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Registration Number

0222U004608, 0117U001057 , R & D reports

Title

High-strength aluminum alloys with additional dispersion strengthening by quasicrystals and intermetallics for application in extreme conditions of high temperatures

Head

Yefimov Mykola O., Кандидат фізико-математичних наук

Registration Date

19-09-2022

Organization

Institute of Problems of Materials Science named after IM Frantsevich of the National Academy of Sciences of Ukraine

Description

 The object of research is materials from alloys Al-Fe-Cr, Al-Fe-V-Si and Al-Cu-Fe with quasicrystalline and crystalline phases obtained using water atomization technique. The purpose of the work is elaborate the physical and technological principles for obtaining quasicrystalline materials, as of coatings and powder semi-finished products with a wide range of performance characteristics. Research methods: mechanical tests for tensile, bending, determination of hardness and adhesive strength, optical, scanning microscopy, X-ray diffraction analysis. The scientific bases for the creation of new heat-resistant wrought aluminum alloy based on Al-Fe-V-Si and Al-Fe-Cr systems, which have on 20% increased strength in the temperature range of 20… 300 ºC compared to known aluminum alloys, have been developed. The optimal ratio of nanoquasicrystalline and crystalline reinforcing particles in the developed alloys is found, which provides an increase in a number of mechanical characteristics. The physical principles of creation of Al-Cu-Fe quasicrystalline protective coatings by the high-speed air-fuel spraying, with high adhesive strength (up to 30 MPa) and high corrosion resistance, are determined. Developed heat-resistant Al-Fe-V-Si and Al-Fe-Cr alloys and protective high-strength coatings will find application primarily in the aerospace industry.

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Milman Yuly V
Yefimov Mykola O
Balkashynova Olena V
Vasyleva Halyna I
Voropaiev Vitalii S
Honcharuk Viktor A
Danylenko Mykola I
Zhoha Volodymyr O
Zadorozhna Hanna V
Zakharova Nataliia P
Kysil Viacheslav M
Kytranov Dmytro S
Kuprin Viktor V
Leplynskyi Volodymyr V
Melnyk Viktor Kh
Mordovets Nadiia M
Muzyka Oleksii O
Poperenko Tetiana V
Sameliuk Yurii V
Semenov Mykola V
Sydorchuk Oleh M
Tokhtuiev Valerii H
Tsyvilitsyn Vadym Yu
Sharovskyi Andrii O