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What are the mechanical properties of titanium at low temperature?

What are the mechanical properties of titanium at low temperature?

Update Time:2021/12/9
Titanium and titanium alloys still maintain certain mechanical properties at low and ultra-low temperatures. As the temperature decreases, the strength of titanium and titanium alloys increases, while the ductility gradually decreases. Many annealed titanium alloys have sufficient ductility and fracture toughness at a temperature of 195.5℃. Ti-5al-2.5sn with extremely low interstitial elements can be used at a temperature of 252.7℃. The ratio of notched tensile strength to non-notched tensile strength is 0.95~1.15 at a temperature of 25.7℃.

Liquid oxygen, liquid hydrogen and liquid gas are important propellants in missiles and space devices. The low temperature properties of materials used to make cryogenic gas vessels and cryogenic structures are very important. When the microstructure is equiaxed and the content of interstitial elements (oxygen, nitrogen, hydrogen, etc.) is very low, the elongation of titanium alloy is still above 5%. Most titanium alloys have low elongation at -252.7℃, while ti-6Al-4V has elongation as high as 12%.
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