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首页> 外文期刊>Journal of Alloys and Compounds: An Interdisciplinary Journal of Materials Science and Solid-state Chemistry and Physics >Fabrication of Al-20 wt%Si powder using scrap Si by ultra high-energy milling process
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Fabrication of Al-20 wt%Si powder using scrap Si by ultra high-energy milling process

机译：利用超高能研磨工艺用废硅制造Al-20 wt％Si粉

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摘要

In this study, microstructural evolution and mechanical properties of Al-20 wt%'Si and pure Al powders fabricated by ultra high-energy ball milling technique were investigated as a function of milling time. The microstructure and mechanical properties of the as-milled powders were examined by scanning electron microscope (SEM), energy dispersive spectrometry (EDS), X-ray diffracrometer (XRD) and Vickers hardness tester. SEM observation showed that the particle size increased at an early stage of milling, and then decreased drastically with further milling. XRD and cross-sectional EDS-mapping analyses revealed that Si particles were not dissolved but uniformly dispersed in the Al matrix in a milled state. Vickers hardness of both pure Al and Al-Si powder increases with milling time, which attributes to the grain size strengthening and dispersion strengthening.
机译：在这项研究中，研究了通过超高能球磨技术制备的Al-20 wt％'Si和纯Al粉的微观组织演变和力学性能随研磨时间的变化。通过扫描电子显微镜（SEM），能量色散谱仪（EDS），X射线衍射仪（XRD）和维氏硬度计测试了研磨后的粉末的微观结构和力学性能。 SEM观察表明，粒度在研磨的早期阶段增大，然后随着进一步研磨而急剧减小。 XRD和截面EDS映射分析显示，硅颗粒在研磨状态下不溶解，而是均匀分散在Al基体中。纯Al和Al-Si粉末的维氏硬度均随研磨时间而增加，这归因于晶粒尺寸的增强和分散的增强。

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