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首页> 外文期刊>Materials Science and Engineering >Investigation of nano-SiC_p effect on microstructure and mechanical properties of Al/TiH_2 foam precursor produced via ARB process
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Investigation of nano-SiC_p effect on microstructure and mechanical properties of Al/TiH_2 foam precursor produced via ARB process

机译：纳米SiC_p对ARB法制备Al / TiH_2泡沫前驱体组织和力学性能的影响

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摘要

In this study, a new type of hybrid composite which can be potentially used as a foam precursor was achieved by 0.75 TiH_2 and 0.75 nano-SiC_p addition (wt%) between 5 pure Al strips, followed by 6 accumulative roll bonding (ARB) cycles at room temperature. The effect of nano-SiC particles addition on the resulting microstructures as well as the corresponding mechanical properties of the products was investigated. Al/0.75 wt% TiH_2 sheets were also fabricated by the ARB process to compare with the hybrid nanocomposite specimens. Scanning electron microscopy (SEM) and related EDS color images revealed that applying 6 ARB cycles led to fairly homogeneous distribution of the TiH_2 and nano-SiC_p and elimination of porosity between the particles and matrix. It was also found that the tensile strength of the Al/TiH_2ano-SiC hybrid composite was about 1.27 times higher than that of the Al/TiH_2 precursor. SEM observation of fractured surfaces showed that the failure mechanism of the composite and nanocomposite was shear ductile rupture.
机译：在这项研究中，通过在5个纯铝带之间添加0.75 TiH_2和0.75纳米SiC_p（wt％），然后进行6个累积辊压粘合（ARB）循环，获得了一种新型的可作为泡沫前体的杂化复合材料。在室温下。研究了纳米SiC颗粒添加对所得微结构以及产物的相应机械性能的影响。还通过ARB工艺制备了Al / 0.75 wt％TiH_2片材，以与杂化纳米复合材料样品进行比较。扫描电子显微镜（SEM）和相关的EDS彩色图像显示，施加6个ARB循环可导致TiH_2和纳米SiC_p相当均匀的分布，并消除了颗粒与基体之间的孔隙。还发现，Al / TiH_2 /纳米-SiC杂化复合材料的拉伸强度比Al / TiH_2前体的拉伸强度高约1.27倍。 SEM观察断裂表面表明，复合材料和纳米复合材料的破坏机理是剪切韧性断裂。

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