| 基于银合金先导润湿的铜磷钎料钎焊钢分析 |
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| 引用本文： | 龙伟民,董博文,张青科,何鹏,薛鹏.基于银合金先导润湿的铜磷钎料钎焊钢分析[J].焊接学报,2017,38(1):1-4. |
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| 作者姓名： | 龙伟民 董博文 张青科 何鹏 薛鹏 |
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| 作者单位： | 1.郑州机械研究所 新型钎焊材料与技术国家重点实验室, 郑州 450001 |
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| 基金项目： | 国家国际科技合作专项资助项目（2015DFA50470） |
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| 摘 要： | 基于低熔点合金先导润湿的原理，设计制备了一种表面覆盖低熔点银合金层的新型铜磷焊片.采用该焊片钎焊45碳钢，分析了界面反应机理及钎焊接头性能，并和使用普通铜磷焊片钎焊的碳钢接头进行了对比.结果表明，表面覆盖的低熔点银合金早于铜磷合金熔化润湿碳钢基体，并形成反应层，铜磷钎料熔化后与银合金层反应熔合，冷却后形成良好的冶金连接；与使用铜磷钎料直接钎焊的接头相比，银合金先导润湿钎焊的铜磷/碳钢界面化合物层厚度明显减小，抗剪强度超过160 MPa，断裂发生在靠近连接界面的钎焊材料内部，接头强韧性显著改善.
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| 关 键 词： | 钎焊 先导润湿 铜磷钎料 |
| 收稿时间： | 2015/11/9 0:00:00 |
Brazing of carbon steel using Cu-P brazing filler metals based on guide wetting of Ag alloys |
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| LONG Weimin,DONG Bowen,ZHANG Qingke,HE Peng and XUE Peng.Brazing of carbon steel using Cu-P brazing filler metals based on guide wetting of Ag alloys[J].Transactions of The China Welding Institution,2017,38(1):1-4. |
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| Authors: | LONG Weimin DONG Bowen ZHANG Qingke HE Peng and XUE Peng |
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| Affiliation: | 1.State Key Laboratory of Advanced Brazing Filler Metals & Technology, Zhengzhou Research Institute of Mechanical Engineering, Zhengzhou 450001, China2.State Key Laboratory of Advanced Welding and Joining, Harbin Institute of Technology, Harbin 150001, China3.School of Materials Science and Engineering, Nanjing University of Science and Technology, Nanjing 210094, China |
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| Abstract: | Based on guide wetting mechanism of low melting point alloy, a Cu-P brazing sheet coated with low melting point Ag alloy was prepared, the interfacial reaction mechanisms and properties of the 45 steel joint brazed using the sheet were studied and compared with that brazed joint using common Cu-P brazing alloy. The results revealed that the Ag alloy coating melts before melting of the CuP alloy and wets and reacts with the steel substrate firstly; then the Cu-P alloy melts and fuse with the Ag alloy, forms high-quality metallurgical bonding. The interfacial compounds layer at the joint brazed using Ag alloy coated sheet is far thinner than that brazed with common Cu-P alloy. The shear strength is higher than 160 MPa, the joint fracture inside the braze alloy close to the joint interface, and the strength and toughness are obviously improved. |
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| Keywords: | brazing guide wetting Cu-P Brazing filler metals |
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