Investigation on mechanical properties and corrosion resistance of Ti-modified AA5083 aluminum alloy for aerospace and automotive applications

Abstract

Casting of aluminum with different concentration of alloying elements such as Mg, Mn (similar to that in AA5083) with additional percentages of 0.1, 0.2 and 0.3% Ti, are carried out using graphite crucible. The as-cast microstructure is modified by hot rolling to a thickness of ~ 2 mm. Mechanical and metallurgical and characterization of heat-treated thin sheets are carried out using tensile testing, hardness measurement, metallography, image analysis and optical microscope. By increasing the Ti content, the results show grain refinement and increase in the formation of Al3Ti which reflected positively on the mechanical properties. Specifically, Ultimate tensile strength is increased from 260 MPa (0 wt% Ti) to 345 MPa (0.3 wt% Ti) when using water quenching, 32.6% improvement for air cooling, and 23.3% for furnace cooling. Electrochemical corrosion behavior of heat-treated water quenched, air cooled and furnace cooled samples were tested in 3.5% NaCl solution. The results show that the heat-treated alloys have very good resistance against corrosion, while by increasing the Ti content, the corrosion rate increases due to the grain refinement phenomena.

Multiparameter signal-to-noise ratio optimization for end milling cutting conditions of aluminium alloy 5083

“…Thanks to their excellent corrosion resistance, weight ratios, and mechanical properties, aluminium alloys (AA) have been extensively utilized in the naval [1], aviation [2], and automotive industries [3,4]. Specifically, the AA5083 is known for its resistance to seawater corrosion [5,6] and tribological properties and is used broadly by the shipbuilding industry [7]. Therefore, the processing of AA5083 is of great interest in manufacturing industries, and it is processed by many cutting and diffusing-joining processes [8][9][10], for example, milling [11], turning [12], and friction stir welding [13,14].…”

Mechanical characteristics and electrochemical corrosion of NiCoCr alloys

“…Yan et al investigated the corrosion behavior of high manganese steels in a simulated marine splash zone by dry-wet cycle corrosion and electrochemical experiments [20]. Alghannam et al investigated the mechanical properties and corrosion resistance of Timodified A5083 Al alloy for aerospace and automotive applications [21]. Wang et al investigated the corrosion behavior of CoCrNi, CoCrNiFe, and CoCrNiFeMn alloys and their compositions in NaCl solution [22].…”