Influence of TiC nano‐particulates on the physical and mechanical properties of AA7150‐TiC MMC: Fabricated by advanced novel process. Issue 1 (8th May 2021)

• Record Type: Journal Article
• Authors: Madhukar, Pagidi; Selvaraj, N.; Kumar, G.B. Veeresh; Rao, C. S. P.; Mohammad, Faruq; Seetharam, R.; Chavali, Murthy
• Is Part Of: Nano select. Volume 3:Issue 1(2022)
• Page Start: 78
• Page End: 90
• Publication Date: 2021-05-08
• Subjects: AA7150 -- TiC -- nanocomposites, mechanical properties, microstructures, ultrasonics; Nanoscience -- Periodicals; Nanotechnology -- Periodicals; 620.5
• DOI: 10.1002/nano.202100094
• Languages: English
• ISSNs: 2688-4011

Abstract

Abstract: TiCnp reinforced AA7150 nanocomposites were prepared through a novel fabrication process (a combination of Vortex/Two‐step Stir Casting/Ultrasonication). The effect of TiCnp (0.5, 1.0, 1.5, and 2.0 wt.%) and ultrasonication on both microstructure behavior as well as mechanical properties were investigated at room temperature. Microstructural studies were analyzed through optical and scanning electron microscopy for grain size refinement, nanoparticle distribution and failure analysis. Grain refinement and homogeneous distribution of nanoparticles were achieved due to the ultrasonication effect. The mechanical properties increase with the increase of TiCnp wt.%. The optimal peak value at 175 MPa in tensile strength, 177.05 HV in microhardness, and 41.07 µm in grain size reduction were achieved at 1.5 wt.% of TiCnp content, which was around 48.31% and 17.4% enhanced in strength, in microhardness and 52.37% in grain size reduction. These peculiar achievements resulted from the homogeneous dispersion of TiC nano‐particulates in the nanocomposite material through a novel fabrication process. Abstract : A novel fabrication process was demonstrated combining vortex, double stir casting and ultrasonic probe assisted vibration treatment to enhance the homogeneous distribution of nanoparticles in AA7150‐TiCnp nanocomposites. TiC nanoparticle distribution improved the mechanical properties. This process proved uniform distribution and better mechanical properties as compared to the base alloy.