Present work aims at developing Magnesium based metal matrix composite (MMC) through in-situ reaction. In-situ generation of micro and nano particles in the Mg-melt is supposed to have a better bonding with the matrix. Ceric ammonium nitrate (CAN) is added to initial Magnesium melt (with an aim to generate CeO2 and MgO through in-situ reaction) at temperatures of 670 °C and 870 °C. The developed MMCs are solution treated to get rid of intermetallic. The nature of particles is explored with X-ray diffraction (XRD) and Energy dispersion spectroscopy (EDS). The morphology and sizes of particles are keenly jotted using scanning electron microscope (SEM). Mechanical responses of developed MMCs are recorded through Hardness, Compression and scratch tests. The compression fractured surfaces are analyzed with SEM and scratched samples are analyzed on 3 D optical profilometer to explore deformation behavior. The observations indicate the in-situ formation of CeO2, MgO and CeMg12 intermetallic phases in different types and sizes. Further, these particles are responsible for improved mechanical properties. The findings are supported by the contribution of different strengthening mechanisms.

中文翻译：

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通过原位微纳米增强开发镁基混合金属基复合材料

目前的工作旨在通过原位反应开发镁基金属基复合材料（MMC）。镁熔体中微米和纳米颗粒的原位生成应该与基体有更好的结合。在 670 °C 和 870 °C 的温度下，将硝酸铈铵 (CAN) 添加到初始镁熔体中（目的是通过原位反应生成 CeO2 和 MgO）。开发的 MMC 进行固溶处理以去除金属间化合物。通过 X 射线衍射 (XRD) 和能量色散谱 (EDS) 探索粒子的性质。使用扫描电子显微镜 (SEM) 敏锐地记录颗粒的形态和尺寸。已开发的 MMC 的机械响应通过硬度、压缩和划痕测试记录。用 SEM 分析压缩断裂表面，并在 3D 光学轮廓仪上分析划痕样品，以探索变形行为。观察结果表明不同类型和尺寸的 CeO2、MgO 和 CeMg12 金属间相的原位形成。此外，这些颗粒有助于改善机械性能。研究结果得到了不同强化机制贡献的支持。