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首页> 美国卫生研究院文献>Materials >Characterization of Aluminum-Based-Surface Matrix Composites with Iron and Iron Oxide Fabricated by Friction Stir Processing
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Characterization of Aluminum-Based-Surface Matrix Composites with Iron and Iron Oxide Fabricated by Friction Stir Processing

机译：搅拌摩擦法制备的含铁和氧化铁的铝基表面复合材料的表征

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摘要

Surface composite layers were successfully fabricated on an A 1050-H24 aluminum plate by dispersed iron (Fe) and magnetite (Fe3O4) particles through friction stir processing (FSP). Fe and Fe3O4 powders were packed into a groove of 3 mm in width and 1.5 mm in depth, cut on the aluminum plate, and covered with an aluminum sheet that was 2-mm thick. A friction stir processing (FSP) tool of square probe shape, rotated at a rate of 1000–2000 rpm, was plunged into the plate through the cover sheet and the groove, and moved along the groove at a travelling speed of 1.66 mm/s. Double and triple passes were applied. As a result, it is found that the Fe particles were homogenously distributed in the whole nugget zone at a rotation speed of 1000 rpm after triple FSP passes. Limited interfacial reactions occurred between the Fe particles and the aluminum matrix. On the other hand, the lower rotation speed (1000 rpm) was not enough to form a sound nugget when the dispersed particles were changed to the larger Fe3O4. The Fe3O4 particles were dispersed homogenously in a sound nugget zone when the rotation speed was increased to 1500 rpm. No reaction products could be detected between the Fe3O4 particles and the aluminum matrix. The saturation magnetization (Ms) of the Fe-dispersed nugget zone was higher than that of the Fe3O4-dispersed nugget zone. Moreover, there were good agreement between the obtained saturation magnetization values relative to that of pure Fe and Fe3O4 materials and the volume content of the dispersed particles in the nugget zone.
机译：通过分散的铁（Fe）和磁铁矿（Fe3O4）颗粒通过搅拌摩擦加工（FSP）成功地在A 1050-H24铝板上制造了表面复合层。将Fe和Fe3O4粉末填充到宽3毫米，深1.5毫米的凹槽中，在铝板上切割，然后用2毫米厚的铝板覆盖。以1000-2000 rpm的速度旋转的方形探针形状的摩擦搅拌处理（FSP）工具通过盖板和凹槽插入板中，并以1.66 mm / s的行进速度沿凹槽移动。进行两次和三次通过。结果，发现在三重FSP通过之后，Fe颗粒以1000rpm的旋转速度均匀地分布在整个熔核区中。 Fe颗粒和铝基质之间发生有限的界面反应。另一方面，当分散的颗粒变成较大的Fe3O4时，较低的转速（1000 rpm）不足以形成良好的熔核。当旋转速度提高到1500 rpm时，Fe3O4颗粒均匀地分散在合理的熔核区域中。在Fe3O4颗粒和铝基质之间未检测到反应产物。 Fe分散的金块区的饱和磁化强度（Ms）高于Fe3O4分散的金块区的饱和磁化强度。而且，所获得的相对于纯Fe和Fe3O4材料的饱和磁化强度值与熔核区中分散颗粒的体积含量之间存在良好的一致性。

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