Magnesium lithium alloy, preparation method thereof and preparation method for magnesium lithium alloy plate

A magnesium-lithium alloy and alloy technology, applied in the field of ultra-light and high-strength metal alloys, can solve the problems of poor thermal stability and over-aging of β-single-phase magnesium-lithium alloys, avoid oxidation inclusions and solvent inclusions, control production costs, and improve The effect of heat resistance

Active Publication Date: 2014-10-15
ANHUI JIANGHUAI AUTOMOBILE GRP CORP LTD
View PDF6 Cites 9 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a magnesium-lithium alloy and its preparation method that can overcome the poor thermal stability of β-single-phase magnesium-lithium alloys and the problems of overaging, and to prepare magnesium-lithium alloy plates using the magnesium-lithium alloy Methods

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
  • Magnesium lithium alloy, preparation method thereof and preparation method for magnesium lithium alloy plate
  • Magnesium lithium alloy, preparation method thereof and preparation method for magnesium lithium alloy plate
  • Magnesium lithium alloy, preparation method thereof and preparation method for magnesium lithium alloy plate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] Component distribution (weight percent): 14% Li; 3.0% Al; 1.0% Sr; 0.3% Sc; 0.4% Zr;

[0048] (1) Industrial pure Mg ingots (Shanxi Wenxi Yinguang Magnesium Industry Group Company, purity ≥ 99.5%), industrial pure Al ingots (Shanghai Yuhang Aluminum Company, purity > 99.7%), pure Li ingots (Guangzhou Jingyuan Trading Co., Ltd., purity > 99%), Mg-10Sc alloy (Yueyang Yuhua Metallurgical New Material Company, where the value is mass percent), Mg-30Zr alloy (Yueyang Yuhua Metallurgical New Material Company, where the value is mass percent ) and Mg-15Sr alloy (Yueyang Yuhua Metallurgical New Materials Co., Ltd., wherein the numerical values ​​are mass percentages) are weighed according to the above-mentioned composition ratio;

[0049] (2) Heat pure Mg ingots, pure Li ingots, and pure Al ingots in a vacuum resistance furnace (Shenyang Vacuum Technology Research Institute, VIF type) to 720 ° C for melting, then add Mg-10Sc alloy, Mg-30Zr alloy and Mg- For 15Sr alloy, before ...

Embodiment 2

[0059] Component distribution (weight percent): 12% Li; 5.0% Al; 0.8% Sr; 0.6% Sc; 0.4% Zr;

[0060] (1) Industrial pure Mg ingots (Shanxi Wenxi Yinguang Magnesium Industry Group Company, purity ≥ 99.5%), industrial pure Al ingots (Shanghai Yuhang Aluminum Company, purity > 99.7%), pure Li ingots (Guangzhou Jingyuan Trading Co., Ltd., purity > 99%), Mg-10Sc alloy (Yueyang Yuhua Metallurgical New Material Company, where the value is mass percent), Mg-30Zr alloy (Yueyang Yuhua Metallurgical New Material Company, where the value is mass percent ) and Mg-15Sr alloy (Yueyang Yuhua Metallurgical New Materials Co., Ltd., wherein the numerical values ​​are mass percentages) are weighed according to the above-mentioned composition ratio;

[0061] (2) Heat pure Mg ingots, pure Li ingots, and pure Al ingots in a vacuum resistance furnace (Shenyang Vacuum Technology Research Institute, VIF type) to 730 ° C for melting, then add Mg-10Sc alloy, Mg-30Zr alloy and Mg- For 15Sr alloy, before ...

Embodiment 3

[0067] Component distribution (weight percent): 12% Li; 3.0% Al; 1.2% Sr; 0.5% Sc; 0.5% Zr;

[0068] (1) Industrial pure Mg ingots (Shanxi Wenxi Yinguang Magnesium Industry Group Company, purity ≥ 99.5%), industrial pure Al ingots (Shanghai Yuhang Aluminum Company, purity > 99.7%), pure Li ingots (Guangzhou Jingyuan Trading Co., Ltd., purity > 99%), Mg-10Sc alloy (Yueyang Yuhua Metallurgical New Material Company, where the value is mass percent), Mg-30Zr alloy (Yueyang Yuhua Metallurgical New Material Company, where the value is mass percent ) and Mg-15Sr alloy (Yueyang Yuhua Metallurgical New Materials Co., Ltd., wherein the numerical values ​​are mass percentages) are weighed according to the above-mentioned composition ratio;

[0069] (2) Heat pure Mg ingots, pure Li ingots, and pure Al ingots in a vacuum resistance furnace (Shenyang Vacuum Technology Research Institute, VIF type) to 740 ° C for melting, then add Mg-10Sc alloy, Mg-30Zr alloy and Mg- For 15Sr alloy, before ...

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
densityaaaaaaaaaa
tensile strengthaaaaaaaaaa
tensile strengthaaaaaaaaaa
Login to view more

Abstract

The invention discloses magnesium lithium alloy, a preparation method thereof and a preparation method for magnesium lithium alloy plate. The magnesium lithium alloy is composed of 10-15% of Li, 3-6% of Al, 0.3-2.0% of Sr, 0.05-1.0% of Sc, 0.05-0.5% of Zr, less than or equal to 0.005% of impurity element Fe, less than or equal to 0.002% of Ni, less than or equal to 0.02% of Cu and rest of Mg by weight. By means of the Sr and Sc, the heat resistance of the magnesium lithium alloy is improved, the problem of the beta-phase magnesium lithium alloy that the mechanical property of the alloy is lowered obviously due to over-aging is overcame effectively, and moreover, the dendritic crystal growth is hindered because Al3Sc is enriched on a solid-liquid interface, and accordingly the cast structure of the alloy is thinned; after the alloy is solidified, most of the Al3Sc phase is distributed at the crystal boundary, so that the crystal boundary can be pinned greatly, and the yield strength and the tensile strength of the alloy are obviously improved.

Description

technical field [0001] The invention relates to the field of ultra-light and high-strength metal alloys, in particular to a magnesium-lithium alloy, a preparation method thereof, and a preparation method of a magnesium-lithium alloy plate. Background technique [0002] Magnesium-lithium alloy is currently the lightest metal structural material. This alloy has the characteristics of low density, high specific strength and specific stiffness, good plasticity and high damping performance. It is one of the most promising alloys for the development of ultra-light and high-strength alloys. According to the phase diagram of the magnesium-lithium binary alloy, when the lithium content exceeds 5.7wt%, in addition to the α phase of the hcp structure, the β phase of the bcc structure will also appear in the structure of the magnesium-lithium alloy. When the lithium content is greater than 10.3wt%, the matrix structure of the alloy is β solid solution with bcc structure. Due to the app...

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): C22C23/00C22C1/02
Inventor 李坊平魏庆丰张丽芳马涛崔凯
Owner ANHUI JIANGHUAI AUTOMOBILE GRP CORP LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap