Aluminum alloy material for manufacturing doors and windows

Abstract

The invention relates to aluminum alloy, and discloses an aluminum alloy material for manufacturing doors and windows. The aluminum alloy material includes, by mass, 4.30-5.80 parts of copper, 0.45-0.80 part of silicon, 1-5 parts of nickel, 2.30-4.30 parts of magnesium, 4.60-8.60 parts of zinc, 0.60-0.80 part of manganese, 0.20-0.40 part of iron, 0.04-0.06 part of titanium, 0.02-0.035 part of boron, 0.10-0.20 part of chrome, 0.03-0.05 part of strontium, 0.15-0.25 part of zirconium, 0.05-0.08 part of composite rare earth, and the balance aluminum and 0.09 part or less of impurities, wherein the composite rare earth includes, by mass, 17.00-18.60 parts of lanthanum, 12.40-15.30 parts of cerium, 9.80-11.70 parts of praseodymium, 12.30-14.20 parts of neodymium, 1.10-1.20 parts of ytterbium, 13.40-14.50 parts of thulium and the balance holmium. The aluminum alloy material for manufacturing doors and windows is high in intensity and yield strength, good in tensile strength, friction resistance and corrosion resistance, and long in fatigue life, and the problems that existing aluminum alloy materials are too hard, poor in plasticity, not enough in intensity and the like are solved.

Description

technical field [0001] The invention relates to an aluminum alloy, in particular to an aluminum alloy material used for making doors and windows. Background technique [0002] As people's living and home styles become more and more diverse, the demand for living and home styles has also increased. Among them, the improvement of building quality requirements is particularly prominent, and the requirements for building doors and windows are the most prominent. The doors and windows used today are made of metal, There are several kinds of plastic, wood, etc., so the material for making doors and windows has become the main research object. [0003] Material is an important pillar of today's science and technology, and it is particularly important because it is the foundation of human society development and all science and technology. The degree of technological development of materials will directly affect the transformation of productivity. The material science that has emerg...

AI Technical Summary

Problems solved by technology

Nickel has high corrosion resistance to acid and alkali, and has antirust and heat resistance at high temperature; adding Cu element can increase the strength and oxidation resistance of aluminum alloy and improve the service life; adding Mg element can improve its welding performance , increase its corrosion resistance and strength; and also add rare earth elements, which can not only refine the grain during heat treatment, increase its structural strength, but also improve its corrosion resistance and friction performance, and increase its service life. Reduce cost; although the aluminum alloy of this structure has strong corrosion resistance and friction performance, its strength is average, and the mass fraction of chromium and nickel added to the aluminum alloy material is too high, which makes the hardness of the material too high. As a result, the material becomes difficult to bend, and its yield capacity and tensile capacity will be reduced, resulting in the material being easily broken when a force is applied to the material, causing damage to the doors and windows