| SiCP/Al复合材料的真空扩散钎焊 |
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| 引用本文： | 刘世艳,张丽霞,亓钧雷,冯吉才. SiCP/Al复合材料的真空扩散钎焊[J]. 焊接学报, 2016, 37(10): 117-120 |
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| 作者姓名： | 刘世艳 张丽霞 亓钧雷 冯吉才 |
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| 作者单位： | 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 |
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| 摘 要： | 文中采用Al/Cu/Al复合箔扩散钎焊SiCP/Al复合材料，采用SEM，EDS，XRD分析接头界面组织，研究了钎焊温度对接头界面组织及力学性能的影响，并结合Al-Cu二元相图分析接头形成机制.结果表明，固定连接压力为1 MPa，保温时间为10 min，当钎焊温度从590℃升至640℃，接头界面产物由Al2Cu+αAl共晶组织转变为断续的Al2Cu金属间化合物，Al-Cu液相向两侧母材扩散的距离增加，接头的抗剪强度呈现先增大后减小的变化趋势.当钎焊温度为620℃，保温时间为10 min，连接压力为1 MPa时，接头的抗剪强度达到最大值69 MPa.
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| 关 键 词： | SiCP/Al复合材料 扩散钎焊 界面组织 抗剪强度 |
| 收稿时间： | 2014-11-19 |
Vacuum diffusion brazing of SiCp/Al composites |
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| LIU Shiyan,ZHANG Lixi,QI Junlei and FENG Jicai. Vacuum diffusion brazing of SiCp/Al composites[J]. Transactions of The China Welding Institution, 2016, 37(10): 117-120 |
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| Authors: | LIU Shiyan ZHANG Lixi QI Junlei FENG Jicai |
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| Affiliation: | State Key Laboratory of Advanced Welding and Joining, Harbin Institute of Technology, Harbin 150001, China |
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| Abstract: | Vacuum diffusion brazing of SiC particle reinforced aluminum matrix was performed with Al/Cu/Al composite foils. The microstructure of the joint was investigated by SEM, EDS and XRD. The formation mechanism of the joints was analyzed according to Al-Cu binary phase diagram. The effects of brazing temperature on the interfacial microstructure and shear strength were studied. The results shows that as the brazing temperature rise from 590℃ to 640℃, the interfacial products change from Al2Cu+αAl eutectic structure to discontinuous Al2Cu intermetallic compound. The diffusion distance of liquid into base materials increase and the shear strength of joints increases and then decreases with brazing parameters. When the brazing temperature is 620℃, the holding time is 10 min and the bonding pressure is 1 MPa, the shear strength of the joints is up to the maximum value of 69 MPa. |
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| Keywords: | SiC particle reinforced aluminum matrix diffusion brazing interface structure shear strength |
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