Effect of Thermomechanical Treatment on Functional Properties of Biodegradable Fe-30Mn-5Si Shape Memory Alloy

The processes of structure formation in Ti-Ni and in Ti-Nb-Zr, Ti-Nb-Ta shape memory alloys (SMA) under thermomechanical treatment (TMT) were studied. The TMT comprised cold rolling with true strains from e=0.25 to 2 and post-deformation annealing. Differences in these processes between two groups of alloys are considered. The main conclusions are as follows: nanostructures created by TMT are useful for radical improvement of the SMA functional properties, and an optimum nanostructure (nanocrystalline structure, nanosubgrained structure or theirmixture) should be selected by taking into account other structural and technological factors.

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Texture Formation through Thermomechanical Treatment and Its Effect on Superelasticity in Mg–Sc Shape Memory Alloy

MATERIALS TRANSACTIONS ◽

10.2320/matertrans.mt-m2020244 ◽

2020 ◽

Vol 61 (12) ◽

pp. 2270-2275

Author(s):

Keisuke Yamagishi ◽

Daisuke Ando ◽

Yuji Sutou ◽

Yukiko Ogawa

Keyword(s):

Shape Memory Alloy ◽

Shape Memory ◽

Thermomechanical Treatment ◽

Texture Formation

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Thermo-Mechanical and Functional Properties of NiTi Shape Memory Alloy at High Strain Rate Loading

Materials Science Foundations ◽

10.4028/www.scientific.net/msfo.81-82.457 ◽

2015 ◽

Vol 81-82 ◽

pp. 457-479 ◽

Cited By ~ 1

Author(s):

Anatoly Danilov ◽

Alexander Razov

Keyword(s):

Shape Memory Alloy ◽

High Strain Rate ◽

Strain Rate ◽

Shape Memory ◽

Functional Properties ◽

High Strain ◽

Niti Shape Memory Alloy ◽

Strain Rate Loading

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Creation of Substructure and Nanostructure in Thermomechanical Treatment and Control of Functional Properties of Ti - Ni Alloys with Shape Memory Effect

Metal Science and Heat Treatment ◽

10.1007/s11041-005-0049-8 ◽

2005 ◽

Vol 47 (5-6) ◽

pp. 182-187 ◽

Cited By ~ 18

Author(s):

S. D. Prokoshkin ◽

V. Brailovskii ◽

I. Yu. Khmelevskaya ◽

S. V. Dobatkin ◽

K. E. Inaekyan ◽

...

Keyword(s):

Shape Memory ◽

Shape Memory Effect ◽

Thermomechanical Treatment ◽

Memory Effect ◽

Functional Properties ◽

Ni Alloys ◽

And Control

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On Functional Behavior of Strain-Aged Ti-Ni Alloy

Advances in Science and Technology ◽

10.4028/www.scientific.net/ast.59.162 ◽

2008 ◽

Vol 59 ◽

pp. 162-167 ◽

Cited By ~ 1

Author(s):

Elena P. Ryklina ◽

Sergey Prokoshkin ◽

A.A. Chernavina ◽

Natasha N. Perevoshchikova

Keyword(s):

Shape Memory ◽

Thermomechanical Treatment ◽

Functional Properties ◽

Shape Recovery ◽

Critical Temperatures ◽

Functional Behavior ◽

Bending Mode ◽

Ni Alloy ◽

External Training ◽

Loading Modes

The functional properties of the Shape Memory Alloys (SMA): critical temperatures, recovery strain, shape recovery rate, two-way shape memory effect (TWSME) value, residual strain etc are determined by an alloy structure which is effectively regulated by thermomechanical treatment. External training parameters strongly affect the final properties as well. The main of them are as follows: strain and loading modes, loading temperature regime (phase state under deformation), load value, loading time, number of training cycles. Actual technical and medical SME articles are functioning on bending mode in most cases. Nevertheless, the influence of external training parameters under bending on properties was not systematically studied. The present work relates to study the combined influence of structure realized under various Low- Temperature Thermomechanical Treatment (LTMT) regimes, including isothermal annealing (strain aging), and external training parameters under bending on functional properties of Ti- 50.7at.%Ni alloy. Variation of training parameters enables additional regulation of final functional properties. The obtained results can be used for development elements functioning in conditions of TWSME realization.

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