TOMSK, Jun 20 – RIA Tomsk. Scientists of Tomsk State University (TSU) together with colleagues from Russian Science Foundation (RSF)
and Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) created a
new alloy with shape memory; the development is promising for space, aviation,
automotive, robotics and medicine, the TSU press service reported on Thursday.
It is specified that scientists of the Laboratory for
Physics of High-Strength Crystals of the Siberian Physical-Technical Institute
(SPTI) of TSU participate in the project within the framework of a joint grant
of the Russian Science Foundation and German Research Foundation.
"The scientists of SPTI for the first time
created monocrystals of iron-based alloys (iron-nickel-cobalt-aluminum) with a
fifth element to be replaced – it can be titanium and / or niobium. New materials
can compete with titanium nickelide alloys – the most popular compound, on the
basis of which medical instruments, implants, drives and other structures are
being created", – is said in the statement.
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It is added that new iron-based alloys have a greater
reversibility, that is, the ability to recover after deformation (shape memory
effect), than titanium nickelide. This makes alloys promising materials for the
aviation, aerospace, automotive and robotics industries.
"In iron-based alloys a reversible change in
shape reaches 15%, in nickel-titanium alloys – about 10%. Due to this, sensors
and actuators of iron-based alloys will work more efficiently, as well as the
mechanisms that they set in motion", – the engineer of the TSU Laboratory
for Physics of High-Strength Crystals Anna Eftifeeva is quoted in the message.
According to the head of the laboratory, the professor
Yury Chumlyakov, this result was achieved with the help of a special heat
treatment – a technology for which the scientists of the laboratory have
already received a patent. As developers note, sensors and mechanisms made of a
new iron-based alloy will not only be stronger, but also cheaper than products
made from titanium nickelide.