METHOD OF OBTAINING HEAT-RESISTANT WEAR-RESISTANT LAYER BASED ON TITANIUM ALUMINIDES ON TITANIUM AND TITANIUM ALLOY Russian patent published in 2020 - IPC B23K9/04 B23K103/18 

FIELD: technological processes.

SUBSTANCE: invention can be used when applying heat-resistant and wear-resistant layers on titanium and titanium alloys operating at high temperatures and in abrasive wear conditions. Electric arc surfacing is performed by nonconsumable electrode in medium of inert protective gases with application of two filler wires of aluminum and zirconium. Deposition mode is selected from the condition of obtaining a weld pad with aluminum content of 5–25 % and zirconium at 3–15 %. Said content of aluminum and zirconium at surfacing provides formation of structure of weld metal on the basis of supersaturated solution of aluminum in titanium and intermetallic phase Ti₃Al, doped with zirconium.

EFFECT: alloying with zirconium in the specified limits provides reduction of inclination of the weld metal to formation of cracks that promotes improvement of mechanical and operational properties of the weld metal.

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