| 激光焊接颗粒增强铝基复合材料中TiB2颗粒的演变行为（英文） |
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| 引用本文： | 孟超,崔海超,芦凤桂,唐新华. 激光焊接颗粒增强铝基复合材料中TiB2颗粒的演变行为（英文）[J]. 中国有色金属学会会刊, 2013, 23(6): 1543-1548. DOI: 10.1016/S1003-6326(13)62628-X |
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| 作者姓名： | 孟超 崔海超 芦凤桂 唐新华 |
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| 作者单位： | 上海交通大学材料科学与工程学院,上海市激光制造与材料改性重点实验室 |
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| 基金项目： | Project(11ZR1417500)supported by the Natural Science Foundation of Shanghai,China;Project(51035004)supported by the National Natural Science Foundation of China |
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| 摘 要： | 研究大功率激光器焊接TiB2颗粒增强铝基复合材料时TiB2粒子的演变行为。采用X射线衍射(XRD)、扫描电镜(SEM)及能谱(EDS)分析焊缝内粒子的物相、热力学过程及形貌特征;同时对TiB2和铝基体的界面反应进行讨论。结果表明:当TiB2团簇尺寸大于激光光斑直径时,焊缝中部的TiB2粒子会熔融在一起,较大尺寸的TiB2会发生断裂;当与铝熔体接触后,熔化后的TiB2粒子会与Al发生反应生成Al3Ti和AlB12,并且焊缝中部的界面反应比焊缝边缘的剧烈。
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| 关 键 词： | 金属基复合材料 TiB2粒子 激光焊接 界面反应 |
| 收稿时间： | 2012-05-02 |
Evolution behavior of TiB2 particles during laser welding on aluminum metal matrix composites reinforced with particles |
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| Chao MENG,Hai-chao CUI,Feng-gui LU,Xin-hua TANG. Evolution behavior of TiB2 particles during laser welding on aluminum metal matrix composites reinforced with particles[J]. Transactions of Nonferrous Metals Society of China, 2013, 23(6): 1543-1548. DOI: 10.1016/S1003-6326(13)62628-X |
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| Authors: | Chao MENG Hai-chao CUI Feng-gui LU Xin-hua TANG |
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| Affiliation: | Shanghai Key Laboratory of Materials Laser Processing and Modification, School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China |
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| Abstract: | The evolution behavior of TiB2 particles was studied during laser welding on aluminum metal matrix composites (MMCs) reinforced with TiB2 particles by a high power laser. X-ray diffractometry (XRD), scanning electron microscopy (SEM) and energy spectrum analysis (EDS) were used to analyze the phase, thermodynamics and morphology characteristics of the particles in the weld seam, and the interface reactions between TiB2 particles and aluminum matrix were also discussed. The results show that partial TiB2 particles melt and merge into larger ones in the middle of the weld seam and that fracture can be found in larger particles when the scale of TiB2 cluster is larger than the spot size of laser. Al3Ti and AlB12 are produced by the interface reaction between TiB2 particles and Al matrix. The interface reaction of broken TiB2 particles in the middle of the weld seam is stronger than that at the edge of the weld seam. |
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| Keywords: | metal matrix composites laser welding interface reaction |
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