US 11,898,232 B2
High-strength alloy based on aluminium and method for producing articles therefrom
Viktor Khrist'yanovich Mann, g. Krasnoyarsk (RU); Aleksandr Nikolaevich Alabin, g. Krasnoyarsk (RU); Anton Valer'evich Frolov, g. Krasnoyarsk (RU); Aleksandr Olegovich Gusev, g. Krasnoyarsk (RU); Aleksandr Yur'evich Krokhin, g. Krasnoyarsk (RU); and Nikolaj Aleksandrovich Belov, g. Krasnoyarsk (RU)
Assigned to United Company RUSAL Engineering and Technology Centre LLC, g. Krasnoyarsk (RU)
Appl. No. 15/764,186
Filed by United Company RUSAL Engineering and Technology Centre LLC, g. Krasnoyarsk (RU)
PCT Filed Apr. 29, 2016, PCT No. PCT/RU2016/000262
§ 371(c)(1), (2) Date Mar. 28, 2018,
PCT Pub. No. WO2017/058052, PCT Pub. Date Apr. 6, 2017.
Claims priority of application No. 2015141320 (RU), filed on Sep. 29, 2015.
Prior Publication US 2018/0274073 A1, Sep. 27, 2018
Int. Cl. C22F 1/053 (2006.01); C22C 21/10 (2006.01)
CPC C22F 1/053 (2013.01) [C22C 21/10 (2013.01)] 8 Claims
OG exemplary drawing
 
1. A high-strength aluminum-based alloy consisting of aluminum, zinc, magnesium, nickel, iron, copper, zirconium, and one or more metal or metals selected from a group consisting of titanium, scandium, and chromium with the following ratios, expressed in terms of wt. %:
 
 
 Zinc 3.8-4.5
 
 Magnesium 1.2-1.5
 
 Nickel 0.5-0.7
 
 Iron 0.3-0.45
 
 Copper 0.01-0.25
 
 Zirconium 0.11-0.2 
 
 Titanium up to 0.02
 
 Scandium up to 0.10
 
 Chromium up to 0.10
 
 Aluminum the rest,
 
wherein iron and nickel create aluminides of an Al9FeNi eutectic phase wherein the volume fraction is in the range 2.0-2.4 vol. %, wherein iron and nickel create eutectic aluminides having a particle size no more than 2 μm, wherein the Ni/Fe ratio of the alloy is ≥1, wherein zirconium and titanium are substantially in the form of secondary phases having a particle size of no more than 20 nm and having a L12 crystal lattice.