合钎料显微组织和力学性能的影响。结果表明,添加纳米Nb颗粒细化了Sn-0.7Cu复合钎料微观组织,提高了Sn-0.7Cu复合钎料的抗拉强度。当Nb含量为0.12%时抗拉强度达最大值25.36 MPa,但此时钎料的断后伸长率有所降低。Sn-0.7Cu-x Nb复合钎料的断裂模式均为塑性断裂,随Nb含量的增加,Sn-0.7Cu基复合钎料断口表面的韧窝尺寸逐渐变小,表明微量的纳米Nb可以抑制合金内Cu 6 Sn 5金属间化合物的长大。
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| 关 键 词： | Nb颗粒 Sn-0.7Cu钎料 显微组织 力学性能 断口形貌 |
| 收稿时间： | 2020/11/15 0:00:00 |
Microstructure and mechanical properties of Sn-0.7Cu-x Nb composite solder |
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| Liu Zheng,Zhang Yaocheng,Xu Yuhang,Liu Po.Microstructure and mechanical properties of Sn-0.7Cu-x Nb composite solder[J].Welding & Joining,2021(1):24-27,60,62,63. |
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| Authors: | Liu Zheng Zhang Yaocheng Xu Yuhang Liu Po |
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| Affiliation: | (Guilin University of Aerospace Technology,Guilin 541004,Guangxi,China;Changshu Institute of Technology,Changshu 215500,Jiangsu,China) |
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| Abstract: | The effect of Nb nano-particles on the microstructures and mechanical properties of Sn-0.7Cu composite solder was studied in this paper.The results showed that the microstructure of Sn-0.7Cu composite solder was refined by adding Nb nano-particles and the tensile strength of joint with Sn-0.7Cu composite solder was improved.When Nb content was 0.12%(mass fraction),the maximum tensile strength reached 25.36 MPa,but the elongation of the solder was reduced.The fracture mode of Sn-0.7Cu-x Nb composite solder was all plastic fracture.The size of dimples on the fracture surface of Sn-0.7Cu composite solder decreased gradually with the increase of Nb content,which indicated that the growth of Cu 6 Sn 5 intermetallic was inhibited by adding a small amount of Nb nano-particles. |
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| Keywords: | Nb particles Sn-0 7Cu solder microstructure mechanical properties fracture morphology |
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