Abstract: The supersolidus liquid phase sintering characteristics of commercial 2024 pre-alloyed powder was studied at different sintering conditions. Pre-alloyed 2024 aluminum alloy powder was produced via air atomizing process with particle size of less than 100 µm. The solidus and liquidus temperatures of the produced alloy were determined using differential thermal analysis (DTA). The sinte...

An Aluminum based in-situ alloy reinforced with Mg2Si and Si hard particles produced by casting Al-6Si-0.5Mg alloy. The microstructure, tensile properties and fracture behavior of the alloy were investigated and the results show that the Mg2Si and Si hard particles produced by precipitation hardening have great effects. The homogenized (24hr at 500 o C) and solutionized (2hr at 540 o C) cast al...

Abstract—Friction stir welding is a modern and an environmentally friendly solid state joining process used to joint relatively lighter family of materials. Recently, friction stir spot welding has been used instead of resistance spot welding which has received considerable attention from the automotive industry. It is environmentally friendly process that eliminated heat and pollution. In this...

automotive and aerospace industries are required to light materials which have high properties. this causes to reduce production cost and fuel consumption. one of these advanced materials that have been attracted at these decades is particulate metal matrix nanocomposites. these materials have a combination of ductile matrix alloy properties and ceramic reinforcement nanoparticles. powder metal...

The fabrication of a composite membrane of nanoporous gold nanowires and anodic aluminum oxide (AAO) is demonstrated by the electrodeposition of Au-Ag alloy nanowires into an AAO membrane, followed by selective etching of silver from the alloy nanowires. This composite membrane is advantageous for flow-through type catalytic reactions. The morphology evolution of the nanoporous gold nanowires a...

In this study the Taguchi method, has been applied to optimize the heat treatment parameters for the corrosion resistance of AA6061 aluminum alloy. The experimental design consisted of four parameters (aging temperature, aging time, quenching environment and NaCl concentration), each containing three levels. Tafel polarization measurements were carried out to determine the corrosion resistance ...

A square sheet of aluminum foil is considered 2-dimensional because its mass is proportional to its diameter to the power of 2. A solid aluminum sphere is considered 3-dimensional because its mass is proportional to its diameter to the power of 3. An aluminum wire is considered 1dimensional because its mass is proportional to its length. The mass is proportional to length to the power of 1. Fro...

The increasing application of aluminum alloy, in combination with the growth complexity components, provides new challenges for numerical modeling sheet materials. material elastic–plasticity constitutive model is most important factor affecting accuracy finite element simulation. mixed hardening can more accurately represent real characteristics plastic deformation process, and property-relate...

In this study, property criteria for automotive Al-Mg-Si sheet alloys are outlined and investigated in the context of commercial alloys AA6016, AA6005A, AA6063 and AA6013. The parameters crucial to predicting forming behavior were determined by tensile tests, bending tests, cross-die tests, hole-expansion tests and forming limit curve analysis in the pre-aged temper after various storage period...

Taking Al–Li–S4–T8 Al–Li alloy as the study object, based on the stretching and deforming characteristics of sheet metals, this paper proposes a new approach of critical orange peel state characterizations on the basis of the precise measurement of stretch-forming surface roughness and establishes the critical criterion for the occurrence of orange peel surface defects in the stretch-forming pr...