How To Determine Aluminum Alloy 6063 Composition
In order to ensure that doors, windows and curtain walls have high wind pressure resistance, assembly performance, corrosion resistance and decorative performance, the comprehensive performance requirements for aluminum alloy profiles are much higher than the industrial profile standards.
6063 aluminum alloy is a heat-treatable strengthening alloy with moderate strength in the AL-Mg-Si series. Mg and Si are the main alloying elements. The main work of optimizing the chemical composition is to determine the percentage content of Mg and Si.
The role of Mg and Si
Mg and Si form the strengthening phase Mg2Si. The higher the content of Mg, the more Mg2Si, the greater the heat treatment strengthening effect, and the higher the tensile strength of the profile, but the deformation resistance also increases, and the plasticity of the alloy decreases. , the processing performance is deteriorated, and the corrosion resistance is decreased.
The amount of Si should be such that all Mg in the alloy can exist in the form of Mg2Si phase to ensure that the role of Mg is fully utilized. As the Si content increases, the grains of the alloy become finer, the metal fluidity increases, the casting performance becomes better, the heat treatment strengthening effect increases, the tensile strength of the profile increases, the plasticity decreases, and the corrosion resistance deteriorates.
Determination of the amount of Mg2Si
The role of Mg2Si phase in the alloy Mg2Si can dissolve or precipitate in the alloy with the change of temperature, and exists in the alloy in different forms. The heat treatment strengthening effect of 6063 aluminum alloy increases with the increase of Mg2Si content.
When the amount of Mg2Si is in the range of 0.71% to 1.03%, the tensile strength increases approximately linearly with the increase of the amount of Mg2Si, but the deformation resistance also increases, and processing becomes difficult. The profile should not only have high strength, but also make the alloy easy to extrude, which is conducive to improving production efficiency.
For the 6063-T5 aluminum alloy, we take 200MPa as the design value. When the tensile strength is around 200MPa and the Mg2Si content is about 0.8%. For the 6063-T6 aluminum, the tensile strength is 230 Mpa and and the Mg2Si content is increased to 0.95% at this time.
6061 and 6063 aluminum are both Al-Mg-Si alloy. What is the 6061VS6063 aluminum strength? Welcome to contact us directly and leave message below to inquire 6xxx aluminum for ship building.
Original Source:https://www.marinealu.com/a/how-to-determine-aluminum-alloy-6063-composition.html
Tags: aluminum 6063 ,