TSU physicists have strengthened alloys that can protect icebreakers
The SPhTI Laboratory of High-Strength Crystals’ staff has found a way to harden multicomponent alloys that can withstand critically low temperatures close to -200 °C. Such materials are resistant to liquid media and have increased wear resistance. As a result, new modified alloys can be used to harden the bow of icebreakers, make wear-resistant cutting material, and for other purposes.
- A distinctive feature of high-entropy alloys (HEAs) is their composition. Such materials contain five or more metals, mixed in approximately equal quantities, - explains Anna Vyrodova, a laboratory staff member. - HEAs have unique mechanical properties: high strength and good plasticity while maintaining fracture toughness (slowness) up to cryogenic testing temperatures. This behavior is unusual, because in traditional structural materials (austenitic steel, Hadfield steel) an increase in strength is accompanied by an increase in the brittleness of the composite.
At present, the Laboratory of Physics of High-Strength Crystals’ staff is studying high-entropy alloys - FeNiCoCrMn and (CoCrFeNi) 94Al4Ti2.