Alloying Elements Effects on Electrical Conductivity and Mechanical Properties of Newly Fabricated Al Based Alloys Produced by Conventional Casting Process

Abstract

The present investigation deals with a comprehensive study on the production of aluminum based alloys with the incorporation of different alloying elements and their effect on its electrical conductivity and mechanical properties. Casting of pure aluminum with different concentration and combinations of alloying additives such as cupper (Cu), magnesium (Mg) and silver (Ag) were carried out using a graphite crucible. The as-cast microstructure was modified by hot rolling followed by different heat-treated conditions viz., annealing, normalizing, quenching, and age hardening. The mechanical properties and electrical conductivity of the produced heat-treated alloys sheets under various processing conditions were carried out using tensile testing, hardness, and electrical resistivity measurements. It was found that by increasing the alloying elements content, yield strength results increased significantly by more than 250% and 500% for the as rolled and 8 h aged Al-Cu-Mg alloy, respectively. On the other hand, the electrical conductivity reduces slightly with −14.6% and −16.57% for the as rolled and 8 h aged of the same Al-Cu-Mg alloy, respectively.

Influence of Milling Route on the Corrosion Passivation of Al-2%SiC Nanocomposites in Chloride Solutions

“…This behavior is due to the dissolution of Al that is in the nanocomposite according to the aforementioned reaction (Equation ( 6)). The continuous increase of current for the first nanocomposite is due to the occurrence of pitting corrosion as a result of the attack of the chloride solution towards the surface of the nanocomposite and the formation of aluminum chloride complex, AlCl4 − , which diffuses into the balk solution [17,25,26,[34][35][36][37][38][39]:…”

“…Considerable works have been also carried out on the corrosion of Al composites in corrosive environments such as sodium chloride solutions including the reporting of the effect of nano-ceramic additives [10][11][12][13][14][15][16][17][18]. The corrosion susceptibility, pitting potential and pitting morphology of Al matrix composites in the chloride (NaCl) solutions were also reported [14][15][16][17][18]. The corrosion of grade A356 Al alloy that was reinforced with nano-Al 2 O 3 particulates in 3.5% NaCl solution has been reported [11].…”

“…It was found that milling the Al-Zn/Al 2 O 3 composite increases the resistance towards corrosion of the composite as compared to the same composite without milling [11]. The processing method for the fabrication of the Al-based MCCs has been reported to affect and alter the microstructure as well as the corrosion resistance [17][18][19].…”

Ameliorative Corrosion Resistance and Microstructure Characterization of 2205 Duplex Stainless Steel by Regulating the Parameters of Pulsed Nd:YAG Laser Beam Welding

“…The ferrite phase precipitation of chromium nitride has a negative influence on toughness and corrosion behavior [3,[11][12][13]. Usually, these precipitations are of the Cr2N form and can cause chromium reduction in the ferrite grain boundaries, which eventually contributes to a reduction in local pitting resistance [13][14][15]. The benefits of using laser welding methods for welding duplex stainless steel are high welding speed, low distortion, and gap bridge capacity.…”

Role of NaCl, CO2, and H2S on Electrochemical Behavior of 304 Austenitic Stainless Steel in Simulated Oil Industry Environment

“…CO 2 corrosion sensitively depends on alloy composition, environmental factors such as temperature, partial CO 2 pressure, flow conditions, and protective corrosion scales in the processing of geothermal energy. [18][19][20][21][22][23][24][25][26]. The concentration of H 2 S has a significant impact on the defensive ability of the sulfide film formed.…”