Formation of Self-Assembled Monolayer and Characterization of AA7075-T6/B₄C Nano-ceramic surface composite using Friction Stir Processing

Abstract

In the present study, fabrication of surface composite using AA7075-T6 as a matrix material and boron carbide nanoparticles as reinforcement through Friction stir processing (FSP) has been done. FSP technique has been widely utilized for surface modification and the formation of composite material. The B 4 C nanoparticles size (<30 nm) as reinforcement were padded in dimension of 2 mm width and 1.5 mm depth groove of AA7075-T6 plate as a matrix material. The single-pass process executed using a square tool pin with tool rotation and traverse speed of 1000 rpm and 40 mm min −1 respectively. This research aims to observe and process Self-Assembled Monolayer (SAM), investigate the effect of the B 4 C nanoceramic particles on the AA7075-T6 and its mechanical properties of the nano-ceramic surface composite. Frictional and wear analysis investigations under various physical conditions have highlighted surface durability characteristics of the metal matrix composite of AA7075-T6. Microstructure results along with fractography-image highlight the homogeneous distribution of boron carbide nano-ceramic particle. Tensile test, Microhardness, microstructure, Field Emission Scanning-Electron Microscope (FESEM), and X-Ray Diffraction (XRD) analyzed the fabricated (Al+B 4 C) nano-ceramic surface composite. The fabricated nano-ceramic surface composite could be utilized in lightweight applications such as aerospace, marine, defence, and automotive industry.

Comparison of response surface methodology with artificial neural network for prediction of the tensile properties of friction stir-processed surface composites

“…SEM micrographs also shows that in processed matrices the grains are well refined and very few cavities are present. Similar results were reported by Butola et al 27 in their study. It can also be observed that grain size decreases with the increasing tool rotational speed up to 1200 r/min, and on further increasing the tool rotational speed nanoparticle reinforcement starts agglomerating.…”

Evaluation of microhardness and wear properties of Al 6063 composite reinforced with yttrium oxide using stir casting process

“…Composites are defined as a multiphase system that consists of two different groups of materials, one is the matrix and another is reinforcement, which is chemically and physically distinct and separated by interfaces (Kumar et al , 2018; Butola et al , 2020d). Nowadays, aluminium metal matrix composites (AMMCs) are finding wide application in automobile, marine, aerospace, defense and even in the nuclear industry (Butola et al , 2020a; Tyagi et al , 2021). AMMCs are preferred over aluminium alloys because of their excellent strength-to-weight ratio (Butola et al , 2020b).…”

Evaluating the Effect of Process Parameters on FSP of Al5083 Alloy Using ANSYS

“…Al, Mg, Steel, and Ti-based alloys are used for surface composites. Butola et al [44] successfully fabricated the SAM (Self-Assembled Monolayer) technique of Al-B4C nano-ceramic surface composite by implementing FSP. The mechanical properties of fabricated nano-ceramic surface composites on evaluation after one pass exhibited higher hardness, ultimate tensile strength, and finer grain structure in comparison to the base metal (BM).…”