What is Properties and Applications of Titanium Alloy Ti6Al4V
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The U.S. and its allies plan to impose sanctions on more Russian industries and supply chains.
The US government representatives recently visited Europe to consult with allies on strengthening and enforcing sanctions to punish Russia. They also plan to take action to disrupt their critical supply chains.
The US government claims that the sanctions imposed on Russia since the invasion began on February 24 have proved extremely effective, plunging Russia into a financial crisis. The sanctions include a freeze on the Russian central bank's foreign exchange assets, a ban on hard currency transactions by major Russian banks and wealthy individuals, and export restrictions on advanced semiconductors and other technologies. The sanctions have weakened the Russian economy and left the Kremlin with fewer resources.
The volatile international political situations will continue to affect the markets and prices of many commodities like the Ti6Al4V alloy.
What is Titanium Alloy?
Titanium alloy Ti6Al4V is a medium-strength α-β type two-phase titanium alloy
containing 6% α-stabilizing element AI and 4% β-stabilizing element V. This
alloy has excellent comprehensive properties and has obtained the most extensive
applications in the aviation and aerospace industries.
The main properties and uses
Ti6Al4V titanium alloy is heated below 430 ℃ for a long time to form a very
thin and protective oxide film. As the heating temperature increases, the oxide
film thickens and its protection becomes poor. After the alloy was heated at 700
°C for 2 h, the oxide film thickness reached 25 μrn. Heating at temperatures
above 800°C forms a sparse oxide layer. After heating at 1000 °C for 1 h, the
thickness of the oxide layer reached 0.65 mm.
Ti6Al4V alloy can be welded by argon arc welding, spot welding, brazing,
electron beam welding and plasma welding. The strength of the welded joint is
basically the same as that of the base metal.
When Ti6Al4V titanium alloy parts are in contact with aluminum alloy and
structural steel parts, especially under certain corrosive medium conditions,
aluminum alloy and structural steel parts will suffer accelerated corrosion and
damage as the anode of the contact couple due to the negative electrode
potential. Therefore, between TC4 titanium alloy parts and aluminum alloy or
structural steel parts, protective measures such as padding and anti-corrosion
tape should be taken. TC4 alloy parts are strictly prohibited from contact with
parts or tools of lead, zinc, cadmium, tin, silver, bismuth and other
Before vacuum annealing, the oxide skin and oxygen-rich layer on the surface
of the parts should be removed, and the oil should be carefully removed before
entering the furnace. When vacuum annealing parts with complex shapes, fixtures
must be used to reduce the deformation of parts. Into the furnace parts are
preferably filled with pre-degassed titanium oxide-free chips to prevent
oxidation of the parts.
Ti6Al4V titanium alloy is now widely used in the manufacture of aero-engine
fans and compressor discs and blades, as well as various load-bearing beams,
frames, joints and fasteners in aircraft structures.
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The EU’s draft REPowerEU plan calls for an increase of 15TWh of rooftop PV capacity by 2022. The draft also calls for EU and national governments to take action this year to reduce the time required to obtain permits for rooftop PV installations to three months, and proposes that "all new buildings and existing buildings with an energy grade OF D or above should have rooftop PV installations by 2025".
In addition, the European Commission is likely to set a target for installed PV capacity of 300GW by 2025 and 500GW by 2030. Some members are more aggressive, with Austria, Belgium, Lithuania, Luxembourg, and Spain demanding a 1TW target for 2030.
The REPowerEU initiative, worth 195 billion euros, was proposed by the EU on March 8 to phase out member states' dependence on Russian fossil fuels by 2030. In a few days, the European Commission will present a package to implement the RePowerEU strategy.
As an important application scenario of distributed PV, rooftop PV is not limited to land, and the development conditions are relatively convenient.
Since the end of 2021, Spain, France, the Netherlands, and other countries have introduced policies and measures such as government subsidies, tax cuts, fee reductions, and accelerated grid-connection approval to encourage the development of distributed PV. Europe's potential for rooftop PV is huge and will continue to be an important growth pole for the industry, according to Wood Mackenzie.
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