This study presents microstructural and mechanical investigation on friction stir welding of composites fabricated through processing a high strength Al–Zn–Mg–Cu alloy by utilizing hybrid reinforcement. Surface (SCs) were via FSP, sliced to the processed thickness cut-apart longitudinal axis SCs. They subsequently; butt welded employing varied tool rpm (560–900 rpm). The properties, analysis micro-hardness profile was obtained for welds. Results revealed that in comparison SC samples...

The present investigation deals with a comprehensive study on the production of aluminum based alloys incorporation different alloying elements and their effect its electrical conductivity mechanical properties. Casting pure concentration combinations additives such as cupper (Cu), magnesium (Mg) silver (Ag) were carried out using graphite crucible. as-cast microstructure was modified by hot rolling followed heat-treated conditions viz., annealing, normalizing, quenching, age hardening....

Casting of aluminum with different concentration alloying elements such as Mg, Mn (similar to that in AA5083) additional percentages 0.1, 0.2 and 0.3% Ti, are carried out using graphite crucible. The as-cast microstructure is modified by hot rolling a thickness ~ 2 mm. Mechanical metallurgical characterization heat-treated thin sheets tensile testing, hardness measurement, metallography, image analysis optical microscope. By increasing the Ti content, results show grain refinement increase...

Epoxy coating formulations containing 1%, 3%, and 5% SiO2 nanoparticles were produced applied on a mild steel substrate to achieve the objective of high performance corrosion resistance. The electrochemical impedance spectroscopy (EIS) technique was employed measure anticorrosive properties coatings. tests performed by exposing coated samples in solution 3.5% NaCl for different periods time, varied from 1 h up 30 days. Fourier transform infrared (FT-IR) X-ray diffraction (XRD) analyses...

The current work is in continuation of our previous where we reported changes the properties epoxy coatings using two different types hardener stoichiometric ratios. best results-oriented coating stoichiometry was then taken this research for further modification with incorporation 1, 2 and 3 wt.% micro aluminium (Al) pigments designed carbon steel panels. After 7 d curing, coated panels were characterized X-ray diffraction (XRD), (SEM) scanning electron microscopy, (TGA) thermogravimetric...

The potential of ecofriendly biochar, a carbon-rich byproduct biomass pyrolysis, as low-cost solid lubricating filler for low-density polyethylene (LDPE) sustainable biocomposites is investigated in this work. Tensile strength, hardness, thermogravimetric analysis (TGA), melting flow index (MFI), tensile test, flexural and frictional tests were used to characterize the biocomposites’ mechanical, thermal, tribological properties. Energy-dispersive X-ray spectroscopy (EDS) was assess chemical...

The electrochemical corrosion behavior of laser welded 2205 duplex stainless-steel in artificial seawater environment (3.5% NaCl solutions) with different acidity and alkalinity conditions (different pH values) was investigated using techniques. Namely, capacitance measurements (Mott–Schottky approach), impedance spectroscopy potentiodynamic polarization measurements. formation pitting on the exposure surfaces tested samples confirmed by characterizing surface morphology field emission...

The corrosion behavior of newly fabricated γ-TiAl alloy was studied using electrochemical impedance spectroscopy (EIS) and cyclic potentiodynamic polarization (CPP) techniques. produced from powder with compositions Ti-48Al-2Cr-2Nb processed electron beam melting (EBM) technique. the bulk investigated in 1 M HCl solution for different immersion times temperatures. experimental results suggest that exhibits good resistance to acid at room temperature. also indicate an increase time...

Welding parameters can greatly affect the final product. In this study, there was a variation given on pulse energy, i.e., heat input parameters. The microstructure analyzed and presented in relation to efficiency of corrosion. microstructural study showed changes fusion zone (FZ) heat-affected (HAZ) with an increase energy. development prominent austenite process weld material had prolonged effect its corrosion resistance property. Electrochemical impedance spectroscopy (EIS)...

The optimization of two different types hardeners, namely polyaminoamine adduct (Aradur 450 BD) and polyamidoamine 3282 BD), with diglycidyle ether bisphenol-A (DGEBA) epoxy resin was carried out. Three stoichiometries PA to the fabricate E-0, E-1, E-2 coating samples other three F-0, F-1, F-2 were coated on mild steel panels. All characterized by scanning electron microscopy (FE-SEM), Fourier transform infrared spectroscopy (FTIR), thermo-gravimetric analysis (TGA), nanoindentation...

Dual-phase (DP) steels consist of a ferritic matrix dispersed with some percentage martensite, which gives the material good combination strength and ductility, along capacity to absorb energy enhanced corrosion protection properties. The purpose this work was study microstructural behavior (mainly pitting galvanic corrosion) DP steel compared that conventional rebar. To obtain steel, low-carbon were heat-treated at 950 °C for 1 h then intercritically annealed 771 75 min, followed by...

This research work highlights the tribomechanical investigations of using a low loading fraction two ceramics combinations, Alumina (Al2O3) and Silicon Carbide (SiC) as reinforcement for Low-density Polyethylene (LDPE) matrix. The hybrid additives with different weight percentages (0.1 + 0.1, 0.25 0.5 wt%) were mixed LDPE matrix degree homogeneity was controlled double-screw extruder prior to fabricating composite samples via injection molding machine. nanoparticles fillers characterized by...

Reinforced steel bars (rebar) are extensively used in construction, and the main challenge is minimizing corrosion due to oxide or passive layer breakdown. In contrast, dual-phase (DP) has good resistance. This study investigated effect of Cl− ions on electrochemical behavior DP rebar conventional rebar. Corrosion studies measurements were conducted simulated concrete pore solution with different concentrations ions. Microstructure analysis, surface morphology corroded characterization...

Owing to their superior biocompatibility, titanium and its alloys are often the first choice for implant materials in biomedical applications, especially dental bone repairs (orthodontics prosthodontics). Titanium has low density shows good mechanical chemical properties. Although Ti-6Al-4V alloy exhibits excellent corrosion resistance properties, metal ions released during likely induce aseptic loosening long-term implantations. In present study, was subjected two specific heat treatments,...

Graphene and its nanocomposites are showing excellent potential in improving the catalytic performances of different materials. However, synthetic protocol form, such as graphene oxide (GRO) or highly reduced (HRG), influence efficiencies. Here, we present, a facile synthesis ZrOx-MnCO3-based [(1%)ZrOx–MnCO3/(x%)GRO] their outcome an oxidation catalyst for alcohol under mild conditions using O2 clean oxidant. The ZrOx–MnCO3/GRO prepared by incorporating GRO to pre-calcined ZrOx-MnCO3 ball...

Hydrothermal liquefaction of rice straw and cow dung after anaerobic digestion towards sustainable waste utilization for bio-oil production.

The high cost of Pt-based electrode materials limits the commercialization fuel cells and their subsequent application in renewable energy production. It is thus necessary to develop economical, high-performance electrodes alongside biofuels reduce pollution associated with production energy. Tin dioxide–copper foil (SnO2–Cu) are herein developed using an electrodeposition process. Cyclic voltammetry, chronoamperometry, potentiodynamic polarization methods used electrochemically characterize...

The manufacturing of nanocrystalline aluminum using mechanical alloying technique after different ball milling times, namely 1, 3, and 5 h was reported. effect period on the corrosion behavior manufactured in 4.0 wt.% sodium chloride (NaCl) solutions carried out. measurements were studied potentiodynamic polarization (PP), chronoamperometric current-time at constant potential value (CCT), electrochemical impedance spectroscopy (EIS) techniques. It has been found that increase time from 1 to...

In this investigation, the focus is on improving quality of Al 5083 alloy by equal-channel angular pressing (ECAP) innovation. Equal-channel one best technologies for converting macro grain into ultra-fine-grained structure. Grain structure which finer increases strength material. work, a severe plastic deformation using up to 3 passes was given Al5083 path BC at room temperature. The evolution microstructure studied an optical microscope. Tensile studies were also done. Both hardness...

In this study, rice straw (RS) and cow dung (CD) waste were hydrothermally processed for the recovery of bio-oil biochar. The hydrothermal experiments performed in a 5 L capacity reactor under following process conditions: temperature (240–340 °C), solvent to biomass ratios 1:1, 1:2, 2:1, 1:3 3:1, time 1 h pressure 15 bar. HTL products characterized via FTIR, SEM GC–MS (gas chromatography mass spectrometry). It was seen that maximum yield 32.5 wt% biochar 18.5 2:1 RS:CD mixture at 320 °C....

The present study investigates the electrochemical corrosion response and tribo-behavior of 304L 316L stainless steel welded by gas metal arc welding (GMAW), which offered a high deposition rate. During this research, metallurgically prepared samples were subjected to tribological test test. wear results favorable for steel, it showed lower coefficient friction than specimen. These also underwent characterization studies, such as X-ray diffractometry (XRD) scanning electron microscopy (SEM),...

The effect of incorporating limited-diffusivity elements such as Fe and Ti on thermal stability the nanocrystalline Al alloy was investigated. Al−10wt.%Fe Al−10wt.%Fe−5wt.%Ti alloys were fabricated. initial mixtures powders milled for 100 h in vacuum. bulk samples fabricated from a high frequency induction heat sintering (HFIHS) system. sintered characterized by X-ray diffraction (XRD), Vickers microhardness, field emission scanning electron microscopy (FESEM-EDS) transmission (TEM)....