Analyzing the effect of WEDM parameters on machining of heat treated SiC and TiO2 reinforced LM25 aluminium alloy hybrid composite using Taguchi methodology

The current investigation, nano-multi-powder particles, 5 and 10 wt.% boron carbide (B4C) and graphite (Gr) are utilized as a reinforcement, and aluminium LM 25 alloy is used as a matrix. These hybrid nanocomposites were fabricated by a novel additive manufacturing method—selective laser melting. The specimen was carried out in a cylindrical size having 2 circular slots of dimension 14 and length 50 mm. The diverse SLM specimens focused on tribological properties of impact, creep, tensile, and hardness were carried out for the three specimens with same weight percentage of nanoparticles. The consequence of the reinforcement has been performed through microtensile and microhardness tests. The microtensile and microhardness properties are evaluated by microtensile test machine and Vickers hardness tester, and the specimen has been prepared as per ASTM E8 and ASTM E18 standards. Microtensile strength and hardness were augmented by the addition of B4C and graphite nanoparticles. The tensile strength and hardness values are 668.93 MPa and 739.16 MPa, and 193VHN and 206.79VHN, respectively. The result of the microstructure study shows homogeneous dispersion of B4Cnp-Grnp in the matrix material of the LM25 alloy. The FESEM image results of the ruined surface illustrate the addition performance of ductile fracture, brittle fracture, and ploughing of reinforced material. The consequences of the research enhanced tensile and hardness properties of composite with reinforcement added.

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Optical Microstructure, FESEM, Microtensile, and Microhardness Properties of LM 25-B4Cnp-Grnp Hybrid Composites Manufactured by Selective Laser Melting

The field of material science turned out to be very well known and even minded with a colossal desire for composite materials that display the positive attributes of both the parts. Worldwide there has been a lot of interest to tailor the structure and composites of materials on sizes of micrometer scale. Hence, a systematic review on the preparation, properties, and applications of composites is extremely important. So here, we took bamboo fiber from natural fiber and carbon fiber from artificial fiber and prepared fiber-reinforced composites with the help of resin polyester. The fiber-reinforced composites with rock dust as filler material have also prepared. By using hand lay-up process, we prepared these composites. The thus formed polymer matrix is tested under various mechanical properties like a tensile test, bending test. Then the properties of fiber composites are compared for natural and artificial fibers, and also, the properties of composites are calculated in which filler materials are added. Being environmentally friendly, applications of composites offer new technology and business opportunities for several sectors of the aerospace, automotive, electronics, and biotechnology industries.

V. Sankara Rao

Papers

Optical Microstructure, FESEM, Microtensile, and Microhardness Properties of LM 25-B4Cnp-Grnp Hybrid Composites Manufactured by Selective Laser Melting

Tensile Properties of Bamboo Fiber Filled with Rock Dust Filler Reinforced Hybrid Composites