<p>Hybrid composites are an excellent substitute for the shortcomings of conventional composite materials, since they are lightweight, strong, and multifunctional. This paper presents a novel hybrid composite that is developed and designed for application in the aerospace and automotive industries. The current investigation evaluates the integration of Inconel 718 (IN718) and its reinforcement effect on the microstructure, as well as the mechanical properties of Al2024-ZrO2-IN718 hybrid MMC material. A constant level of ZrO<sub>2</sub> (4 wt.%) and the alloy percentages of IN718 were set to 2, 4, and 6 wt.%. The distribution of the discrete phases, the dispersions of reinforcement particles, and the nature of the interfaces were explained using high-resolution scanning electron microscopy (HR-SEM) examination and X-ray diffraction (XRD). The addition of IN718 enhances hardness due to its fine microstructure and resistance to loading. Mechanical strengths were improved significantly with the incorporation of IN718 up to 4 wt.%, with tensile strength increasing by 36.29%, and compressive strength increasing by 43.04%. Further increasing the IN718, there is a decline in both tensile and compressive strength. The impact energy of the Al-ZrO<sub>2</sub>-IN composites decreased gradually as the Inconel 718 content increased. The wear experiments demonstrated that the 4 wt.% IN718 composite has better wear resistance. The composite reinforced with 4 wt.% of IN718 has demonstrated the most outstanding mechanical and tribological properties.</p>

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Influence of Inconel 718 on Mechanical, Microstructure, and Tribological Analysis of Hybridized Al2024-ZrO2-IN718 Composites

  • S. Jagadeesh,
  • L. Balamurugan

摘要

Hybrid composites are an excellent substitute for the shortcomings of conventional composite materials, since they are lightweight, strong, and multifunctional. This paper presents a novel hybrid composite that is developed and designed for application in the aerospace and automotive industries. The current investigation evaluates the integration of Inconel 718 (IN718) and its reinforcement effect on the microstructure, as well as the mechanical properties of Al2024-ZrO2-IN718 hybrid MMC material. A constant level of ZrO2 (4 wt.%) and the alloy percentages of IN718 were set to 2, 4, and 6 wt.%. The distribution of the discrete phases, the dispersions of reinforcement particles, and the nature of the interfaces were explained using high-resolution scanning electron microscopy (HR-SEM) examination and X-ray diffraction (XRD). The addition of IN718 enhances hardness due to its fine microstructure and resistance to loading. Mechanical strengths were improved significantly with the incorporation of IN718 up to 4 wt.%, with tensile strength increasing by 36.29%, and compressive strength increasing by 43.04%. Further increasing the IN718, there is a decline in both tensile and compressive strength. The impact energy of the Al-ZrO2-IN composites decreased gradually as the Inconel 718 content increased. The wear experiments demonstrated that the 4 wt.% IN718 composite has better wear resistance. The composite reinforced with 4 wt.% of IN718 has demonstrated the most outstanding mechanical and tribological properties.