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

Flame-proof Al-Li-V alloy

An alloy, aluminum-lithium alloy technology, applied in the field of alloys, can solve the problem that the anti-combustion performance cannot meet the requirements, etc., and achieve the effect of low liquid-solid solidification temperature range, reducing the amount of use, and increasing the ignition point of the alloy.

Inactive Publication Date: 2018-01-30
GUANGZHOU YUZHI TECH CO LTD
View PDF0 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, as a structural material, it is far from enough to meet the requirements of only having combustion resistance during smelting. More importantly, the final aluminum-lithium alloy product must also have satisfactory mechanical strength, at least reaching the level commonly used. Mechanical properties of Al-Li alloys

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] An Al-Li-V aluminum-lithium alloy with combustion resistance when smelted at 710 degrees. In terms of weight percentage, the chemical composition of the alloy is: Li: 6.4wt.%, V: 2.3wt.%, Ca: 2.1wt.%, Sr: 1.8wt.%, Sn: 1.4wt.%, In: 0.6wt .%, Pr: 0.3wt.%, Yb: 0.1wt.%, S: 0.6wt.%, B: 1.4wt.%, the balance is aluminum. The preparation method of the alloy: add the above-mentioned raw materials into the induction furnace under the atmospheric environment, and use a silicon carbide crucible. Induction heating to 710 degrees to form an alloy solution, and use the electromagnetic effect to fully stir for about 10 minutes. The alloy liquid is poured into a water glass mold at 710°C for 10 minutes for casting. The ingot was deformed at room temperature with a rolling reduction of 6% in each pass. Every 3 passes of rolling requires an intermediate heat treatment to eliminate work hardening, the process is: 290 degrees, 1.4 hours. The final heat treatment process after rolling is...

Embodiment 2

[0021]An Al-Li-V aluminum-lithium alloy with combustion resistance when smelted at 750 degrees. In terms of weight percentage, the chemical composition of the alloy is: Li: 6.7wt.%, V: 2.1wt.%, Ca: 2.8wt.%, Sr: 1.6wt.%, Sn: 1.4wt.%, In: 0.6wt .%, Pr: 0.3wt.%, Yb: 0.1wt.%, S: 0.6wt.%, B: 1.4wt.%, the balance is aluminum. The preparation method of the alloy: add the above-mentioned raw materials into the induction furnace under the atmospheric environment, and use a silicon carbide crucible. Induction heating to 750 degrees to form an alloy solution, and use the electromagnetic effect to fully stir for about 10 minutes. The alloy liquid is poured into a water glass mold at 750°C for 10 minutes for casting. The ingots were deformed at room temperature with a rolling reduction of 8% in each pass. Every 3 passes of rolling requires an intermediate heat treatment to eliminate work hardening, the process is: 290 degrees, 1.4 hours. The final heat treatment process after rolling i...

Embodiment 3

[0023] An Al-Li-V aluminum-lithium alloy with combustion resistance when smelted at 780 degrees. In terms of weight percentage, the chemical composition of the alloy is: Li: 5.3wt.%, V: 3.2wt.%, Ca: 2.1wt.%, Sr: 1.6wt.%, Sn: 1.8wt.%, In: 0.6wt .%, Pr: 0.3wt.%, Yb: 0.1wt.%, S: 0.6wt.%, B: 1.4wt.%, the balance is aluminum. The preparation method of the alloy: add the above-mentioned raw materials into the induction furnace under the atmospheric environment, and use a silicon carbide crucible. Induction heating to 780 degrees to form an alloy solution, and use the electromagnetic effect to fully stir for about 10 minutes. The alloy liquid is poured into a water glass mold at 780 degrees for 10 minutes for casting. The ingot was deformed at room temperature with a rolling reduction of 6% in each pass. Every 3 passes of rolling requires an intermediate heat treatment to eliminate work hardening, the process is: 290 degrees, 1.4 hours. The final heat treatment process after roll...

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
yield strengthaaaaaaaaaa
tensile strengthaaaaaaaaaa
yield strengthaaaaaaaaaa
Login to View More

Abstract

The invention discloses an Al-Li-V aluminum lithium alloy and a processing technique of the Al-Li-V aluminum lithium alloy, wherein the Al-Li-V aluminum lithium alloy has an anti-burning property whensmelted at the temperature of 700-800 DEG C. The Al-Li-V aluminum lithium alloy comprises the following components by weight percent: 2.0-8.0 wt.% of Li, 2.0-4.0 wt.% of V, 2.0-4.0 wt.% of Ca, 1.0-2.0 wt.% of Sr, 1.0-2.0 wt.% of Sn, 0.4-0.8 wt.% of In, 0.2-0.4 wt.% of Pr, 0.1-0.2 wt.% Yb, 0.5-1.0 wt.% of S, 1.0-2.0 wt.% of B, and the balance of Al. Through an optimized alloying method, the defectof the use amount of the alloy elements is greatly reduced, the quite excellent flame retardant effect is also acquired, and the ignition point of the alloy is greatly improved while the content of the flame retardant element is obviously reduced. The Al-Li-V aluminum lithium alloy does not burn obviously after being thermally preserved and standing for 5 hours within the scope of 700-800 DEG C under the atmospheric environment. The material has the mechanical property of the traditional aluminum lithium alloy, the yield strength is 400-650 MPa, the tensile strength is 500-750 MPa, and the percentage of elongation is 4-15%. The Al-Li-V aluminum lithium alloy has the high heat conducting property that the traditional aluminum lithium alloy does not have, the heat conductivity is 120-140 W / m.k, and the heat conductivity is of the traditional aluminum lithium alloy is about 85 W / m.k.

Description

technical field [0001] The invention relates to the technical field of alloys, in particular to an aluminum-lithium alloy. Background technique [0002] Lithium is the lightest metal element in the world. When lithium is added to aluminum, an aluminum-lithium alloy is formed. Lithium can both reduce the density of aluminum and increase the modulus of elasticity. Generally speaking, for every 1wt.% lithium added to aluminum metal, the density of aluminum alloy will decrease by about 3%, while its modulus of elasticity will increase by about 6%, making it a strong competitive product for composite materials. Aluminum-lithium alloys are mainly developed for the weight reduction of aircraft and aerospace equipment, so they are also mainly used in the aerospace field, nuclear reactor materials, tank armor-piercing bombs, torpedoes and other weapon structural parts. In addition, it is also fully used in the fields of automobiles and robots. Aluminum-lithium alloys are mainly us...

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): C22C21/00C22C1/02C22F1/04C22F1/02
Inventor 杨长江
Owner GUANGZHOU YUZHI TECH CO LTD
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

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com