| Cu75Pt钎料钎焊Ti60与TC4接头界面组织及性能 |
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| 引用本文： | 郭民,雷玉珍,赵健,宋晓国,于治水,石铭霄.Cu75Pt钎料钎焊Ti60与TC4接头界面组织及性能[J].焊接学报,2022,43(2):40-44. |
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| 作者姓名： | 郭民 雷玉珍 赵健 宋晓国 于治水 石铭霄 |
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| 作者单位： | 1.上海工程技术大学, 上海, 201620 |
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| 基金项目： | 国家自然科学基金资助项目(51775138,51905332)；;山东省重点研发计划资助项目(2017GGX40103)； |
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| 摘 要： | 采用Cu75Pt钎料实现了Ti60钛合金与TC4钛合金的真空钎焊,采用SEM,EDS,XRD分析了钎焊接头显微结构.结果表明,接头典型组织结构为Ti60/Ti2Cu+α-Ti/Ti2Cu/Ti2Cu+Ti3Pt/Ti2Cu/Ti2Cu+α-Ti/TC4.对不同钎焊温度下获得的接头界面组织结构进行了分析,结果表明,随着钎...
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| 关 键 词： | 真空钎焊 钎焊温度 界面结构 力学性能 |
| 收稿时间： | 2021-09-18 |
Interfacial microstructure and mechanical property of Ti60 and TC4 joint brazed with Cu75Pt filler metal |
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| Affiliation: | 1.Shanghai University of Engineering Science, Shanghai, 201620, China2.Shandong Provincial Key Lab of Special Welding Technology, Harbin Institute of Technology at Weihai, Weihai, 264209, China3.Jiangsu University of Science and Technology, Zhenjiang, 212003, China |
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| Abstract: | The Ti60 titanium alloy was successfully vacuum brazed with TC4 titanium alloy by using Cu75Pt filler metal. The microstructure of brazed joints was analyzed by scanning electron microscope (SEM), energy dispersive spectrometer (EDS) and X-ray diffraction (XRD). The results showed that the typical microstructure of Ti60/Cu75Pt/TC4 joint was Ti60/Ti2Cu + α-Ti/Ti2Cu/Ti2Cu + Ti3Pt/Ti2Cu/Ti2Cu + α-Ti/TC4. The effect of different brazing temperatures on the interfacial microstructure and mechanical properties of joints was studied. The results revealed that with the increasing of brazing temperature, the thicknesses of diffusion layers were increased gradually. However, the Ti2Cu, Ti3Pt and the width of brazing seams were decreased. The shear strength of the joint increased first and then decreased with the increase of brazing temperature. The maximum shear strength of 130.9 MPa was obtained at the brazing temperature of 970 ℃ for 10min. The fracture analysis of the joint showed that the fracture mode is brittle fracture, which occurred in the center of brazing seam. |
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