How heat treatment strengthens aluminium

How heat treatment strengthens aluminium

Another way to make aluminium stronger is through a heat treatment process. This process is applied to a subset of precipitation-hardenable aluminium alloys, a category that includes the 2XXX, 6XXX, 7XXX and 8XXX series. The precipitation hardening process involves a change in the solubility of the solids with heat, creating fine particles during the impurity phase within the lattice of metal atoms.

This change in the atomic composition of the metal structure helps to strengthen it. The metal must be heated for several hours for precipitation to occur. The generic name for this process is natural ageing and when combined with solid solution treatment it is known as STA. an alternative method of heat treating aluminium is annealing. This is particularly suitable for metals that have undergone strain hardening, a plastic deformation that results in a change in grain structure. Annealing restores the original (or near-primitive) grain structure of the alloy. This will allow the metal to be formed without excessive forces. The annealing process involves heating a previously work-hardened aluminium alloy to between 570°F and 770°F for anywhere from thirty minutes to three hours. The exact setting will depend on the alloy involved and the size of the workpiece.

All the above-mentioned is the basic introduction of how heat treatment strengthens aluminium. Haomei is a professional aluminum manufacturer, supplier and wholesaler, and we providealuminum sheets made of various aluminum alloy grades and tempers. Also, we are able to do customization according to your specification on size, colors and process method. If you want to know more, you can directly leave us your question clicking the message box to get a more accurate and effective reply. Should you be interested in buying Haomei aluminum products, please contact us.