公开(公告)号：EP4411010A1

公开(公告)日：2024-08-07

申请号：EP22873266.5

申请日：2022-09-19

申请人： Public Stock Company "VSMPO-AVISMA Corporation"

发明人： LEDER, Mikhail Ottovich ,  KALIENKO, Maksim Sergeevich ,  VOLKOV, Anatoliy Vladimirovich ,  LAVROVA, Tatyana Aleksandrovna ,  GREBENSHCHIKOV, Aleksandr Sergeyevich ,  MIKHAILOV, Vitalii Anatolevich ,  PLAKSINA, Elizaveta Aleksandrovna

IPC分类号： C22C14/00 ,  F01N13/00

CPC分类号： C22C14/00 ,  F01N13/00

摘要： The invention relates to nonferrous metallurgy, namely to the development of low-alloyed titanium alloys characterized by high-temperature strength and thermal stability, and can be used for manufacture of articles intended for long-term operation at high temperatures, namely components of exhaust systems of vehicle engines. Titanium alloy containing aluminum, molybdenum, silicon, oxygen, nitrogen, iron, hydrogen, with the alloy components taken in the following ratio, % wt.:
Aluminium
1.5 to 3.0
Molybdenum
0.1 to 0.5
Silicon
0.1 to 0.6
Iron
0.2 max
Oxygen
0.15 max
Carbon
0.1 max
Nitrogen
0.03 max
Hydrogen
0.015 max
Titanium and inevitable impurities - balance,
which in one embodiment additionally contains copper 0.5 to 1.5% wt., and article made thereof.
A technical result of the embodiment of invention is the production of titanium alloy characterized by a combination of high mechanical and performance properties, including a higher level of creep resistance, with capability of cold forming.

公开(公告)号：EP4379079A1

公开(公告)日：2024-06-05

申请号：EP22849972.9

申请日：2022-06-28

申请人： Public Stock Company "VSMPO-AVISMA Corporation"

发明人： LEDER, Mikhail Ottovich ,  KALIENKO, Maksim Sergeevich ,  VOLKOV, Anatoliy Vladimirovich ,  LAVROVA, Tatyana Aleksandrovna ,  GREBENSHCHIKOV, Aleksandr Sergeyevich ,  MIHAILOV, Vitalii Anatolevich

IPC分类号： C22C14/00 ,  F01N13/00

CPC分类号： C22C14/00 ,  F01N13/00

摘要： The invention relates to the field of nonferrous metallurgy and particularly to development of titanium-based alloys that are resistant to high-temperature oxidation, and can be used for manufacture of articles operating under conditions of prolonged exposure to high temperatures, in particular for manufacture of components of vehicle engine exhaust systems. The titanium-based alloy consists of aluminum, zirconium, niobium, molybdenum, silicon, oxygen, nitrogen, iron, hydrogen, and carbon, and is characterized in that the components of the alloy are in the following ratio, in weight %:
Aluminum
0.7-1.5
Zirconium
0.5-1.5
Niobium
0.5-1.5
Molybdenum
0.1-0.5
Silicon
0.5 max
Iron
0.2 max
Oxygen
0.15 max
Carbon
0.1 max
Nitrogen
0.03 max
Hydrogen
0.015 max
Titanium and inevitable impurities being the balance; and an article made of this alloy.
The technical result achieved in the implementation of the invention is obtaining of a titanium alloy with the set of high mechanical and performance properties including increased level of high-temperature oxidation resistance.

公开(公告)号：EP4317497A1

公开(公告)日：2024-02-07

申请号：EP21933400.0

申请日：2021-03-26

申请人： Public Stock Company "VSMPO-AVISMA Corporation"

发明人： LEDER, Mikhail Ottovich ,  VOLKOV, Anatoliy Vladimirovich ,  GREBENSHCHIKOV, Aleksandr Sergeyevich ,  SHCHETNIKOV, Nikolay Vasilyevich

IPC分类号： C22C14/00 ,  C22F1/18 ,  B21C1/00

摘要： The invention relates to metallurgy, and more particularly to producing titanium alloy-based materials with specific mechanical properties for the manufacture of fasteners for use in various fields of industry and preferably in the aerospace industry. The claimed material for the manufacture of high-strength fasteners is made from a titanium alloy containing alloying elements in the form of α-stabilizers, #-stabilizers and neutral strengthening elements, the rest being titanium and unavoidable impurities. The size of a beta-sub grain in the structure of the material, which is subjected to solution annealing and aging, does not exceed 15 µm. The material for the manufacture of high-strength fasteners is produced in the form of round bar with a diameter of up to 40 mm or round wire with a diameter of up to 18 mm, which are subjected to solution annealing and aging. After solution annealing and aging, the material has an ultimate tensile strength of greater than 1400 MPa, an elongation of greater than 11%, a reduction in area of greater than 35% and a double shear strength of greater than 750 MPa. An intermediate blank for drawing is obtained by melting an ingot of titanium alloy, thermomechanically processing the ingot to obtain a forged billet and then rolling same. An intermediate blank for drawing is also obtainable using a powder metallurgy method.