Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

High-strength and heat-resisting rare earth aluminum alloy and preparing method thereof

An aluminum alloy and aluminum alloy material technology, applied in the field of alloys, can solve the problems of rare earth resource consumption, complex production equipment, unfavorable use, etc., and achieve the effect of good precipitation strengthening effect and good room temperature mechanical properties.

Inactive Publication Date: 2020-10-13
YANTAI NANSHAN UNIV
View PDF5 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] 1. Although the alloying method can further increase the strength of the aluminum alloy through precipitation strengthening, this method of increasing the strength is at the expense of the plasticity of the aluminum alloy;
[0006] 2. Although the alloying method of adding an appropriate amount of rare earth elements can significantly improve the strength of aluminum alloys, since rare earths are a relatively expensive resource, the cost of aluminum alloys produced by this method is extremely high and a large amount of rare earth resources are consumed. ;
[0007] 3. Although the large plastic deformation method can obtain a refined grain structure and improve the plasticity and strength of the aluminum alloy at the same time, the production equipment is complicated and expensive, and the production cycle is long
Such a processing method is not conducive to the application in actual engineering

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • High-strength and heat-resisting rare earth aluminum alloy and preparing method thereof
  • High-strength and heat-resisting rare earth aluminum alloy and preparing method thereof
  • High-strength and heat-resisting rare earth aluminum alloy and preparing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] Heat-resistant aluminum alloy, composed of the following components in mass percentage: 5% Zn, 2% Mg, 1% Cu, 0.15% Sm, the balance being Al and unavoidable impurities.

[0040] The preparation method of the above-mentioned heat-resistant aluminum alloy comprises the following steps:

[0041] (1) Put pure aluminum, pure zinc, pure magnesium, pure copper and the master alloy Al-10Sm in a drying oven at 200°C in proportion to dry and preheat for 1 hour;

[0042] (2) Melt the preheated pure aluminum, pure zinc, pure magnesium, and pure copper, add the master alloy Al-10Sm when heated to 700°C, then raise the temperature to 730°C for refining, remove the surface scum, and cool down to 710°C ℃ for 25 minutes to obtain the alloy solution;

[0043] (3) After semi-continuous casting of the alloy liquid obtained in step (2), an as-cast alloy is obtained;

[0044] (4) Perform homogenization heat treatment on the as-cast alloy obtained in step (3), the heat treatment temperature is...

Embodiment 2

[0050] The heat-resistant aluminum alloy is composed of the following components in mass percentage: 5.5% Zn, 3.5% Mg, 1.5% Cu, 0.15% Sm, the balance being Al and unavoidable impurities.

[0051] The preparation method of the above-mentioned heat-resistant aluminum alloy comprises the following steps:

[0052] (1) Put pure aluminum, pure zinc, pure magnesium, pure copper and the master alloy Al-10Sm in a drying oven at 190°C in proportion to dry and preheat for 1 hour;

[0053] (2) Melt the preheated pure aluminum, pure zinc, pure magnesium, and pure copper, add the master alloy Al-10Sm when heated to 710°C, then raise the temperature to 740°C for refining, remove the surface scum, and cool down to 720°C ℃ for 30 minutes to obtain the alloy solution;

[0054] (3) After semi-continuous casting of the alloy liquid obtained in step (2), an as-cast alloy is obtained;

[0055] (4) Perform homogenization heat treatment on the as-cast alloy obtained in step (3), the heat treatment ...

Embodiment 3

[0061] The heat-resistant aluminum alloy is composed of the following components in mass percentage: 6% Zn, 3% Mg, 2% Cu, 0.2% Sm, the balance being Al and unavoidable impurities.

[0062] The preparation method of the above-mentioned heat-resistant aluminum alloy comprises the following steps:

[0063] (1) Put pure aluminum, pure zinc, pure magnesium, pure copper and the master alloy Al-10Sm in a drying oven at 180°C for drying and preheating in proportion, and the preheating time is 2 hours;

[0064] (2) Melt the preheated pure aluminum, pure zinc, pure magnesium, and pure copper, add the master alloy Al-10Sm when heated to 720°C, then raise the temperature to 710°C for refining, remove the surface scum, and cool down to 700°C ℃ for 20 minutes to obtain the alloy solution;

[0065] (3) After semi-continuous casting of the alloy liquid obtained in step (2), an as-cast alloy is obtained;

[0066] (4) Perform homogenization heat treatment on the as-cast alloy obtained in step...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
particle sizeaaaaaaaaaa
tensile strengthaaaaaaaaaa
tensile strengthaaaaaaaaaa
Login to View More

Abstract

The invention relates to a high-strength and heat-resisting rare earth aluminum alloy containing rare earth samarium and a preparing method of the high-strength and heat-resisting rare earth aluminumalloy and belongs to the technical field of alloys. The aluminum alloy comprises the following components including, by mass percent, 5%-6% of Zn, 2%-3% of Mg, 1%-2% of Cu, 0.1%-0.2% of Sm and the balance Al and inevitable impurities. Various second phases, uniform and fine microstructures and weak base plane textures are evenly distributed in the alloy, and therefore the alloy can have high strength and high plasticity. The invention further discloses a preparing method of the high-strength and heat-resisting rare earth aluminum alloy material, nano-order and micron-order second phases and grains with the size being relatively fine are evenly distributed in the tissue of the prepared aluminum alloy, and the mechanical performance of the aluminum alloy is obviously improved.

Description

technical field [0001] The invention belongs to the technical field of alloys, and in particular relates to a high-temperature, high-strength aluminum alloy containing rare earth samarium and a preparation method thereof. Background technique [0002] As environmental problems become more and more obvious, the transportation industry pays more and more attention to controlling carbon dioxide emissions and improving fuel utilization. The characteristics of aluminum alloys such as low density, high specific strength and specific stiffness, corrosion resistance, and good processing performance are especially in line with the requirements for lightweight automobiles, so in the future aluminum alloys are bound to replace steel materials and become the second largest structural material. [0003] For many years, the main design idea of ​​high-strength aluminum alloys at home and abroad is to obtain high-strength aluminum alloy materials by adding rare earth and other alloying elem...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): C22C21/10C22C1/03C22F1/053
CPCC22C1/026C22C1/03C22C21/10C22F1/053
Inventor 程雪婷栾业波麻芳王莹莹李成
Owner YANTAI NANSHAN UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products