Shape memory behavior of high strength Ni54Ti46 alloys

H. E. Karaca; I. Kaya; H. Tobe; B. Basaran; M. Nagasako; R. Kainuma; Y. Chumlyakov

doi:10.1016/j.msea.2013.04.102

Shape memory behavior of high strength Ni₅₄Ti₄₆ alloys

H. E. Karaca, I. Kaya, H. Tobe, B. Basaran, M. Nagasako, R. Kainuma, Y. Chumlyakov

Mechanical Engineering

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

44 Scopus citations

Abstract

Shape memory behavior of highly Ni-rich Ni₅₄Ti₄₆ alloys was studied after aging (550°C, 3h, furnace cooling). A sequence of phase transformations was observed and the shape memory behavior is found to be highly stress dependent. After aging, a transformation strain of 1% with low temperature hysteresis is observed under an ultra high stress level of 1500MPa in compression. Moreover, superelastic response with 3% total strain can be obtained even when high stress level of 1500MPa is applied.

Original language	English
Pages (from-to)	66-70
Number of pages	5
Journal	Materials Science & Engineering A: Structural Materials: Properties, Microstructure and Processing
Volume	580
DOIs	https://doi.org/10.1016/j.msea.2013.04.102
State	Published - Sep 5 2013

Keywords

High strength
Mechanical characterization
NiTi
R-phase transformation
Shape memory alloys

ASJC Scopus subject areas

Materials Science (all)
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering

Access to Document

10.1016/j.msea.2013.04.102

Cite this

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title = "Shape memory behavior of high strength Ni54Ti46 alloys",

abstract = "Shape memory behavior of highly Ni-rich Ni54Ti46 alloys was studied after aging (550°C, 3h, furnace cooling). A sequence of phase transformations was observed and the shape memory behavior is found to be highly stress dependent. After aging, a transformation strain of 1% with low temperature hysteresis is observed under an ultra high stress level of 1500MPa in compression. Moreover, superelastic response with 3% total strain can be obtained even when high stress level of 1500MPa is applied.",

keywords = "High strength, Mechanical characterization, NiTi, R-phase transformation, Shape memory alloys",

author = "Karaca, {H. E.} and I. Kaya and H. Tobe and B. Basaran and M. Nagasako and R. Kainuma and Y. Chumlyakov",

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doi = "10.1016/j.msea.2013.04.102",

language = "English",

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T1 - Shape memory behavior of high strength Ni54Ti46 alloys

AU - Karaca, H. E.

AU - Kaya, I.

AU - Tobe, H.

AU - Basaran, B.

AU - Nagasako, M.

AU - Kainuma, R.

AU - Chumlyakov, Y.

PY - 2013/9/5

Y1 - 2013/9/5

N2 - Shape memory behavior of highly Ni-rich Ni54Ti46 alloys was studied after aging (550°C, 3h, furnace cooling). A sequence of phase transformations was observed and the shape memory behavior is found to be highly stress dependent. After aging, a transformation strain of 1% with low temperature hysteresis is observed under an ultra high stress level of 1500MPa in compression. Moreover, superelastic response with 3% total strain can be obtained even when high stress level of 1500MPa is applied.

AB - Shape memory behavior of highly Ni-rich Ni54Ti46 alloys was studied after aging (550°C, 3h, furnace cooling). A sequence of phase transformations was observed and the shape memory behavior is found to be highly stress dependent. After aging, a transformation strain of 1% with low temperature hysteresis is observed under an ultra high stress level of 1500MPa in compression. Moreover, superelastic response with 3% total strain can be obtained even when high stress level of 1500MPa is applied.

KW - High strength

KW - Mechanical characterization

KW - NiTi

KW - R-phase transformation

KW - Shape memory alloys

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EP - 70

JO - Materials Science & Engineering A: Structural Materials: Properties, Microstructure and Processing

JF - Materials Science & Engineering A: Structural Materials: Properties, Microstructure and Processing

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