Improving of fretting resistance intermetallic Ti2AlNb alloy

Gorlov D.S., Zaklyakova O.V., Aleksandrov D.A., Budinovskiy S.A.
UDC
669.017.165:669.295
DOI
10.18577/2307-6046-2021-0-2-62-70
Article PDF (Russian) (826.07 KB)
How to cite
Gorlov D.S., Zaklyakova O.V., Aleksandrov D.A., Budinovskiy S.A. Improving of fretting resistance intermetallic Ti2AlNb alloy // Proceedings of VIAM. 2021. No. 2. DOI: 10.18577/2307-6046-2021-0-2-62-70. URL: https://test.viam.ru/en/journal/2021/2/7
Keywords
orthorhombic titanium aluminide Ti2AlNb, dispersion-hardening alloy, ion-plasma coating, fretting resistance, fretting damage, heat resistance, phase composition, element composition.
Abstract

The results of research on improving the fretting resistance of a titanium alloy made of orthorhombic titanium aluminide Ti2AlNb by forming a coating consisting of a barrier and an outer layer on the surface using an industrial vacuum-arc installation MAP-3 are presented. The dependences of the total wear and the coefficient of friction of samples made of Ti2AlNb alloy with and without coating in combination with a counterbody made of high-strength welded dispersed-hardening alloy during fretting damage tests at room (20 °C) and elevated (700 °C) temperatures are established. The kinetics of oxygen saturation of the surface of samples made of Ti2AlNb alloy with and without coating at the operating temperature of the alloy based on 200 h is shown. The phase and elemental compositions of the fretting-resistant coating after high-temperature exposure are investigated.

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