Influence of crystalline phase volume fraction on the two-way shape memory effect in amorphous–crystalline Ti40.7Hf9.5Ni44.8Cu5 alloy

N. Resnina, S. Belyaev, V. Slesarenko, A. Shelyakov

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Abstract

The two-way shape memory effect (TWSME) has been studied in an amorphous–crystalline thin ribbon of Ti40.7Hf9.5Ni44.8Cu5 shape memory alloy with different volume fractions of the crystalline phase. It is found that an increase in the volume fraction of the crystalline phase results in a non-monotonic variation in the value of the TWSME. A maximum strain of 1.1% is observed in the thin ribbon with a 50% crystalline phase. It is found that the TWSME in amorphous–crystalline Ti40.7Hf9.5Ni44.8Cu5 alloy is due to two mechanisms: the formation of high internal stresses on the amorphous/crystalline interfaces due to incompatible strain in amorphous and crystalline phases and the stress caused by defects induced in the crystalline phase during deformation. If the volume fraction of the crystalline phase is 50% or less, then the main contribution to the total TWSME is given by the formation of the internal stresses on the amorphous/crystalline interfaces. In this case, the TWSME value depends on the density of the amo
Original languageEnglish
Pages (from-to)65-71
Number of pages7
JournalMaterials Science & Engineering A: Structural Materials: Properties, Microstructure and Processing
Volume627
DOIs
StatePublished - 2015

Keywords

  • Shape memory alloys Amorphous–crystalline alloy Two-way shape memory effect Thin ribbons

Cite this

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title = "Influence of crystalline phase volume fraction on the two-way shape memory effect in amorphous–crystalline Ti40.7Hf9.5Ni44.8Cu5 alloy",
abstract = "The two-way shape memory effect (TWSME) has been studied in an amorphous–crystalline thin ribbon of Ti40.7Hf9.5Ni44.8Cu5 shape memory alloy with different volume fractions of the crystalline phase. It is found that an increase in the volume fraction of the crystalline phase results in a non-monotonic variation in the value of the TWSME. A maximum strain of 1.1{\%} is observed in the thin ribbon with a 50{\%} crystalline phase. It is found that the TWSME in amorphous–crystalline Ti40.7Hf9.5Ni44.8Cu5 alloy is due to two mechanisms: the formation of high internal stresses on the amorphous/crystalline interfaces due to incompatible strain in amorphous and crystalline phases and the stress caused by defects induced in the crystalline phase during deformation. If the volume fraction of the crystalline phase is 50{\%} or less, then the main contribution to the total TWSME is given by the formation of the internal stresses on the amorphous/crystalline interfaces. In this case, the TWSME value depends on the density of the amo",
keywords = "Shape memory alloys Amorphous–crystalline alloy Two-way shape memory effect Thin ribbons",
author = "N. Resnina and S. Belyaev and V. Slesarenko and A. Shelyakov",
year = "2015",
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language = "English",
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journal = "Materials Science & Engineering A: Structural Materials: Properties, Microstructure and Processing",
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TY - JOUR

T1 - Influence of crystalline phase volume fraction on the two-way shape memory effect in amorphous–crystalline Ti40.7Hf9.5Ni44.8Cu5 alloy

AU - Resnina, N.

AU - Belyaev, S.

AU - Slesarenko, V.

AU - Shelyakov, A.

PY - 2015

Y1 - 2015

N2 - The two-way shape memory effect (TWSME) has been studied in an amorphous–crystalline thin ribbon of Ti40.7Hf9.5Ni44.8Cu5 shape memory alloy with different volume fractions of the crystalline phase. It is found that an increase in the volume fraction of the crystalline phase results in a non-monotonic variation in the value of the TWSME. A maximum strain of 1.1% is observed in the thin ribbon with a 50% crystalline phase. It is found that the TWSME in amorphous–crystalline Ti40.7Hf9.5Ni44.8Cu5 alloy is due to two mechanisms: the formation of high internal stresses on the amorphous/crystalline interfaces due to incompatible strain in amorphous and crystalline phases and the stress caused by defects induced in the crystalline phase during deformation. If the volume fraction of the crystalline phase is 50% or less, then the main contribution to the total TWSME is given by the formation of the internal stresses on the amorphous/crystalline interfaces. In this case, the TWSME value depends on the density of the amo

AB - The two-way shape memory effect (TWSME) has been studied in an amorphous–crystalline thin ribbon of Ti40.7Hf9.5Ni44.8Cu5 shape memory alloy with different volume fractions of the crystalline phase. It is found that an increase in the volume fraction of the crystalline phase results in a non-monotonic variation in the value of the TWSME. A maximum strain of 1.1% is observed in the thin ribbon with a 50% crystalline phase. It is found that the TWSME in amorphous–crystalline Ti40.7Hf9.5Ni44.8Cu5 alloy is due to two mechanisms: the formation of high internal stresses on the amorphous/crystalline interfaces due to incompatible strain in amorphous and crystalline phases and the stress caused by defects induced in the crystalline phase during deformation. If the volume fraction of the crystalline phase is 50% or less, then the main contribution to the total TWSME is given by the formation of the internal stresses on the amorphous/crystalline interfaces. In this case, the TWSME value depends on the density of the amo

KW - Shape memory alloys Amorphous–crystalline alloy Two-way shape memory effect Thin ribbons

U2 - 10.1016/j.msea.2014.12.119

DO - 10.1016/j.msea.2014.12.119

M3 - Article

VL - 627

SP - 65

EP - 71

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

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

SN - 0921-5093

ER -