FIELD: metallurgy.
SUBSTANCE: proposed alloy features density at a room temperature of not over 4.2 g/cm3, solidus temperature of at least 1450°C, the number of phases α2 and γ at 600-800°C making at least 20 wt % and at least 69 wt %, respectively. Total quantity of said phase makes at least 95 wt % while niobium content in γ-phase makes at least 3 wt %. Proposed method consists in that said γ-TiAl alloy containing niobium in amount of 1.3 or 1.5 at. % and transition metals selected from chromium in amount of 1.3 or 1.7 at. % and zirconium in amount of 1.0 at. % is subjected to hot isostatic forming. Said forming is combined with annealing at 800°C and holding for 100 hours.
EFFECT: low density, stable phase composition at operating temperatures.
2 cl, 2 dwg, 4 tbl, 1 ex
| Title | Year | Author | Number |
|---|---|---|---|
| HEAT TREATMENT METHOD OF CASTINGS FROM ALLOYS BASED ON GAMMA TITANIUM ALUMINIDE | 2012 |
|
RU2502824C1 |
| INTERMETALLIC TIAL-BASED ALLOY | 2016 |
|
RU2633135C1 |
| INTERMETALLIC TiAl BASED ALLOY | 2015 |
|
RU2621500C1 |
| GAMMA TITANIUM ALUMINIDE-BASED ALLOY | 2016 |
|
RU2614354C1 |
| METHOD OF ELECTRODE MANUFACTURING TO PRODUCE POWDER HEAT-RESISTANT ALLOYS BASED ON TITANIUM ALUMINIDE | 2014 |
|
RU2562552C1 |
| METHOD OF INTERMETALLIC ALLOYS PROCESSING, BASED ON TITANIUM GAMMA ALUMINIDE | 2015 |
|
RU2625515C2 |
| INTERMETALLIC TITANIUM-BASED ALLOY AND ARTICLE MADE THEREFROM | 2015 |
|
RU2606368C1 |
| INTERMETALLIC ALLOY BASED ON THE γ-TiAl PHASE FOR THE MANUFACTURE OF A LOW-PRESSURE TURBINE BLADE OF A GAS TURBINE ENGINE AND A METHOD FOR MANUFACTURING A BLADE BLANK FROM AN INTERMETALLIC ALLOY BASED ON THE γ-TiAl PHASE | 2021 |
|
RU2777775C1 |
| METHOD OF THERMAL TREATMENT OF CAST SLABS FROM HYPEREUTECTIC INTERMETALLIDE ALLOYS BASED ON PHASES γ-TiAl+α-TiAl | 2012 |
|
RU2503738C2 |
| METHOD OF GAMMA-ALUMINIDE TITANIUM-BASED ALLOYS PRODUCTION | 2013 |
|
RU2523049C1 |
