6063D-RE aluminum alloy and processing technique thereof

Abstract

The invention discloses 6063D-RE aluminum alloy and a processing technique thereof. The processing technique comprises the following steps of (1) putting aluminum ingots and Al-Si intermediate alloy in a furnace according to component design requirements, and adding magnesium ingots and Al-rare earth intermediate alloy and Al-Ti-B in sequence after the aluminum ingots and the Al-Si intermediate alloy are molten; (2) degassing, refining, stirring and slagging off, and then casting a cast rod of 100 mm*4000 mm at 730 DEG C by adopting a semicontinuous water cooling casting method; (3) cutting the cast rod into ingot blanks of 100 mm*390 mm, and performing homogenizing treatment on the ingot blanks at 560 DEG C for 6 h; and (4) finally, performing hot extrusion on forming materials by adopting a 6MN extruding machine. According to the processing technique, rare earth is added to the 6063D-RE aluminum alloy, and the magnesium and silicon contents are strictly controlled, so that the hot extrusion performance can be improved. After the rare earth is added to the 6063D-RE aluminum alloy, the shape of precipitation is improved, a certain refining effect is achieved on microstructures of casting ingots, a small quantity of granular rare earth phases are precipitated in the microstructures, and the overall mechanical properties of the alloy are increased.

Description

technical field [0001] The invention relates to the technical field of aluminum alloys, in particular to a 6063D-RE aluminum alloy and a processing technology thereof. Background technique [0002] Rare earth reserves are abundant in our country. Adding rare earths to 6063 aluminum alloy can improve the as-cast structure of the alloy and refine dendrites; help degassing and slag removal, and have a good purification effect on aluminum alloys; can improve Plasticity and thermal deformation capacity of 6063 aluminum alloy. Because rare earths have a good modification effect on 6063 aluminum alloy, rare earths have good application prospects, and have received extensive attention at home and abroad in recent years. However, most of the research stays in the laboratory stage, and there are not many studies on the application of rare earths in the industrial production of 6063 aluminum alloy. Based on this, a 6063D-RE aluminum alloy and its processing technology are studied. ...

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Problems solved by technology

However, most of the research stays in the laboratory stage, and there is not much research on the application of rare earths in the industrial production of 6063 aluminum alloy.

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