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Scandium and strontium compound microalloyed high zinc 2099 type aluminium alloy and preparation method thereof

A technology of micro-alloying and aluminum alloy, applied in the field of Al-Cu-Li-Zn-Mg-Zr type aluminum alloy and its preparation, scandium and strontium composite micro-alloyed high-zinc 2099 type aluminum alloy and its preparation field, It can solve problems such as restricting development, and achieve the effect of improving comprehensive performance, maintaining weldability and anisotropy, and good corrosion resistance

Active Publication Date: 2010-09-22
JIANGSU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, so far, my country has not yet had a 2099-type aluminum alloy with independent intellectual property rights available, which has restricted the development of my country's aerospace, weaponry and other industries to a certain extent.

Method used

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  • Scandium and strontium compound microalloyed high zinc 2099 type aluminium alloy and preparation method thereof
  • Scandium and strontium compound microalloyed high zinc 2099 type aluminium alloy and preparation method thereof
  • Scandium and strontium compound microalloyed high zinc 2099 type aluminium alloy and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0024] Such as figure 1 , 2 shown

[0025] A scandium and strontium composite microalloyed high-zinc 2099 aluminum alloy, manufactured by the following method:

[0026] Take 28kg as an example.

[0027] First melt 22.884kg A00 grade pure Al (composition: 99.79Al, 0.14Fe, 0.04Si, the numbers before the element symbols in all the examples represent mass percentages) and then add 1.39kg Al-Cu master alloy (49.62Al, 50.12 Cu, 0.15Fe, 0.11Si) (Al-Cu master alloy can be directly purchased from the market according to the ratio, or can be prepared by conventional methods, the loss rate of Cu is about 6.25%), 0.303kgAl-Sr master alloy (89.86Al, 9.89Sr, 0.15Fe, 0.10Si) (Al-Sr master alloy can be directly purchased from the market according to the ratio, or can be prepared by conventional methods, the loss rate of Sr is about 40%), 0.99kg Al-Mn master alloy (89.73 Al, 10.02Mn, 0.19Fe, 0.06Si) (Al-Mn master alloy can be directly purchased from the market according to the proportion, ...

Embodiment 2

[0033] A scandium and strontium composite microalloyed high-zinc 2099 aluminum alloy, manufactured by the following method:

[0034] Take 28kg as an example.

[0035] First melt 22.611kg of A00 grade pure Al (composition: 99.79Al, 0.14Fe, 0.04Si) and then add 1.53kg of Al-Cu master alloy (49.62Al, 50.12Cu, 0.15Fe, 0.11Si) (Al-Cu master alloy can Purchase directly from the market according to the ratio, or prepare by conventional methods, the loss rate of Cu is about 6.25%), 0.445kg Al-Sr master alloy (89.86Al, 9.89Sr, 0.15Fe, 0.10Si) (Al-Sr master alloy Alloys can be directly purchased from the market according to the ratio, or can be prepared by conventional methods, the loss rate of Sr is about 40%), 0.997kg Al-Mn master alloy (89.73Al, 10.02Mn, 0.19Fe, 0.06Si) (Al- Mn master alloy can be directly purchased from the market according to the proportioning ratio, or can be prepared by conventional methods, the loss rate of Mn is about 10%), 0.544kg Al-Zr master alloy (95.69Al,...

Embodiment 3

[0040] A scandium and strontium composite microalloyed high-zinc 2099 aluminum alloy, manufactured by the following method:

[0041] Take 28kg as an example.

[0042] First melt 22.552kg A00 grade pure Al (composition: 99.79Al, 0.14Fe, 0.04Si) and then add 1.466kg Al-Cu (49.62Al, 50.12Cu, 0.15Fe, 0.11Si) master alloy (Al-Cu master alloy can Purchase from the market directly according to the ratio, or prepare by conventional methods, the loss rate of Cu is about 6.25%), 0.382kg Al-Sr master alloy (89.86Al, 9.89Sr, 0.15Fe, 0.10Si) (Al-Sr master alloy It can be directly purchased from the market according to the ratio, or can be prepared by conventional methods, the loss rate of Sr is about 40%), 0.68kg Al-Mn master alloy (89.73Al, 10.02Mn, 0.19Fe, 0.06Si) (Al-Mn The master alloy can be directly purchased from the market according to the ratio, or can be prepared by conventional methods, the loss rate of Mn is about 10%), 0.592kg Al-Zr master alloy (95.69Al, 4.11Zr, 0.20Fe, 0.10...

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Abstract

The invention discloses a scandium and strontium compound microalloyed high zinc 2099 type aluminium alloy and preparation method thereof. The aluminium alloy is mainly composed of the following elements by mass percent: 2.3-2.57% of copper (Cu), 1.86-1.96% of lithium (Li), 1.14-1.31% of zinc (Zn), 0.269-0.420% of magnesium (Mg), 0.219-0.321% of manganese (Mn), 0.0733-0.08% of zirconium (Zr), 0.0643-0.0943% of strontium (Sr) and 0.0433-0.079% of scandium (Sc), the balance is aluminium (Al) and less impurity elements. The preparation method of the alloy adopts the manufacturing method of intermediate alloy. The invention has simple method, the prepared alloy has low density, high rigidity and good corrosion resistance, and the invention can meet the requirement of the national aviation and weaponry fields to high performance aluminium alloy.

Description

technical field [0001] The invention relates to a nonferrous metal and a preparation method thereof, in particular to an Al-Cu-Li-Zn-Mg-Zr type aluminum alloy containing scandium and strontium and a preparation method thereof. Specifically, it is a scandium and strontium composite microalloyed high-zinc 2099 aluminum alloy and a preparation method thereof. Background technique [0002] Aluminum-lithium alloy has low density, high specific strength and specific stiffness, excellent low temperature resistance, good weldability, corrosion resistance and superplastic forming performance. Using it to replace conventional aluminum alloys can reduce the weight of components by 15% and increase rigidity. 15-20%, it is considered to be an ideal structural material in the aviation and aerospace industries. Among them, the 2099 aluminum-lithium alloy has significant weight reduction (replacing 2024 aluminum alloy with a weight reduction of 7-17%), excellent corrosion resistance, good ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C21/18C22C1/03C22B21/06C22F1/057
Inventor 许晓静王彬罗勇王宏宇吴桂潮潘励赵梓皓成城宋涛程晓农
Owner JIANGSU UNIV
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