Titanium alloy
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Concept definition: titanium as the basis for the addition of other alloying elements composed of alloys called titanium alloy. Titanium alloy has the advantages of low density, high specific strength, good corrosion resistance, good process performance, etc., is more ideal for aerospace engineering structure materials.
Scope of research: titanium alloys can be divided into structural titanium alloys and heat-resistant titanium alloys, or α-type titanium alloys, β-type titanium alloys and α + β-type titanium alloys. The scope of research also includes titanium alloy molding technology, powder metallurgy technology, rapid solidification technology, titanium alloys for military and civilian use.
(I) the development process
The early 1950s to the early 1970s
Demand for power: in order to meet the aerospace industry's demand for materials, titanium alloys have been attached importance to the development of the technological basis is mainly metallurgy and process science.
Main features: This stage is characterized by the material from the exploration of research gradually shifted to the application. The main materials are Ti-6Al-4V, Ti-5Al-2.5Sn and so on, which are mainly used in aviation engines, aerospace pressure vessels, engine cases and so on.
Typical results and products: Typical materials: Ti-6Al-4V, Ti-5Al-2.5Sn
70's ~ 90's
Demand for power: Titanium alloy applications to expand the field of titanium industry has been the rapid development of titanium alloys, new processes and new technologies to promote the development of titanium alloy molding process.
Main features: The characteristics of this stage: (1) titanium in the aerospace industry applications continue to increase in other industries such as marine engineering, chemical, electric power, metallurgy, medical and other aspects of the application is also increasing, becoming the third metal. (2) New types of titanium alloys, such as high-strength titanium alloys, heat-resistant titanium alloys. (3) The use of new technologies such as superplastic molding, rapid solidification technology and isothermal forging. (4) In order to expand the application of the importance of cost reduction.
Typical results and products: Typical materials: Ti-1100, Ti-1023, IMI834, Timetal62S, SP-700, etc.
(B) The existing level and development trend
Titanium alloy is a metal material widely used in the aerospace industry, according to the use of titanium alloy can be divided into structural titanium alloys and high-temperature titanium alloys (use of temperature >400℃). Temperature>400℃).
Structural titanium alloys to Ti-6Al-4V on behalf of the alloy has been widely used in airplanes, missiles, and has been transferred from the secondary load-bearing structural components to the main structural components. 2Sn-2Zr-2Cr-2Mo-0.23Si, Ti-4.5Al-1.5Cr; Ti-4Al-4Mo-2Sn-0.5Si (IMI500) in Britain, SPF00, CR800, SP700 in Japan and BT22 in the former Soviet Union. Among them, Ti-15-333 castings and β-C can replace precipitation hardening stainless steel and nickel-based alloys, Ti-6-22-22 in the U.S. Advanced Tactical Fighter (ATF) prototype F-22A in the amount of 22% (by weight). Japan's SP700 (Ti-4.5Al-3V-2Mo-2Fe), not only high strength, but also in the 755 ℃ up to superplasticity, elongation up to 2000%, good molding, low processing costs, can replace the Ti-6Al-4V, has been used in aerospace components.
High-temperature titanium alloys have made some progress in recent years, in this field, the United States and the United Kingdom dominate. But the two countries use the development method and focus is very different. The British use of α-phase solid solution strengthening as a necessary means of improving creep strength without the need for β-phase **** survival method, focusing on the study of near-α-type alloys, that is, the development of the main focus on improving the creep strength of Ti-4Al-2Sn-4Mo-0.5Si (use temperature of 400 ℃), Ti-11Sn-2.25Al-5Zr-1Mo-0.2Si (IMI679, use temperature of 450 ℃), the development of the alloys of the United States and Britain, the United States and the UK are dominant in this field. 450°C), Ti-6Al-5Zr-0.5Mo-0.25Si (IMI685) alloys, and the fatigue strength improvement-oriented alloys Ti-5.5Al-3.5Sn-3Zr-1Nb-0.3Mo-0.3Si (IMI829) and Ti-5.5Al-4.5Sn-4Zr-0.4Mo-0.8Nb- 0.4Si (IMI83...... >>
Which is better, titanium alloy or aluminum alloy
Titanium alloy, aluminum alloy is basically eliminated.
Titanium Alloy vs Aluminum Alloy
The most fundamental difference between titanium alloy and aluminum alloy is the cost of the material, and the difficulty of processing, in exchange for, extremely strong corrosion resistance, durability. Generally speaking, the service life of titanium alloy products is more than ten times that of aluminum alloy products.
What is the difference between titanium alloy, aluminum alloy and magnesium alloy? What is the best kind?
1, titanium alloy
Titanium alloy is titanium based on the addition of other elements to the composition of the alloy. Titanium has two kinds of homogeneous and heterogeneous crystals: α-titanium with dense hexagonal structure under 882℃, and β-titanium with body-centered cubic structure above 882℃. Alloying elements can be divided into three categories according to their effect on the phase transition temperature: ① stabilize the α phase, improve the phase transition temperature of the elements for the α-stabilizing elements, aluminum, carbon, oxygen and nitrogen, etc.. Aluminum is the main alloying element of titanium alloy, which has obvious effects on improving the strength of the alloy at room temperature and high temperature, reducing specific gravity and increasing elastic modulus. ② stabilize the β-phase, reduce the phase transition temperature of the elements for the β-stabilizing elements, and can be divided into homocrystalline and **** precipitation type two. The former has molybdenum, niobium, vanadium, etc.; the latter has chromium, manganese, copper, iron, silicon, etc.. ③ The elements that have little effect on the phase transition temperature are neutral elements, such as zirconium and tin.
2, aluminum alloy
Aluminum-based alloys. The main alloying elements are copper, silicon, magnesium, zinc, manganese, secondary alloying elements are nickel, iron, titanium, chromium, lithium and so on.
Aluminum alloy density is low, but the specific strength is high, close to or more than high-quality steel, good plasticity, can be processed into a variety of profiles, with excellent electrical conductivity, thermal conductivity and corrosion resistance, widely used in the industry, the amount of use is only second to steel.
Aluminum alloy is divided into two categories: cast aluminum alloy, used in the cast state; deformed aluminum alloy, can withstand pressure processing, mechanical properties higher than the cast state. Can be processed into a variety of forms, specifications of aluminum alloy material. Mainly used in the manufacture of aerospace equipment, daily necessities, building doors and windows.
Aluminum alloy can be divided into deformed aluminum alloy and cast aluminum alloy according to the processing method. Aluminum alloys can be divided into non-heat-treatable reinforced aluminum alloys and heat-treatable reinforced aluminum alloys. The non-heat-treatable reinforced aluminum alloy can not be heat-treated to improve the mechanical properties, and can only be strengthened by cold-working deformation, which mainly includes high-purity aluminum, industrial high-purity aluminum, industrial pure aluminum, and rust-resistant aluminum, etc. The heat-treatable reinforced aluminum alloy can be heat-treated to improve the mechanical properties. Heat treatment can be strengthened aluminum alloy can be quenched and aging and other means of heat treatment to improve mechanical properties, which can be divided into hard aluminum, wrought aluminum, super-hard aluminum and special aluminum alloys.
Aluminum alloys can be heat treated to obtain good mechanical properties, physical properties and corrosion resistance.
Cast aluminum alloys can be divided into aluminum-silicon alloys, aluminum-copper alloys, aluminum-magnesium alloys and aluminum-zinc alloys according to their chemical composition.
3, magnesium alloy
Magnesium-based alloy composed of other elements. Its characteristics are: low density (1.8g/cm3 or so), high specific strength, high modulus of elasticity, good shock absorption, the ability to withstand impact loads than aluminum alloys, good corrosion resistance to organic matter and alkali. The main alloying elements are aluminum, zinc, manganese, cerium, thorium and a small amount of zirconium or cadmium. Currently the most widely used is magnesium aluminum alloy, followed by magnesium manganese alloy and magnesium zinc zirconium alloy. Mainly used in aviation, aerospace, transportation, chemical industry, rockets and other industrial sectors. According to the molding method is divided into deformed magnesium alloy and casting magnesium alloy two categories.
Which is better, titanium alloy or aluminum alloy?
The most fundamental difference between titanium alloy and aluminum alloy is that the cost of materials, and the difficulty of processing, in exchange for, extremely strong corrosion resistance, durability. Generally speaking, the service life of titanium alloy products is more than ten times that of aluminum alloy products.
Titanium alloy, carbon fiber and aluminum alloy which is light
Titanium density ρ = 4.5g/cm3,
Carbon fiber density of 1.8g/cm3, the density of steel is 7.8g/cm3. Density ratio of about 1:4. General-purpose carbon fiber strength in 3500MPa, steel strength of 340MPa, to do the same strength of carbon fiber and steel weight ratio of about 1:43.
Pure aluminum density is 2700Kg/m3 but the density of aluminum alloy density is more heterogeneous, density of about 2650 ~ 2750Kg/m3
Carbon fiber is the lightest
Titanium alloy and aluminum alloy which is good
Of course it is titanium alloy, titanium alloy is generally used in aviation metal or important equipment above, the price is much more expensive than aluminum alloy.
What is the difference between titanium magnesium alloy and aluminum alloy? Where is the most obvious difference?
Titanium alloy characteristics: titanium as the basis for adding other alloying elements composed of alloys called titanium alloy. Titanium alloy has a low density, high specific strength, good corrosion resistance, good process performance and other advantages, is more ideal for aerospace engineering structure materials.
Scope of research: titanium alloys can be divided into structural titanium alloys and heat-resistant titanium alloys, or α-type titanium alloys, β-type titanium alloys and α + β-type titanium alloys. The scope of research also includes titanium alloy forming technology, powder metallurgy technology, rapid solidification technology, titanium alloy military and civilian.
Aluminum alloys are made of pure aluminum with the addition of some alloying elements, such as aluminum-manganese alloys, aluminum-copper alloys, aluminum-copper-magnesium hard aluminum alloys, aluminum-zinc-magnesium-magnesium -Aluminum alloys are made by adding some alloy elements to pure aluminum. Aluminum alloy has better physical and mechanical properties than pure aluminum: easy processing, high durability, wide range of applications, good decorative effect, and rich colors. Aluminum alloy is divided into rust-proof aluminum, duraluminum, super duraluminum and other categories, various categories have their own scope of use, and have their own code for users to choose.
Aluminum alloy still maintains the characteristics of light weight, but the mechanical properties are significantly improved. The application of aluminum alloy material has the following three aspects: one is as a stressed component; two is as a door, window, tube, cover, shell and other materials; three is as a decorative and adiabatic material. Using the feature that aluminum alloy can be colored after anodic oxidation treatment, various decorations are made. Aluminum alloy plate, profile surface can be anticorrosive, rolling, painting, printing and other secondary processing, made of a variety of decorative plates, profiles, as decorative materials.
To put it bluntly, both are alloy materials, all have the characteristics of light weight and good strength, but titanium alloy is better than the strength of aluminum alloy, good rigidity, good plasticity, so the choice of titanium alloy in the aviation materials
Difference between titanium alloy and aluminum alloy
Aluminum and titanium alloy is an aerospace materials, toughness and strength are good to look at the cut surface of the brightness of the hand to knock to listen to the sound of sound the more crisp the higher the titanium content. The higher the content of crisp titanium
What is the difference between titanium magnesium alloy door and aluminum alloy door, that is better
Today's doors and windows market is really a wide variety of doors, there are a variety of doors, including plastic doors, aluminum doors, aluminum doors, aluminum-magnesium alloy, titanium-magnesium alloy doors, so what is the difference between titanium-magnesium alloy door and aluminum alloy door? Which door is better?
(Pictures from the network)
Enjoy more pictures of doors and windows
What is aluminum-magnesium alloy door? Titanium-magnesium aluminum alloy is an alloy of titanium and magnesium elements added to aluminum ingots. Its outstanding features are low density and high strength. Has very good corrosion resistance, good plasticity and high strength, and aluminum alloy door is not added titanium, magnesium elements of pure aluminum alloy material. Aluminum-magnesium alloy door is mainly used for kitchen door or bathroom door, while aluminum alloy door is outdoor door, also used for balcony door.
1, titanium-based alloy composed of other alloying elements called titanium alloy.
Titanium alloy has the advantages of low density, high specific strength, good corrosion resistance, good process performance, etc., is more ideal for aerospace engineering structure materials.
2, aluminum alloy is pure aluminum with some alloying elements made.
Such as aluminum-manganese alloy, aluminum-copper alloy, aluminum-copper-magnesium hard aluminum alloy, aluminum-zinc-magnesium-copper super hard aluminum alloy. Aluminum alloy has better physical and mechanical properties than pure aluminum: easy processing, high durability, wide range of applications, good decorative effect, colorful. Aluminum alloy is divided into rust-proof aluminum, duraluminum, super-hard aluminum and other categories, various categories have their own scope of use, and have their own code for users to choose.
3. Aluminum alloy still maintains the characteristics of light weight, but the mechanical properties are significantly improved.
Aluminum alloy materials are used in the following three ways: first, as a stressed component; second, as doors, windows, tubes, covers, shells and other materials; third, as decorative and adiabatic materials. The use of aluminum alloy anodic oxidation treatment can be colored characteristics, made of a variety of decorative items. Aluminum alloy plate, profile surface can be anticorrosive, rolling, painting, printing and other secondary processing, made of a variety of decorative plates, profiles, as decorative materials.
Titanium magnesium alloy door features:
1, sound insulation
The sound of toilet flushing in the bathroom, the sound of the shower, the sound of stir-frying in the kitchen and the sound of the motor of the cooker hood, constitutes a source of noise, interfering with the tranquility of other halls and rooms. Titanium-magnesium alloy door interior with its unique grid-like or lattice structure, coupled with tight seams, titanium-magnesium alloy door than wooden doors, especially than the aluminum alloy door has a better sound insulation effect.
2, environmental
Titanium magnesium alloy door compared to wooden doors, wooden doors generally need to use paint finishes, paint and synthetic wood panels, residual formaldehyde and other harmful substances, hazardous to health. And titanium-magnesium alloy door because non-toxic, no other harmful substances and meet the environmental requirements, titanium-magnesium alloy door is a new generation of environmentally friendly products. Titanium-magnesium alloy door fire: relative to the wooden door (especially after painting the wooden door) of the fire, flammable, combustion-inducing properties, titanium-magnesium alloy door is self-extinguishing in case of fire, fire retardant, fireproof performance.
3, moisture
As the kitchen and bathroom are often in the wet and humid conditions, the wooden door will inevitably moisture, expansion, deformation, decay, while the titanium-magnesium alloy door has obvious moisture-proof characteristics, stable composition, anti-aging, non-deformation, service life of up to 30 years or more; in this regard, in the Zhejiang region prone to the impact of the rainy season, the titanium-magnesium alloy door moisture-proof function on the Appears to be particularly prominent.
4, anti-corrosion
Titanium magnesium alloy door compared with wooden doors and aluminum alloy doors, wooden doors and aluminum alloy doors are very susceptible to acids, alkalis, salts and exhaust gas erosion, so that the wooden door fading, yellowing, depainting, staining, rotting, so that the aluminum alloy door to produce oxidation, rust. Titanium-magnesium alloy door but not subject to any of the above substances attack and influence, titanium-magnesium alloy door is suitable for use in a variety of natural environments. Even if dirty, titanium-magnesium alloy door can use any cleaner, very easy to clean.
Titanium magnesium alloy door is an indoor door, and aluminum alloy door and plastic steel doors and windows, broken bridge aluminum doors and windows are outdoor doors and windows, mainly used for sealing the balcony of the doors and windows, the use between the two is not the same, resulting in the performance of the material and the thickness is not the same.