FIELD: metallurgy; manufacturing technology.
SUBSTANCE: invention relates to metallurgy, in particular to the high-temperature thermomechanical treatment of titanium alloys. Method of thermomechanical treatment of titanium alloys involves multiple heating up to a temperature above and below the temperature of polymorphic transformation, deformation, cooling to room temperature and subsequent aging. First heating is carried out up to a temperature of 230–370 °C higher than the temperature of polymorphic transformation, then material is cured, deformed with deformation degree of 25–60 % and cooled. Second heating is carried out up to a temperature of 90–200 °C higher than the temperature of polymorphic transformation, then material is cured, deformed with deformation degree of 25–60 % and cooled. Third heating is carried out to a temperature of 10–100 °C below the temperature of polymorphic transformation, then material is deformed and cooled. Fourth heating is carried out to a temperature of 100–220 °C higher than the temperature of polymorphic transformation, then material is cured, deformed and cooled. Fifth heating is carried out to a temperature of 20–70 °C higher than the temperature of polymorphic transformation, then material is deformed with deformation degree of 60–90 % and cooled. Sixth heating is carried out to a temperature of 20–70 °C below the temperature of polymorphic transformation, then material is deformed with deformation degree of 20–40 % and cooled.
EFFECT: values of impact hardness, specific fracture work of a specimen with crack during impact bending, low cycle fatigue, relative contraction and strength are increased.
4 cl, 1 tbl
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD OF THERMO-MECHANICAL TREATMENT OF TITANIUM ALLOYS | 2007 |
|
RU2369662C2 |
| METHOD OF THE THERMOMECHANICAL PROCESSING OF THE ARTICLES MADE OUT OF THE TITANIUM ALLOYS | 2006 |
|
RU2318075C1 |
| METHOD OF THERMOMECHANICAL TREATMENT OF ITEMS FROM TITANIUM ALLOYS | 2011 |
|
RU2457273C1 |
| METHOD OF THERMOMECHANICAL TREATMENT OF TITANIUM ALLOYS | 2007 |
|
RU2368697C2 |
| METHOD OF THERMO-MECHANICAL TREATMENT OF TITANIUM ALLOYS | 2007 |
|
RU2369661C2 |
| METHOD OF TITANIUM ALLOYS THERMOMECHANICAL TREATMENT | 2007 |
|
RU2360030C1 |
| METHOD OF THE THERMOMECHANICAL PROCESSING OF THE ARTICLES MADE OUT OF THE TITANIUM ALLOYS | 2006 |
|
RU2318074C1 |
| METHOD OF THE THERMOMECHANICAL PROCESSING OF THE ARTICLES MADE OUT OF THE TITANIUM ALLOYS | 2006 |
|
RU2318076C1 |
| METHOD OF THERMO-MECHANICAL TREATMENT OF TITANIUM ALLOYS | 2002 |
|
RU2219280C2 |
| METHOD OF HIGH-TEMPERATURE THERMOMECHANICAL TREATMENT OF (ALPHA+BETA)-TITANIUM ALLOYS | 2016 |
|
RU2615102C1 |
