FIELD: manufacture of semi-finished sheet product from low-plasticity two-phase titanium alloy of submicrocrystalline structure suitable for low-temperature superplastic deformation.
SUBSTANCE: method involves rolling blank with prepared structure at temperature below polymorphic transformation temperature under isothermal or quasi-isothermal conditions provided by heating of rolls. Grain size stabilization and isotropic properties are reached thanks to the fact that rolling process is provided in low-temperature superplastic deformation mode: at first passage deformation is carried out at the extent of ε≥εmin, where εmin is minimum extent at which structural state of alloy is formed in selected temperature-rolling speed mode. Such structural state is necessary for enabling of cooperated grain boundary sliding during deformation. After each subsequent passage of rolling step, blank is cooled for fixing of structural state provided upon deformation. During heating of blank in furnace for subsequent passage of rolling step, heating time is limited in order to avoid disturbance of structural state of alloy produced at previous rolling passage.
EFFECT: increased efficiency and improved quality of semi-finished sheet product fit for further low-temperature superplastic deformation.
12 cl, 9 dwg, 1 tbl, 7 ex
Title | Year | Author | Number |
---|---|---|---|
METHOD FOR MANUFACTURE OF SEMI-FINISHED SHEET PRODUCTS FROM TITANIUM ALLOYS | 2002 |
|
RU2224047C1 |
METHOD OF MANUFACTURE OF A SHEET SEMIPRODUCT PRODUCED OUT OF AN ALLOY BASED ON NICKEL OF INCONEL 718 TYPE | 2004 |
|
RU2269589C1 |
METHOD OF FABRICATION OF THIN SHEETS FROM TWO-PHASE TITANIUM ALLOY AND PRODUCT FROM THESE SHEETS | 2013 |
|
RU2555267C2 |
METHOD FOR MAKING THIN SHEETS OF HIGH-STRENGTH TITANIUM ALLOYS | 2003 |
|
RU2250806C1 |
METHOD FOR MAKING LAMINATE CELLULAR CONSTRUCTION | 1999 |
|
RU2170636C2 |
METHOD TO PRODUCE METAL PROTECTIVE PATCH PIECE | 2014 |
|
RU2553759C1 |
METHOD OF PRODUCING SUPERDUCTILE PLATES FROM ALUMINIUM ALLOYS OF ALUMINIUM-MAGNESIUM-LITHIUM SYSTEM | 2007 |
|
RU2345173C1 |
AXIALLY SYMMETRICAL PART FORMING METHOD | 2004 |
|
RU2254195C1 |
METHOD FOR MAKING THIN SHEETS OF HIGH STRENGTH TITANIUM ALLOYS | 2003 |
|
RU2243833C1 |
METHOD FOR PRODUCTION OF SHELL | 2008 |
|
RU2380185C2 |
Authors
Dates
2008-03-27—Published
2006-07-06—Filed