Aluminum alloy sheet for lightweight car body

Abstract

The invention relates to an aluminum alloy panel for automobile body lightweight and a preparing method of the aluminum alloy panel. The aluminum alloy panel is characterized by comprising chemical components including, by mass percent, 1.2%-2.2% of Mg, 0.8%-1.5% of Si, 0.1%-0.3% of Fe, 0.2%-0.8% of Mn, 0.2%-0.5% of Cu, 0.05%-0.2% of Zr, 0.01%-0.5% of Cr, 0.05%-0.2% of La, smaller than or equal to 0.2% of Zn, smaller than or equal to 0.1% of Ti, smaller than or equal to 0.05% of each of the other impurity elements, and the balance Al, wherein the total content of the other impurity elements is smaller than or equal to 0.15%. According to the preparing method of the aluminum alloy panel for automobile body lightweight, the aluminum alloy panel is obtained through smelting, refining, casting, homogenizing, head cutting and face milling, hot rolling, intermediate annealing, cold rolling and solution treatment. The aluminum alloy panel for automobile body lightweight has high baking hardening performance and good forming performance, and the aluminum alloy panel has good comprehensive performance through reasonable optimization of the content of the elements in the alloy and the heat treatment technology.

Description

technical field

[0001] The invention relates to the technical field of aluminum alloy processing, in particular to an aluminum alloy plate for lightweight vehicle body suitable for logistics vehicle compartments. Background technique

[0002] While the automobile industry is booming all over the world, it also brings two serious social problems of environmental pollution and energy shortage. This prompts the automotive industry to focus on energy and environmental protection for sustainable development, and the advanced automotive material technology dominated by automotive lightweight is an important guarantee to achieve this goal. Therefore, lightweight has become the main direction of future automotive technology development. Automobile materials are an important factor affecting the weight of automobiles, and have a considerable impact on energy saving and pollution improvement. In the immature development of new energy technology, vehicle weight reduction is undoubtedl...

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