An overview of nanotechnology and its potential risk

Nanotechnology has vastly been investigated due to its potential to increase the field of biotechnology and medical advances. Though, regulatory agencies such as FDA oversee the emerging field of nanotechnology through legislative arrangements. Mechanistic knowledge of nanostructure material behavior in the human body, animals, and environment is significant. This paper investigated the role of nanotechnology and its relevant development and improvement in science. Likewise, it exposes or brings to the limelight the threats associated with nanoparticles and their application in various fields of study, most especially the alarming effects on humans, animals, and the environment when inhaled or consumed in the form of nano-medicine, food, et

Bio-Waste as an Enhancement Additive for Nano-Flux Powder in Welding- An Overview

Oxyacetylene welding is quite a novel technique of connecting metals with each other that was developed to address the drawbacks of other welding techniques. The use of chemical compounds known as fluxes in the welding process does this, resulting in improved weld characteristics and increased weld depth. Recently, the use of agro-wastes as alternate fluxes has received keen interest from researchers. This is partly because agro-wastes recycling facilitates cleaner environments and could be cheaper. In this study, a critical review was carried out on some particular types and properties of welding. The review also considers the assessments carried out on welded joints and the use of agro-waste

Temperature and Die Angular Effect on Tensile Strength, Hardness, Extrusion Load and Flow Stress in Aluminum 6063 Processed by Equal Channel Angular Extrusion Method

Developing aluminum with good mechanical properties like hardness, tensile strength, and normal flow stress, Equal Channel Angular Extrusion (ECAE) method has been suggested as a suitable metal forming process. The load applied and extrusion temperature normally infl uences the flow stress behavior in extruded products and de- termine their mechanical properties. Consequently, how these factors affect mechanical behavior and flow stress of Al 6063 processed by ECAE was examined in this study. Extrusion temperatures were 350°C, 425°C, and 500°C with die angles of 130°, 140°, and 150°. 5 mm/s of ram speed was applied. Each extrudate’s tensile strength and hardness were measured using a Universal Testing Machine and a Rockwell hardness tester. Samples with equal dimensions and properties were also modeled using the Qform software at the extended die angle and temperature for proper analysis of flow stress in the extrudates. According to experimental results, the temperature had a greater effect on the tensile strength and hardness of the billet than the die angle. The extrudates’ grains also became finer as the billet temperature rose. Simulation findings showed that higher billet temperature led to a decrease in the extrudates’ flow stress. The simulation also demonstrated that billet temperature had a greater impact on extrusion load than die angle, with a maximum extrusion load of 5.5 MN being attained at 350 °C