Characteristics And Applications Of Titanium Alloys

TA0/TA1/TA2/TA3 Industrially pure titanium refers to several kinds of unalloyed titanium with different content of Fe, C, N, O and other impurities. It cannot be strengthened by heat treatment, has excellent forming properties, and is easy to weld and braze. It is used to manufacture various non-bearing parts, and can work for a long time at 300°C. TA5 has excellent welding performance and corrosion resistance, and is used to manufacture structural parts for use in marine environments. TA7 is a medium-strength α-titanium alloy, which cannot be heat-treated and strengthened. Good fracture toughness at room and high temperatures. Good welding properties, can manufacture parts such as magazine shells and wall plates. Can work for a long time at 500 ℃. TA9 The addition of a small amount of palladium improves the corrosion resistance in oxidising media, especially crevice corrosion resistance, which can be applied in chemical and anticorrosion engineering. TA16 Low strength, high plasticity, good corrosion resistance and welding performance of the pipe alloy. TA10 Corrosion resistance is significantly better than that of pure titanium and close to TA9. TA11 Belongs to the nearly α-type titanium alloys, with high It has high modulus of elasticity and low density. The room temperature strength is comparable with TC4, but the high temperature performance is higher than TC4, suitable for the manufacture of engine compressor discs, blades and magazines and other parts.TA12 belongs to the nearly α-type heat-strengthened titanium alloy, which can be operated for a long period of time at 550℃, with good process plasticity, suitable for the manufacture of aero-engine compressor discs, barrels and blades and other parts.TA18 belongs to the nearly α-type titanium alloy, which can be used for the cold machining of tubes, and the welding and cold forming properties are better than those of TC4 alloy. Its welding performance and cold forming is better than TC4 alloy. This alloy is used for seamless pipes for pressurised aviation hydraulic and fuel piping systems etc. TA19 is a nearly α-type titanium alloy that can be used for long term work at 500°C. Its high-temperature strength and creep properties are better than those of TA11 alloy. Suitable for the manufacture of aero-engine pressure box and aircraft skins, etc. TA21 low strength, high plasticity, corrosion resistance and good welding performance, mainly used as tubes and sheet metal parts. TC1 main performance characteristics than pure titanium slightly higher strength and very good process plasticity, combined with good welding performance and thermal stability. Can not be strengthened by solid solution aging, can work at 350 ℃ for a long time, suitable for the manufacture of complex shapes of aviation sheet metal parts.TC2 belongs to the medium-strength near-alpha-type titanium alloy, can not be strengthened by heat treatment. It has good impact welding performance, can work for a long time at 350℃, and is suitable for manufacturing aviation sheet metal parts.TA15 belongs to high alumina-equivalent near-alpha-type titanium alloy, which not only has the good heat strength and weldability of alpha-type titanium alloy, but also has the process plasticity similar to alpha+beta-type titanium alloy.TA15 has medium-strength, good thermal stability and welding performance. TA15 has medium strength, good thermal stability and welding performance, suitable for the manufacture of aerospace parts working at 500 ℃ for a long time.TC20 This alloy replaces the toxic element V in TC4 alloy with the non-toxic element Nb. Its main mechanical properties are comparable with those of TC4.

TC20 is a kind of surgical implant medical titanium alloy, so far the amount of more than 200 t, at present in the domestic clinical applications, and in line with the ISO-5832-11-2014 standard. ti-31 belongs to the medium-strength weldable near-alpha-type titanium alloy, high-temperature seawater corrosion resistance, suitable for the manufacture of naval piping system parts. ti-75 belongs to the medium-strength weldable near-alpha-type titanium alloy, seawater corrosion resistance, suitable for the manufacture of heat exchangers, tube and plate parts. Ti-55311S belongs to nearly α-type hot strong titanium alloy, can work at 550 ℃ for a long time, suitable for the manufacture of various types of aero-engine high-temperature parts.TC4 belongs to the medium-strength α + β-type titanium alloys, has excellent comprehensive performance, good thermal processing performance, in the aerospace industry has been widely used. It can work under 400℃ for a long time. It is suitable for the manufacture of aero-engine fan and compressor discs and blades, as well as aircraft frames and joints and other parts.TC6 is a martensitic α + β-type titanium alloy, which can be used for long-term work at 450 ℃, has good thermal strength properties, and excellent hot working properties. It is suitable for the manufacture of aero-engine compressor discs and blades, as well as aircraft high thrust, joints and other load-bearing parts.TC11 belongs to α + β-type heat-strengthened titanium alloy, which can be worked for a long time at 500 ℃ with excellent heat-strengthening properties and high room temperature strength and good hot working process performance. It is suitable for the manufacture of aero-engine compressor discs and blades, etc. TC16 is a martensitic α+β-type titanium alloy, quasi-high-strength titanium alloy, with a strength of more than 1030 MPa after solid solution ageing and a small sensitivity to stress concentration, and it is suitable for the manufacture of fasteners. TC17 is a α+β-type high-strength titanium alloy rich in β-stabilising elements. It has the advantages of high strength, good fracture toughness, high hardenability and wide forging temperature. Suitable for the manufacture of aero-engine fan and compressor discs and other large cross-section forgings, and can work for a long time at 490 ° C. TC18 annealed state has a high strength, quenched state has a high hardenability (250mm), suitable for the manufacture of load-bearing components and landing gear parts. TC19 suitable for medium temperature, high strength engine compressor discs, fan discs and blades, and other important parts of the engine pressure engine discs. tc451 good heat treatment properties TC451 heat treatment performance is good, the same strength of its plasticity and toughness is better than Ti-6A1-4V. hot and cold forming, welding performance is good. TC21 belongs to the high-strength toughness damage tolerance type titanium alloy, used in aviation important load-bearing components. ZTC3 a kind of casting titanium alloy with eutectic elements of Si and rare earth elements of Ce, in the 500 ℃ below the excellent heat strength performance, casting performance is good, no tendency to hot cracking, can be used to manufacture ZTC4 is a medium-strength casting titanium alloy, which can work for a long time at 350℃, and is the most widely used casting titanium alloy at home and abroad, and it can be used to manufacture static aviation components such as magazine, casing, bracket, frame, etc., and it can also be used to manufacture impellers with low rotational speeds, etc. ZTC5 is a heat-resistant martensitic α + β casting titanium alloy with high strength at room temperature and good performance in casting, without thermal cracking tendency. It has high toughness and good thermal stability at room temperature. Casting process performance is good, no cracking tendency. Can be used in the manufacture of a variety of aerospace static high-strength components. tb2 in the solid solution state has excellent cold forming properties and welding properties. In the solid solution aging state has high strength and good plasticity match. Suitable for star and arrow connecting straps and aerospace fasteners.TB3 Excellent cold forming properties in the solid solution state, and a good match of strength and toughness in the solid solution aging state. Suitable for aerospace fasteners and elastic components.TB5 has excellent cold forming properties, can be formed at room temperature for moderately complex sheet metal parts, can also be superplasticised at 700 ℃ and above, with excellent weldability. It is suitable for manufacturing aerospace sheet metal parts and fasteners.TB6 belongs to high-strength and high-toughness titanium alloy, and can be used for isothermal forging. Can be used in aircraft fuselage, wing and landing gear structure, if replace the same strength of high strength steel, can reduce the structural quality of about 40%.TB8 Good oxidation resistance, corrosion resistance, high strength alloy. Used in the manufacture of moderately complex cold-formed sheet metal parts and high-strength, oxidation-resistant load-bearing components. Titanium foil is the matrix of composite materials.TB9 High strength, corrosion resistance, can make fasteners, springs, torsion bars, oil, gas, geothermal wells well tubes and shells, titanium foil is the matrix of composite materials.TB10 High specific strength, good fracture toughness, high hardenability, excellent hot workability and cutting performance. Has been used in petrochemical pressure components and aerospace high-strength components.TB7 excellent corrosion resistance, used for casting chemical machinery, pumps, valves and other parts.Ti-40 resistance to high temperatures below 500 ℃, flame-retardant titanium alloys, suitable for aero-engine components.