| 纳米复合材料超声波焊接制备下剪切强度及组织研究 |
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| 引用本文： | 熊志林,朱政强,张义福,曾纯.纳米复合材料超声波焊接制备下剪切强度及组织研究[J].南昌大学学报(工科版),2010,32(4):322-325. |
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| 作者姓名： | 熊志林 朱政强 张义福 曾纯 |
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| 作者单位： | 南昌大学,机电工程学院,江西,南昌,330031 |
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| 基金项目： | 国家自然科学基金资助项目，江西省青年科学家(井冈之星)培养对象计划资助项目，教育部留学回国人员科研启动基金 |
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| 摘 要： | 采用超声波焊接方法制备碳纳米管增强铝基复合材料,研究试件表面处理状态、焊接时间和焊接压力等工艺参数对焊接接头剪切强度的影响规律。试验结果表明:碳纳米管的加入具有较好的增强效果,提高了复合材料的力学性能;试件表面加乙醇处理、焊接时间120 ms及焊接压力17.5 MPa时,复合材料的接头剪切强度最高为11.12 MPa,相比基体材料提高28.6%;通过金相观察、扫描电镜(SEM)分析,发现碳纳米管很好地嵌入到了铝合金基体中,起到增强效果。
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| 关 键 词： | 超声波焊接 碳纳米管 剪切强度 显微组织 |
Study on Shear Strength and Microstructure of Nanocomposite Fabricated by Ultrasonic Welding |
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| XIONG Zhi-lin,ZHU Zheng-qiang,ZHANG Yi-fu,ZENG Chun.Study on Shear Strength and Microstructure of Nanocomposite Fabricated by Ultrasonic Welding[J].Journal of Nanchang University(Engineering & Technology Edition),2010,32(4):322-325. |
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| Authors: | XIONG Zhi-lin ZHU Zheng-qiang ZHANG Yi-fu ZENG Chun |
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| Affiliation: | (School of Mechanical and Electrical Engineering,Nanchang University,Nanchang 330031,China) |
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| Abstract: | Aluminium alloy（6061） composites reinforced by carbon nanotubes（CNTs） were fabricated by ultrasonic welding.Variation of shear strength of welding joint under the state of aluminum surface treatment,welding time and welding pressure were studied.Experimental results indicate that CNTs can strengthen the welding joint strength perfectly and improve the mechanical properties of composites.The maximum shear strength of composites joint is up to 11.12 MPa and improved by 28.6% when compared with that of matrix materials under the conditions of adding ethanol to the surface of specimen,welding time 120 ms and welding pressure 17.5 MPa.It is confirmed that CNTs can be well embedded into aluminium alloy matrix through the microstructure and scanning electron microscopy（SEM）,which can increase joint strength. |
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| Keywords: | ultrasonic welding carbon nanotubes shear strength microstructure |
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