| Ag-Cu-Sn-Ti活性钎焊Gr/2024Al复合材料与TC4钛合金 |
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| 引用本文： | 石俊秒,张丽霞,李宏伟,田晓羽,冯吉才.Ag-Cu-Sn-Ti活性钎焊Gr/2024Al复合材料与TC4钛合金[J].焊接学报,2014,35(11):31-34,38. |
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| 作者姓名： | 石俊秒 张丽霞 李宏伟 田晓羽 冯吉才 |
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| 作者单位： | 1. 哈尔滨工业大学先进焊接与连接国家重点实验室,哈尔滨,150001
2. 哈尔滨工业大学先进焊接与连接国家重点实验室，哈尔滨 150001; 哈尔滨工业大学山东省特种焊接技术重点实验室，威海 264209 |
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| 基金项目： | 国家自然科学基金资助项目(51021002)；哈尔滨工业大学科研创新基金 |
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| 摘 要： | 采用自制的AgCuSnTi钎料对发汗材料Gr/2024Al复合材料和TC4钛合金进行钎焊,对焊后接头界面组织及力学性能进行了分析.结果表明,接头典型界面组织为Gr/2024Al/Ti3AlC2/Ag2Al+Ag3Sn+Al2Cu+Al5CuTi2/Al5CuTi2+Ag3Sn/TC4.钎焊时,活性元素Ti与Gr/2024Al复合材料的石墨基体发生活性反应,实现了TC4与Gr/2024Al复合材料的低温连接,保证了复合材料的力学性能及发汗功能.随钎焊温度升高及保温时间延长,钎缝组织中弥散分布的Al5CuTi2化合物聚集长大成块状,使接头性能下降.当钎焊温度为680℃,保温时间为10min时接头抗剪强度达到最大值17MPa,其为Gr/2024Al复合材料母材强度的70%.
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| 关 键 词： | Gr/Al复合材料 TC、AgCuSnTi钎料 界面组织 抗剪强度 |
| 收稿时间： | 2013/5/14 0:00:00 |
Activating brazing of Gr/2024Al composite material to TC4 titanium alloy with Ag-Cu-Sn-Ti filler |
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| SHI Junmiao,ZHANG Lixi,LI Hongwei,TIAN Xiaoyu and FENG Jicai.Activating brazing of Gr/2024Al composite material to TC4 titanium alloy with Ag-Cu-Sn-Ti filler[J].Transactions of The China Welding Institution,2014,35(11):31-34,38. |
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| Authors: | SHI Junmiao ZHANG Lixi LI Hongwei TIAN Xiaoyu and FENG Jicai |
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| Affiliation: | State Key Laboratory of Advanced Welding and Joining, Harbin Institute of Technology, Harbin 150001, China,State Key Laboratory of Advanced Welding and Joining, Harbin Institute of Technology, Harbin 150001, China,State Key Laboratory of Advanced Welding and Joining, Harbin Institute of Technology, Harbin 150001, China,State Key Laboratory of Advanced Welding and Joining, Harbin Institute of Technology, Harbin 150001, China and State Key Laboratory of Advanced Welding and Joining, Harbin Institute of Technology, Harbin 150001, China;Shandong Provincial Key Laboratory of Special Welding Technology, Harbin Institute of Technology, Weihai 264209, China |
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| Abstract: | Gr/2024 Al composite material and TC4 titanium alloy were successfully brazed with self-developed Ag-Cu-SnTi filler alloy, and the interfacial microstructure and mechanical properties of the brazed joints were investigated. The results show that the typical interfacial structure of brazed joint was Gr/2024 Al composite material/Ti3AlC2/Ag2Al+Ag3Sn+Al2Cu+Al5CuTi2/Al5CuTi2/TC4 titanium alloy. With the increasing of brazing temperature and extending of dwelling time, the amount of Al2Cu compounds decreased but the amount of Al5CuTi2 increased and it finally grew into bulk in the brazed seam. While brazed at 953 K for 10 min, the joint obtained maximum shear strength of 17 MPa at room temperature. |
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| Keywords: | Gr/2024Al composite material TC4 Ag-Cu-Sn-Ti filler interfacial microstructure shear strength |
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