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Al-Zn-Mg-Er rare earth aluminium alloy

A technology of aluminum alloy and rare earth, applied in the field of metal alloy

Inactive Publication Date: 2003-08-20
BEIJING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

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  • Al-Zn-Mg-Er rare earth aluminium alloy
  • Al-Zn-Mg-Er rare earth aluminium alloy
  • Al-Zn-Mg-Er rare earth aluminium alloy

Examples

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example 1

[0014] Example 1: Al-Zn-Mg-Er alloy is prepared by ingot metallurgy method. First, high-purity Al (purity up to 99.99%) and pure Er (purity up to 99.9%) are used as raw materials, and the mixing method (mixed melting method) is adopted. Melting and casting in a vacuum induction furnace to prepare Al-6.2Er master alloy. Then 1584.9 grams of high-purity aluminum and 27.4 grams of Al-6.2Er master alloy were added to the graphite clay crucible, and melted in a crucible resistance furnace at a melting temperature of 780 ° C. After the high-purity aluminum and Al-6.2Er master alloy were completely melted, Add pure Zn113.3 grams in the melt, after fully stirring, then add pure Mg38.6 grams, after stirring, add 3 grams of hexachloroethane (C 2 Cl 6 ) for degassing and slag removal, and finally the melt is poured into a rectangular iron mold, and demolded after cooling for 3 minutes. The size of each ingot is 120×90×32 (mm 3 ).

example 2

[0015] Example 2: Al-Zn-Mg-Er alloy is prepared by ingot metallurgy. First, high-purity Al (purity up to 99.99%) and pure Er (purity up to 99.9%) are used as raw materials, and the mixing method (mixed melting method) is adopted. Melting and casting in a vacuum induction furnace to prepare Al-6.2Er master alloy. Then add 1543.7 grams of high-purity aluminum and 68.5 grams of Al-6.2Er master alloy into a graphite clay crucible, and melt in a crucible resistance furnace at a melting temperature of 780 ° C. After the high-purity aluminum and Al-6.2Er master alloy are completely melted, Add pure Zn113.3 grams in the melt, after fully stirring, then add pure Mg38.6 grams, after stirring, add 3 grams of hexachloroethane (C 2 Cl 6 ) for degassing and slag removal, and finally the melt is poured into a rectangular iron mold, and demolded after cooling for 3 minutes. The size of each ingot is 120×90×32 (mm 3 ).

example 3

[0016] Example 3: Al-Zn-Mg-Er alloy is prepared by ingot metallurgy method. First, high-purity Al (purity up to 99.99%) and pure Er (purity up to 99.9%) are used as raw materials, and the mixing method (mixed melting method) is adopted. Melting and casting in a vacuum induction furnace to prepare Al-6.2Er master alloy. Then add 1502.5 grams of high-purity aluminum and 109.7 grams of Al-6.2Er master alloy into a graphite clay crucible, and melt in a crucible resistance furnace at a melting temperature of 780 ° C. After the high-purity aluminum and Al-6.2Er master alloy are completely melted, Add pure Zn113.3 grams in the melt, after fully stirring, then add pure Mg38.6 grams, after stirring, add 3 grams of hexachloroethane (C 2 Cl 6 ) for degassing and slag removal, and finally the melt is poured into a rectangular iron mold, and demolded after cooling for 3 minutes. The size of each ingot is 120×90×32 (mm 3 ).

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Abstract

The present invention relates to metal alloy technology. The key of the present invention is the addition of RE element Er in the experiment determined amount 0.1-0.7 wt% into the alloy. During the preparation process of the Al-Zn-Mg-Er alloy, Al-Er intermediate alloy through vacuum smelting is added into Al-Zn-Mg alloy. The addition of Er can fine obviously the alloy grains, raise alloy strength greatly and suppress re-crystallization. In addition, Er is relatively cheap and its addition has no significant increase in production cost. On the basis of Al-Zn-Mg alloy as one of the typical industrial Al alloy, one series of Er containing Al-RE alloy may be developed and used in astronautics, aeronautics, traffic and other fields.

Description

1. Technical field [0001] The invention belongs to the technical field of metal alloys. 2. Background technology [0002] The results of the literature survey show that there are very few foreign studies on rare earth aluminum alloys, and the only reports are limited to the research on Sc-containing aluminum alloys. The domestic development and application of rare earth aluminum alloys started earlier, and large-scale research and development of rare earth aluminum alloys began in the late 1970s. At present, domestic research on the modification of various rare earth elements in Al-Si alloys has been carried out in depth. The research on the application of rare earths in electrical aluminum alloys and the application of rare earths in architectural aluminum profiles has also achieved good results, but the research on other aluminum alloys, especially deformed aluminum alloys, is mainly concentrated on La, Ce , Y and mixed rare earths. The research team found that the rare ...

Claims

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Application Information

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IPC IPC(8): C22C21/10
Inventor 聂祚仁金头男杨军军邹景霞徐国富付静波阮海琼左铁镛
Owner BEIJING UNIV OF TECH
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