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A corrosion-resistant and strengthenable rare-earth aluminum alloy

A technology of aluminum alloy and rare earth, applied in the field of rare earth alloy materials, to achieve good corrosion resistance and strengthenable effect

Active Publication Date: 2018-07-31
CHANGSHA HUAISHI NEW MATERIAL TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The existing Al-Mg-Si series aluminum alloys have many excellent properties, but it is still difficult to meet people's new and more stringent requirements for this series of aluminum alloys in some special environments and conditions, such as good deformation ability for deep punching processing, higher strength and more outstanding corrosion resistance to ensure the safe application of materials, etc.
In the prior art, there have been many records about strengthening aluminum alloys alone with Sc and Er, but so far, there have been no reports on strengthening aluminum alloys by adjusting the components and matching the appropriate ratio of Sc and Er

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  • A corrosion-resistant and strengthenable rare-earth aluminum alloy
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Embodiment Construction

[0034] The contents of the alloy elements in the 1-6# alloys are shown in Table 1. The raw materials used are all pure metals or intermediate alloys with more than 99.8%, and the ingots are obtained by smelting. The ingots were analyzed by impurity elements, and the results are shown in Table 2. When the ingot is softened, the softening process is shown in Table 3, the cooling method is air cooling, and the softened state of the sample is recorded as O state. When the ingot is strengthened and toughened, the softening treatment process shown in Table 3 is followed by artificial aging treatment. The artificial aging treatment process is shown in Table 4, and the sample state is recorded as T6 state. The performance test results of the alloy in different heat treatment states are shown in Table 5. Among them, the samples in the T62 state were subjected to the salt spray test in the YL-40C salt spray test chamber. Corrosion ω is the weight loss of the sample before and after co...

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Abstract

The invention relates to the field of rare earth alloy materials, in particular to an anti-corrosive reinforced rare earth aluminum alloy. According to the rare earth aluminum alloy designed by the invention, the anti-corrosive reinforced aluminum alloy with good corrosion resistance and excellent mechanical performance is obtained through the synergistic effect of rare earth elements Sc and Er in appropriate proportion and appropriate dosage according to the characteristics and effects of conventional metal elements in alloy. The tensile strength of Al-Mg-Si series aluminum alloy designed by the invention can reach up to 224.6 MPa, the percentage elongation after fracture is 19.3%, and the anti-corrosive rate is 2.34*10<5> g / mm<2>. The anti-corrosive reinforced rare earth aluminum alloy is reasonable in component design, high in cost performance, simple in preparation process and beneficial to large-scale industrial application.

Description

technical field [0001] The invention relates to the field of rare-earth alloy materials, in particular to a corrosion-resistant and strengthenable rare-earth aluminum alloy. technical background [0002] my country is rich in aluminum resources. Aluminum and aluminum alloys have high strength and low density, good thermal and electrical conductivity, and are easy to form dense aluminum oxide films to obtain good corrosion resistance. Aluminum and aluminum alloys are widely used in industry. Al-Mg-Si aluminum alloy not only has good manufacturability, excellent corrosion resistance and moderate strength and toughness, but also is easy to oxidize and color, and can be widely used in industrial profiles and architectural profiles. [0003] The existing Al-Mg-Si series aluminum alloys have many excellent properties, but it is still difficult to meet people's new and more stringent requirements for this series of aluminum alloys in some special environments and conditions, such a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C21/08C22F1/047
CPCC22C21/08C22F1/047
Inventor 邱从章邱志勇
Owner CHANGSHA HUAISHI NEW MATERIAL TECH CO LTD
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