| Electron beam welding of SiCp/LD2 composite |
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| 引用本文： | 陈茂爱 武传松 邹增大. Electron beam welding of SiCp/LD2 composite[J]. 中国有色金属学会会刊, 2006, 16(4): 818-823. DOI: 10.1016/S1003-6326(06)60332-4 |
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| 作者姓名： | 陈茂爱 武传松 邹增大 |
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| 作者单位： | Key Laboratory of Liquid Structure and Heredity of Materials Ministry of Education Shandong University Ji'nan 2500 61 China，Key Laboratory of Liquid Structure and Heredity of Materials Ministry of Education Shandong University Ji'nan 2500 61 China，Key Laboratory of Liquid Structure and Heredity of Materials Ministry of Education Shandong University Ji’nan 2500 61 China |
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| 基金项目： | Project（2004BS05010） supported by Shandong Youth Doctoral Foundation, China |
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| 摘 要： | 1 Introduction SiC particle reinforced aluminum composites (SiCp/Al) possess excellent properties, e.g. high strength- to-mass ratio, high stiffness-to-mass ratio, good wear resistance and higher service temperature, therefore they are considered a kind…
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| 关 键 词： | SiCp/LD2复合材料 电子束焊接 分界面反应 TEM SEM XRD |
| 收稿时间： | 2005-10-18 |
| 修稿时间： | 2005-11-23 |
Electron beam welding of SiCp/LD2 composite |
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| CHEN Mao-ai,WU Chuan-song,ZOU Zeng-da. Electron beam welding of SiCp/LD2 composite[J]. Transactions of Nonferrous Metals Society of China, 2006, 16(4): 818-823. DOI: 10.1016/S1003-6326(06)60332-4 |
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| Authors: | CHEN Mao-ai WU Chuan-song ZOU Zeng-da |
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| Affiliation: | 1. Helmholtz-Zentrum Geesthacht, Institute of Materials Research, Materials Mechanics, Solid-State Joining Processes, Max-Planck-Str. 1, Geesthacht, Germany;2. Federal University of São Carlos, Materials Engineering Department, R. Washington Luís Km 235, SP 310 Sao Carlos, Brazil |
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| Abstract: | The 2 mm-thick SiCp/LD2 composite plates were electron beam welded at different heat inputs. The microstructures of welds were investigated by OM, TEM, SEM, and XRD, and the properties of welds were measured with MTS-810 testing system. The results show that the quantity and size of acicular Al4C3 precipitates (interfacial reaction product) decrease with the heat input decreasing. When the heat input lowers to 30 J/mm, the formation of needle-like Al4C3 can be prevented. The distributions of SiC in the fusion zones are more uniform than that in as-received composite. TEM analysis reveals that there are Al4C3 crystals on the surface of every survived particle, the needle-like Al4C3 observed under the optical microscope consists of many tabular Al4C3 crystals which have different orientations. With the increase of heat input, the fracture mechanism changes from ductile one to brittle one, the quantity of fractured particles on the fracture face decreases and the strength and ductility of the weld decrease. |
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| Keywords: | SiCp/LD2 composite electron beam welding interfacial reaction |
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