Aluminum lithium alloy spectrum standard sample containing silver, and preparation method thereof

A technology for spectral standard samples and aluminum-lithium alloys, which is applied in the field of silver-containing aluminum-lithium alloy spectral standard samples and its preparation, can solve the problems of inability to prepare aluminum-lithium alloy spectral standard samples, high Ag density, etc., and avoid sinking to the bottom Phenomenon, easy to stir, and uniform ingredients

Active Publication Date: 2011-03-09
SOUTHWEST ALUMINUM GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The inventor considers that because the density of Ag is relatively large, it is easy to precipitate, and when using the method in the above-mentioned report to prepare the alloy standard sample, the Ag element is added thereto, and the silver-containing aluminum-lithium alloy spectral standard sample cannot be prepared equally.

Method used

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  • Aluminum lithium alloy spectrum standard sample containing silver, and preparation method thereof
  • Aluminum lithium alloy spectrum standard sample containing silver, and preparation method thereof
  • Aluminum lithium alloy spectrum standard sample containing silver, and preparation method thereof

Examples

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preparation example Construction

[0034] The invention provides a method for preparing a silver-containing aluminum-lithium alloy spectral standard sample, comprising:

[0035] Step a) under the protection of argon, add Al, Cu, Ti and Zr into the smelting furnace, and heat to melt to obtain the first alloy melt;

[0036] Step b) taking part of the first alloy melt, adding Ag into the part of the first alloy melt, stirring to obtain a mixed solution, then adding the mixed solution into a melting furnace, and stirring to obtain a second alloy melt, The volume of the part of the first molten alloy is 0.1-1L;

[0037] Step c) adding Mg and Li to the second alloy melt to obtain a third alloy melt, and covering the third alloy melt with lithium chloride and / or lithium fluoride;

[0038] Step d) casting the third alloy melt by using a batch semi-continuous casting method under stirring conditions to obtain an ingot;

[0039] Step e) performing homogenization treatment on the ingot to obtain a silver-containing alum...

Embodiment 1

[0055] Preparation of silver-containing aluminum-lithium alloy spectroscopic standard sample E3101

[0056] Step a) Under the protection of argon, the temperature of the furnace is raised to 400°C for drying, and then high-purity aluminum is added to the smelting furnace according to the composition percentage in Table 1. After melting, Al, Cu, Ti and Zr is added in the smelting furnace and heated to melt to obtain the first alloy melt;

[0057] Step b) After adjusting its chemical composition to meet the design requirements, take 500ml of the first alloy melt with a sample spoon, add the calculated amount of Ag into the sample spoon at 820°C, stir, and place the obtained product in a melting furnace. stir;

[0058] Step c) adding Mg and Li respectively to the second alloy melt to obtain a third alloy melt, covering the third alloy melt with lithium chloride and lithium fluoride, and sampling after passing through the target slag and stirring Analysis, and then adjust its ch...

Embodiment 2～5

[0064] The preparation method of Examples 2-5 is the same as that of Example 1, see Table 1 for specific composition percentages, and prepare silver-containing aluminum-lithium alloy spectral standard samples E3102-E3105. .

[0065] The composition percentage of the aluminum-lithium alloy spectral standard sample containing silver in the embodiment 1~5 of table 1

[0066]

[0067] The standard samples prepared in Examples 1-5 were tested. Such as figure 1 Shown is the optical microscope image of the standard ingot E3103 prepared in Example 3. The structure of the standard ingot is dense and uniform, without defects such as pores, looseness and inclusions, and the composition is uniform.

[0068] The uniformity of the standard sample is one of the most critical indicators of the standard sample. According to GB / T15000 "Standard Sample Work Guidelines" and YS / T409 "Standard Sample Technical Specifications", random sampling is tested by the range method, and the results of ...

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Abstract

The embodiment of the invention discloses a preparation method of an aluminum lithium alloy spectrum standard sample containing silver. In the preparation method of the invention, the Ag is added independently and the mode of stirring is adopted during the adding process of the Ag. The preparation method comprises the following steps: getting a part of a first alloy melt, adding the Ag into the part of the first alloy melt, and stirring to obtain a mixed melt; putting the mixed melt into a smelting furnace, and stirring to obtain a second alloy melt, wherein the volume of the part of the first alloy melt is 0.1 to 1 L. Due to the fact that the part of the first alloy melt has small volume, the stirring is easily, thereby facilitating the mixing of the Ag and the part of the first alloy melt; in addition, the casting is performed under the condition of stirring, thereby avoiding the occurrence of the precipitation phenomenon and ensuring the uniformity of the cast ingot composition. The experimental result indicates that the aluminum lithium alloy spectrum standard sample containing the silver of the invention is the 2195 aluminum lithium alloy spectrum standard sample, and the composition is uniform.

Description

technical field [0001] The invention relates to the technical field of metal materials, in particular to a silver-containing aluminum-lithium alloy spectral standard sample and a preparation method thereof. Background technique [0002] Lithium is the lightest element in the world. Adding metallic lithium as an alloying element to metallic aluminum forms an aluminum-lithium alloy. Aluminum-lithium alloy has the characteristics of low density, high specific strength, high specific stiffness, good heat resistance and stress corrosion resistance. It is the fastest-growing field of aviation metal materials in the past ten years. be widely used. [0003] Aluminum-lithium alloys have gone through a long period of development. In 1924, Germany successfully developed an aluminum-zinc alloy containing 0.1wt% lithium, which had better mechanical properties than the widely used aluminum-magnesium alloys at that time; The X-2020 aluminum alloy containing 1.1wt% lithium is used on the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C21/00C22C1/02G01N1/28
Inventor 朱学纯陈瑜吴洪军韦志宏杨建军刘功达胡永利彭速中刘智钟玲彭斌谭龙
Owner SOUTHWEST ALUMINUM GRP
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