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Two methods of strengthening aluminum plates
May 01, 2018

Different industries and fields have different performance requirements for aluminum plates. In the mechanical processing and other industries, the hardness of aluminum plates is particularly stringent. This requires hardening in the production process of aluminum plates to increase the hardness of aluminum plates and achieve the performance requirements. At present, there are two main processing methods, namely processing enhancement and solid solution strengthening. The following two methods are briefly introduced:


Processing reinforced aluminum plate


Processing hardening is also referred to as cold hardening, that is, cold deformation processing of aluminum plate below recrystallization temperature, such as forging, rolling, drawing, drawing, etc., cold deformation, aluminum internal dislocation density increases, and intertwined with each other and form a cell structure , hinder dislocation movement. The greater the degree of deformation is, the more serious the dislocation tangles are, the greater the deformation resistance and the higher the strength. The degree of hardening after cold deformation varies with the degree of deformation, deformation temperature, and the nature of the material itself. When the same material is cold-deformed at the same temperature, the greater the degree of deformation, the higher the strength and the lower the plasticity.


Solid solution strengthened aluminum plate


Adding certain alloying elements in pure aluminum to form infinite solid solution or limited solid solution can not only obtain high strength, but also obtain excellent plasticity and good pressure processing performance. The most commonly used alloying elements for solid solution strengthening in general aluminum are copper, magnesium, manganese, zinc, silicon, nickel and other elements. Generally, alloying of aluminum plates forms limited solid solutions. For example, binary alloys such as Al-Cu, Al-Mg, Al-Zn, Al-Si, and Al-Mn all form limited solid solutions, and all have large limits of solubility. Larger solid solution strengthening effect.


After strengthening the aluminum plate, its hardness performance will be significantly improved, but its hardness can not be improved; when the upper limit of hardness, no matter what method, can not continue to increase the hardness of the aluminum plate, can only choose the higher the hardness of the foundation Grade.


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