Mechanical behaviour and functional properties of porous Ti-45 at. % Ni alloy produced by self-propagating high-temperature synthesis

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Mechanical behaviour and functional properties of porous Ti-45 at. % Ni alloy produced by self-propagating high-temperature synthesis. / Resnina, N.; Belyaev, S.; Voronkov, A.; Gracheva, A.

In: Smart Materials and Structures, Vol. 25, No. 5, 055018, 07.04.2016.

Research output: Contribution to journal › Article › peer-review

BibTeX

@article{0bb94ecfad4e4171b6d9efccc5574d5e,

title = "Mechanical behaviour and functional properties of porous Ti-45 at. % Ni alloy produced by self-propagating high-temperature synthesis",

abstract = "The mechanical behaviour and shape memory effects were studied in the porous Ti-45.0 at. % Ni alloy produced by self-propagating high-temperature synthesis. It is shown that the porous Ti-45.0 at % Ni alloy is deformed by the same mechanisms as a cast Ti50Ni50 alloy. At low temperatures, the deformation of the porous alloy is realised via martensite reorientation at a low yield limit and by dislocation slip at a high yield limit. At high temperatures (in the austenite B2 phase) the porous Ti-45.0 at % Ni alloy is deformed by the stress-induced martensite at a low yield limit and by dislocation slip at a high yield limit. The pseudoelasticity effect is not found in this alloy, while the transformation plasticity and the shape memory effects are observed on cooling and heating under a constant load. The values of the transformation plasticity, and the shape memory effects, depend linearly on the stress acting on cooling and heating. The temperatures of the martensitic transformation increase linearly when the stress rises up to 80 MPa. The porous Ti-45.0 at % Ni alloy accumulates an irreversible strain on cooling and heating and demonstrates unstable functional behaviour during thermal cycling.",

keywords = "mechanical behavior, porous TiNi shape memory alloy, self-propagating high-temperature synthesis, shape memory effects",

author = "N. Resnina and S. Belyaev and A. Voronkov and A. Gracheva",

year = "2016",

month = apr,

day = "7",

doi = "10.1088/0964-1726/25/5/055018",

language = "English",

volume = "25",

journal = "Smart Materials and Structures",

issn = "0964-1726",

publisher = "IOP Publishing Ltd.",

number = "5",

}

RIS

TY - JOUR

T1 - Mechanical behaviour and functional properties of porous Ti-45 at. % Ni alloy produced by self-propagating high-temperature synthesis

AU - Resnina, N.

AU - Belyaev, S.

AU - Voronkov, A.

AU - Gracheva, A.

PY - 2016/4/7

Y1 - 2016/4/7

N2 - The mechanical behaviour and shape memory effects were studied in the porous Ti-45.0 at. % Ni alloy produced by self-propagating high-temperature synthesis. It is shown that the porous Ti-45.0 at % Ni alloy is deformed by the same mechanisms as a cast Ti50Ni50 alloy. At low temperatures, the deformation of the porous alloy is realised via martensite reorientation at a low yield limit and by dislocation slip at a high yield limit. At high temperatures (in the austenite B2 phase) the porous Ti-45.0 at % Ni alloy is deformed by the stress-induced martensite at a low yield limit and by dislocation slip at a high yield limit. The pseudoelasticity effect is not found in this alloy, while the transformation plasticity and the shape memory effects are observed on cooling and heating under a constant load. The values of the transformation plasticity, and the shape memory effects, depend linearly on the stress acting on cooling and heating. The temperatures of the martensitic transformation increase linearly when the stress rises up to 80 MPa. The porous Ti-45.0 at % Ni alloy accumulates an irreversible strain on cooling and heating and demonstrates unstable functional behaviour during thermal cycling.

AB - The mechanical behaviour and shape memory effects were studied in the porous Ti-45.0 at. % Ni alloy produced by self-propagating high-temperature synthesis. It is shown that the porous Ti-45.0 at % Ni alloy is deformed by the same mechanisms as a cast Ti50Ni50 alloy. At low temperatures, the deformation of the porous alloy is realised via martensite reorientation at a low yield limit and by dislocation slip at a high yield limit. At high temperatures (in the austenite B2 phase) the porous Ti-45.0 at % Ni alloy is deformed by the stress-induced martensite at a low yield limit and by dislocation slip at a high yield limit. The pseudoelasticity effect is not found in this alloy, while the transformation plasticity and the shape memory effects are observed on cooling and heating under a constant load. The values of the transformation plasticity, and the shape memory effects, depend linearly on the stress acting on cooling and heating. The temperatures of the martensitic transformation increase linearly when the stress rises up to 80 MPa. The porous Ti-45.0 at % Ni alloy accumulates an irreversible strain on cooling and heating and demonstrates unstable functional behaviour during thermal cycling.

KW - mechanical behavior

KW - porous TiNi shape memory alloy

KW - self-propagating high-temperature synthesis

KW - shape memory effects

UR - http://www.scopus.com/inward/record.url?scp=84964467122&partnerID=8YFLogxK

U2 - 10.1088/0964-1726/25/5/055018

DO - 10.1088/0964-1726/25/5/055018

M3 - Article

AN - SCOPUS:84964467122

VL - 25

JO - Smart Materials and Structures

JF - Smart Materials and Structures

SN - 0964-1726

IS - 5

M1 - 055018

ER -

ID: 9332237