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学者姓名：黄婷
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摘要 ：
本发明公开一种纤维增强热塑性复合材料与金属激光压焊方法，涉及热塑性复合材料与金属连接技术领域，包括以下步骤：在待焊接金属的接头表面预制凸起结构；预先设定激光随焊压紧工作头的工作参数；在前滚轮压力的作用下，待焊接区的金属与热塑性复合材料形成紧密贴合；激光加热金属材料表面，使热塑性复合材料的热塑性树脂基熔融；在后滚轮的压力装置及超声振动装置的作用下，凸起结构嵌入热塑性复合材料中，熔融树脂基体流动扩散并填充金属表面，实现热塑性复合材料与金属的激光连接。本发明可以实现航空航天、汽车等领域中纤维增强热塑性复合材料与金属的大型三维结构件连接，有效抑制焊接缺陷的产生，保证焊接质量，提高焊接接头的力学性能。
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| GB/T 7714 | 徐洁洁 , 黄婷 , 肖荣诗 . 一种纤维增强热塑性复合材料与金属激光压焊方法 : CN202110132926.6[P]. | 2021-02-01 . |
| MLA | 徐洁洁 等. "一种纤维增强热塑性复合材料与金属激光压焊方法" : CN202110132926.6. | 2021-02-01 . |
| APA | 徐洁洁 , 黄婷 , 肖荣诗 . 一种纤维增强热塑性复合材料与金属激光压焊方法 : CN202110132926.6. | 2021-02-01 . |
| 导入链接 | NoteExpress RIS BibTex |
摘要 ：
纤维增强热塑性树脂基复合材料与金属的异质构件在轻量化现代装备中的应用日趋广泛,实现异质构件优质、高效、可靠的连接具有重要的学术意义和工程应用价值.详细综述了异质接头激光连接原理和界面结合机制,以及连接界面结合强度增强方法和激光连接工艺对连接接头抗剪强度的影响.通过增强机械结合和化学键结合,同时采用控制激光热输入、施加压力、填充树脂材料等措施抑制缺陷的产生,接头抗剪强度已可以满足工业应用对静载强度的要求.同时展望了纤维增强热塑性树脂基复合材料与金属激光连接技术的发展趋势.
关键词 ：
接头强度 接头强度 激光连接 激光连接 界面增强方法 界面增强方法 纤维增强热塑性树脂基复合材料 纤维增强热塑性树脂基复合材料 超快激光刻蚀 超快激光刻蚀
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| GB/T 7714 | 徐洁洁 , 王栋 , 肖荣诗 et al. 纤维增强热塑性树脂基复合材料与金属激光连接研究进展 [J]. | 焊接学报 , 2021 , 42 (10) : 73-86,102 . |
| MLA | 徐洁洁 et al. "纤维增强热塑性树脂基复合材料与金属激光连接研究进展" . | 焊接学报 42 . 10 (2021) : 73-86,102 . |
| APA | 徐洁洁 , 王栋 , 肖荣诗 , 黄婷 . 纤维增强热塑性树脂基复合材料与金属激光连接研究进展 . | 焊接学报 , 2021 , 42 (10) , 73-86,102 . |
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摘要 ：
Although laser welded Al?Li alloys show great potential for application in aerospace industry, the detailed relationship between local hardness and complex microstructure remained unclear. In the present study, relationship between precipitation behavior and local hardness in a defect-free laser pressure weld of Al?Li alloy 2198 was systematically examined by transmission electron microscopy. Hardness profile of the laser pressure weld was reduced in the vicinity of the weld center, mainly explained by size and density of the strengthening precipitates. Moreover, post-weld aging increased the density of strengthening precipitates in the precipitate dissolved regions, increasing their hardness values markedly. On the other hand, a few precipitates were formed in the precipitate-coarsened regions during post-weld aging, which slightly increased the local hardness. The variation in hardness during post-weld aging could be well correlated with the precipitation behavior in each region of the laser pressure weld.
关键词 ：
Al?Li alloy Al?Li alloy Artificial aging Artificial aging Hardness profile Hardness profile Laser pressure welding Laser pressure welding Microstructural characterization Microstructural characterization Precipitation sequence Precipitation sequence
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| GB/T 7714 | Zhao, Tianbo , Sato, Yutaka S. , Xiao, Rongshi et al. Hardness distribution and aging response associated with precipitation behavior in a laser pressure welded Al ? Li alloy 2198 [J]. | MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING , 2021 , 808 . |
| MLA | Zhao, Tianbo et al. "Hardness distribution and aging response associated with precipitation behavior in a laser pressure welded Al ? Li alloy 2198" . | MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING 808 (2021) . |
| APA | Zhao, Tianbo , Sato, Yutaka S. , Xiao, Rongshi , Huang, Ting , Zhang, Jingquan . Hardness distribution and aging response associated with precipitation behavior in a laser pressure welded Al ? Li alloy 2198 . | MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING , 2021 , 808 . |
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摘要 ：
Industrial application of copper often requires a joining. Unfortunately, a commercial laser welding of this material is challenging due to extremely high reflectivity of copper at the near-infrared wavelength. In this work, the sound copper joints were produced at relatively high welding speed of 15 m/min by using a pressure-assisted fiber-laser welding. It was theoretically shown that the material melting arisen from a convergence of multiple reflections of the laser beam. By using electron backscatter diffraction (EBSD), it was found that microstructural changes were induced by a laser-induced thermal effect as well as a roller-induced pressure. It was deduced that the molten material solidified before feeding to the pressure rolls and thus it experienced a notable plastic strain during the welding process. The present work provides an effective method for commercial joining of high-reflective metals by using the near-infrared fiber laser.
关键词 ：
Copper Copper Laser welding Laser welding Microstructure Microstructure Weld formation mechanism Weld formation mechanism
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| GB/T 7714 | Zhang, Jingquan , Huang, Ting , Mironov, Sergey et al. Laser pressure welding of copper [J]. | OPTICS AND LASER TECHNOLOGY , 2021 , 134 . |
| MLA | Zhang, Jingquan et al. "Laser pressure welding of copper" . | OPTICS AND LASER TECHNOLOGY 134 (2021) . |
| APA | Zhang, Jingquan , Huang, Ting , Mironov, Sergey , Wang, Dong , Zhang, Qingwei , Wu, Qiang et al. Laser pressure welding of copper . | OPTICS AND LASER TECHNOLOGY , 2021 , 134 . |
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摘要 ：
铝合金对近红外光纤激光反射率高,激光能量利用率低,目前通常采用"万瓦级"光纤激光实现铝合金的高速激光焊接.文中采用激光压力焊接的方法,实现了铝合金"千瓦级"光纤激光的高速焊接.研究了不同工艺参数下焊缝的成形性,计算了激光能量的汇聚规律,并利用电子背散射衍射技术(EBSD)对焊缝微观结构进行表征.结果表明,激光功率为1～6 kW、焊接速度为5～20 m/min时均可实现焊接.当激光功率为6 kW时,焊接速度可达50 m/min.计算结果证明,激光压力焊接方法具有显著的能量汇聚作用,功率密度最大可达到原始聚焦激光束的4.6倍,提高了激光能量的利用率.通过对焊缝微观组织的表征进一步证明,激光能量汇聚作用实现了材料的快速熔化凝固,随后在压力作用下,填充了搭接间隙.
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| GB/T 7714 | 张景泉 , 黄婷 , 王栋 et al. 铝合金光纤激光高速压力焊接 [J]. | 焊接学报 , 2021 , 42 (4) : 20-27 . |
| MLA | 张景泉 et al. "铝合金光纤激光高速压力焊接" . | 焊接学报 42 . 4 (2021) : 20-27 . |
| APA | 张景泉 , 黄婷 , 王栋 , 武强 , 徐洁洁 , 肖荣诗 . 铝合金光纤激光高速压力焊接 . | 焊接学报 , 2021 , 42 (4) , 20-27 . |
| 导入链接 | NoteExpress RIS BibTex |
摘要 ：
One-dimensional Si nanostructures with carbon coating (1D Si@C) show great potential in lithium ion batteries (LIBs) due to small volume expansion and efficient electron transport. However, 1D Si@C anode with large area capacity still suffers from limited cycling stability. Herein, a novel branched Si architecture is fabricated through laser processing and dealloying. The branched Si, composed of both primary and interspaced secondary dendrites with diameters under 100 nm, leads to improved area capacity and cycling stability. By coating a carbon layer, the branched Si@C anode shows gravimetric capacity of 3059 mAh g-1 (1.14 mAh cm-2 ). At a higher rate of 3 C, the capacity is 813 mAh g-1 , which retained 759 mAh g-1 after 1000 cycles at 1 C. The area capacity is further improved to 1.93 mAh cm-2 and remained over 92% after 100 cycles with a mass loading of 0.78 mg cm-2 . Furthermore, the full-cell configuration exhibits energy density of 405 Wh kg-1 and capacity retention of 91% after 200 cycles. The present study demonstrates that laser-produced dendritic microstructure plays a critical role in the fabrication of the branched Si and the proposed method provides new insights into the fabrication of Si nanostructures with facility and efficiency.
关键词 ：
branched Si branched Si dealloying dealloying laser processing laser processing LIBs LIBs Si@C Si@C
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| GB/T 7714 | Cao Li , Huang Ting , Cui Mengya et al. Facile and Efficient Fabrication of Branched Si@C Anode with Superior Electrochemical Performance in LIBs. [J]. | Small , 2021 , 17 (14) : e2005997 . |
| MLA | Cao Li et al. "Facile and Efficient Fabrication of Branched Si@C Anode with Superior Electrochemical Performance in LIBs." . | Small 17 . 14 (2021) : e2005997 . |
| APA | Cao Li , Huang Ting , Cui Mengya , Xu Jiejie , Xiao Rongshi . Facile and Efficient Fabrication of Branched Si@C Anode with Superior Electrochemical Performance in LIBs. . | Small , 2021 , 17 (14) , e2005997 . |
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摘要 ：
Femtosecond laser has been widely utilized for modification of crystal structure to achieve desired functions. So far, however, the effect of crystallographic orientation on the induced structure by femtosecond laser processing has yet been comprehensively studied. The present work is undertaken in an attempt to fill this gap in our knowledge. To this end, commercial-purity Si is used as a target material and high-resolution transmission electron microscopy as well as electron backscatter diffraction are applied to examine the irradiation-induced microstructural changes. The structural response of the pulsed material is found to be principally influenced by the crystallographic orientation of the target surface. Specifically, at the surface orientation close to {111}, a pronounced amorphization effect is observed whereas no disordered material is detected at the orientations close to {100}. This phenomenon could be explained by the lowest crystallization speed required by the (111) surface due to its smallest surface energy. Compared with nanosecond laser, non-thermal melting induced by femtosecond laser induces mild thermal gradient and favors recrystallization.
关键词 ：
Amorphization Amorphization Crystallographic orientation Crystallographic orientation Femtosecond laser Femtosecond laser Silicon Silicon
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| GB/T 7714 | Zhang, Xin , Zhang, Liang , Mironov, Sergey et al. Effect of crystallographic orientation on structural response of silicon to femtosecond laser irradiation [J]. | APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING , 2021 , 127 (3) . |
| MLA | Zhang, Xin et al. "Effect of crystallographic orientation on structural response of silicon to femtosecond laser irradiation" . | APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING 127 . 3 (2021) . |
| APA | Zhang, Xin , Zhang, Liang , Mironov, Sergey , Xiao, Rongshi , Guo, Liang , Huang, Ting . Effect of crystallographic orientation on structural response of silicon to femtosecond laser irradiation . | APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING , 2021 , 127 (3) . |
| 导入链接 | NoteExpress RIS BibTex |
摘要 ：
Dissimilar joining of CFRP and conventional metal attracts tremendous interest due to the increased usage of CFRP in the aerospace industry. However, until now, laser joining of CFRP to metal is commonly performed with low welding velocity (<20 mm/s), which limits its practical applications due to the low joining efficiency. In this work, both experiments and simulations were conducted. The defect-free CFRP/AA2060 laser joint was achieved with a laser power of 5 kW and a welding velocity of 110 mm/s. Compared with the Gaussian laser beam, a rectangular beam spot was obtained using an integrated mirror in the present study. The rectangular beam spot provided a relatively uniform energy density, thus offering a uniform temperature distribution at the CFRP/ AA2060 interface, minimizing the porosity defect as well as exhibiting the high shear force. More importantly, the CFRP/AA2060 joints were achieved over a wide range of joining parameters, indicating superior adaptability of the laser joining CFRP to metals with the rectangular beam spot.
关键词 ：
Al-Li alloy Al-Li alloy CFRP CFRP Laser joining Laser joining Numerical simulation Numerical simulation
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| GB/T 7714 | Wang, Dong , Xu, Jiejie , Huang, Ting et al. Effect of beam shaping on laser joining of CFRP and Al-Li alloy [J]. | OPTICS AND LASER TECHNOLOGY , 2021 , 143 . |
| MLA | Wang, Dong et al. "Effect of beam shaping on laser joining of CFRP and Al-Li alloy" . | OPTICS AND LASER TECHNOLOGY 143 (2021) . |
| APA | Wang, Dong , Xu, Jiejie , Huang, Ting , Jing, Ruomu , Zhang, Jingquan , Xiao, Rongshi . Effect of beam shaping on laser joining of CFRP and Al-Li alloy . | OPTICS AND LASER TECHNOLOGY , 2021 , 143 . |
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摘要 ：
本发明提供了一种送丝式双光束激光增材制造方法，其中第一激光束(2)作用于焊丝(1)上，在焊丝端部诱导产生蒸发前沿(4)，以深熔模式加热熔化焊丝，熔化材料过渡到基板上形成熔池(5)和熔覆层(6)；第二激光束(3)作用于基板(7)表面，以热导模式对基板进行预热。本发明利用深熔模式加热熔化焊丝，可以显著提高材料沉积速率；采用热导模式预热基板，方便调控温度场和熔覆层形貌，有效避免熔合不良、裂纹等缺陷。
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| GB/T 7714 | 黄婷 , 肖荣诗 . 一种送丝式双光束激光增材制造方法 : CN202011281588.4[P]. | 2020-11-16 . |
| MLA | 黄婷 et al. "一种送丝式双光束激光增材制造方法" : CN202011281588.4. | 2020-11-16 . |
| APA | 黄婷 , 肖荣诗 . 一种送丝式双光束激光增材制造方法 : CN202011281588.4. | 2020-11-16 . |
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摘要 ：
本发明提出一种Si NWs‑rGO制造方法、Si NWs‑rGO锂离子电池电极制造方法。本发明通过复合激光表面重熔、脱合金和热处理工艺制备还原氧化石墨烯(rGO)包覆的Si纳米线(Si NWs)结构，从而优化电极的导电性和循环稳定性。Si NWs‑rGO结构中纳米线呈树枝状互相连接并存在间隔，为体积膨胀预留空间；rGO包覆可以提高电极的导电性和结构稳定性，改善电池的电化学性能。电极制造过程如下：首先使用激光重熔Al‑Si合金表面，将重熔层脱合金后获得Si纳米线，复合热处理工艺包覆rGO，最后经涂覆法获得锂离子电池负极。此方法柔性高、工艺简单，成本低，可实现高效、高产量制备性能良好的锂离子电池电极材料。
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| GB/T 7714 | 黄婷 , 曹利 , 肖荣诗 . Si NWs-rGO制造方法、Si NWs-rGO锂离子电池电极制造方法 : CN202011325113.0[P]. | 2020-11-23 . |
| MLA | 黄婷 et al. "Si NWs-rGO制造方法、Si NWs-rGO锂离子电池电极制造方法" : CN202011325113.0. | 2020-11-23 . |
| APA | 黄婷 , 曹利 , 肖荣诗 . Si NWs-rGO制造方法、Si NWs-rGO锂离子电池电极制造方法 : CN202011325113.0. | 2020-11-23 . |
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