The present study has envisaged an advance technique, gas injection bottom pouring vacuum stir casting process, for the casting of metal matrix composite (MMCs). This process has been eliminated several manual processing steps of conventional stir casting hence concerns about the workers’ safety and its bottom pouring mechanism & vacuum mould chamber improve the properties of the fabricated MMC. An Al/(10wt% Al₂O₃) MMC has been fabricated by the proposed technique and characterized for the mechanical and microstructural properties. An experimental plan based on Taguchi L₁₆ orthogonal array has also been used to investigate the factors affecting the wear behaviour. The fabricated Al-MMC has a density of 2.65 gm/cc, micro-hardness of 73.3 HV, tensile strength of 220 MPa and wear rate of 0.0137736 mm³/m, implying in substantial improvements from the matrix Al-alloy. A comparative study with the available literature has been carried out to investigate the possibilities of the proposed method in today’s manufacturing world. The results concluded that the fabricated MMC has significantly enhanced the properties of MMCs when compared to the existing casting techniques. From the results of present study, it has been suggested to employ the process in industrial & allied applications and especially in the research institutes where the researchers are not very skilled for the casting operations.

中文翻译：

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注气底浇真空搅拌铸造Al-金属基复合材料的优异性能。

本研究设想了一种先进的技术，即注气底部浇注真空搅拌铸造工艺，用于铸造金属基复合材料（MMC）。此过程已省去了常规搅拌铸造的几个手动处理步骤，因此对工人的安全性表示关注，其底部浇铸机制和真空模具腔改善了制造的MMC的性能。Al /（10wt％Al ₂ O ₃）MMC已通过提出的技术进行了制备，并表征了机械和微观结构性能。基于田口L ₁₆的实验计划正交阵列也已用于研究影响磨损性能的因素。制成的Al-MMC的密度为2.65 gm / cc，显微硬度为73.3 HV，抗张强度为220 MPa，磨损率为0.0137736 mm ³/ m，这意味着与铝合金基体相比有了实质性的改进。已经进行了与现有文献的比较研究，以研究提出的方法在当今制造业中的可能性。结果得出结论，与现有的铸造技术相比，制造的MMC显着增强了MMC的性能。根据目前的研究结果，已建议将该工艺应用于工业及相关应用，尤其是在研究人员对铸造操作不太熟练的研究机构中。