The microstructure and thermomechanical behavior of Ti50Ni47Fe2.5Nd0.5 shape memory alloys

J. G. Wang; F. S. Liu; J. M. Cao

doi:10.1016/j.msea.2010.06.004

The microstructure and thermomechanical behavior of Ti₅₀Ni₄₇Fe_2.5Nd_0.5 shape memory alloys

J. G. Wang
, F. S. Liu
, J. M. Cao

Xi’an Rare Metal Materials Institute Co. Ltd
Beihang University

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

12 Scopus citations

Abstract

This work presents a study of a novel Ti₅₀Ni₄₇Fe_2.5Nd_0.5 shape memory alloy by EPMA, E-R analysis and tensile tests. Structural characterization shows the alloy consists of TiNiFe matrix, Nd₃Ni and Ti₂Ni intermetallic compounds with Fe solute. The latter two phases are well distributed in the matrix. Compared with Ti₅₀Ni_47.5Fe_2.5 alloys without rare earth Nd, the novel alloy does not change the two-stage martensitic transformation behavior, however, characteristic temperatures increase rapidly. The critical stress needed for inducing martensitic transformation is near linear relationship with the increasing of the testing temperature above M_s, which is in good agreement with Clausius-Clapeyron equation. The novel alloy exhibits an improved shape memory effect as a consequence of precipitation strengthening and the maximum recoverable strain attains to 7.8%.

Original language	English
Pages (from-to)	6200-6204
Number of pages	5
Journal	Materials Science and Engineering: A
Volume	527
Issue number	23
DOIs	https://doi.org/10.1016/j.msea.2010.06.004
State	Published - 2010
Externally published	Yes

Keywords

Microstructure
Rare earth
Shape memory alloy
Thermomechanical properties
TiNiFeNd

Access to Document

10.1016/j.msea.2010.06.004

Cite this

@article{22bf14d6515042cd8f74a6adfa8930f8,

title = "The microstructure and thermomechanical behavior of Ti50Ni47Fe2.5Nd0.5 shape memory alloys",

abstract = "This work presents a study of a novel Ti50Ni47Fe2.5Nd0.5 shape memory alloy by EPMA, E-R analysis and tensile tests. Structural characterization shows the alloy consists of TiNiFe matrix, Nd3Ni and Ti2Ni intermetallic compounds with Fe solute. The latter two phases are well distributed in the matrix. Compared with Ti50Ni47.5Fe2.5 alloys without rare earth Nd, the novel alloy does not change the two-stage martensitic transformation behavior, however, characteristic temperatures increase rapidly. The critical stress needed for inducing martensitic transformation is near linear relationship with the increasing of the testing temperature above Ms, which is in good agreement with Clausius-Clapeyron equation. The novel alloy exhibits an improved shape memory effect as a consequence of precipitation strengthening and the maximum recoverable strain attains to 7.8\%.",

keywords = "Microstructure, Rare earth, Shape memory alloy, Thermomechanical properties, TiNiFeNd",

author = "Wang, \{J. G.\} and Liu, \{F. S.\} and Cao, \{J. M.\}",

year = "2010",

doi = "10.1016/j.msea.2010.06.004",

language = "英语",

volume = "527",

pages = "6200--6204",

journal = "Materials Science and Engineering: A",

issn = "0921-5093",

publisher = "Elsevier Ltd",

number = "23",

}

TY - JOUR

T1 - The microstructure and thermomechanical behavior of Ti50Ni47Fe2.5Nd0.5 shape memory alloys

AU - Wang, J. G.

AU - Liu, F. S.

AU - Cao, J. M.

PY - 2010

Y1 - 2010

N2 - This work presents a study of a novel Ti50Ni47Fe2.5Nd0.5 shape memory alloy by EPMA, E-R analysis and tensile tests. Structural characterization shows the alloy consists of TiNiFe matrix, Nd3Ni and Ti2Ni intermetallic compounds with Fe solute. The latter two phases are well distributed in the matrix. Compared with Ti50Ni47.5Fe2.5 alloys without rare earth Nd, the novel alloy does not change the two-stage martensitic transformation behavior, however, characteristic temperatures increase rapidly. The critical stress needed for inducing martensitic transformation is near linear relationship with the increasing of the testing temperature above Ms, which is in good agreement with Clausius-Clapeyron equation. The novel alloy exhibits an improved shape memory effect as a consequence of precipitation strengthening and the maximum recoverable strain attains to 7.8%.

AB - This work presents a study of a novel Ti50Ni47Fe2.5Nd0.5 shape memory alloy by EPMA, E-R analysis and tensile tests. Structural characterization shows the alloy consists of TiNiFe matrix, Nd3Ni and Ti2Ni intermetallic compounds with Fe solute. The latter two phases are well distributed in the matrix. Compared with Ti50Ni47.5Fe2.5 alloys without rare earth Nd, the novel alloy does not change the two-stage martensitic transformation behavior, however, characteristic temperatures increase rapidly. The critical stress needed for inducing martensitic transformation is near linear relationship with the increasing of the testing temperature above Ms, which is in good agreement with Clausius-Clapeyron equation. The novel alloy exhibits an improved shape memory effect as a consequence of precipitation strengthening and the maximum recoverable strain attains to 7.8%.

KW - Microstructure

KW - Rare earth

KW - Shape memory alloy

KW - Thermomechanical properties

KW - TiNiFeNd

UR - https://www.scopus.com/pages/publications/77955473724

U2 - 10.1016/j.msea.2010.06.004

DO - 10.1016/j.msea.2010.06.004

M3 - 文章

AN - SCOPUS:77955473724

SN - 0921-5093

VL - 527

SP - 6200

EP - 6204

JO - Materials Science and Engineering: A

JF - Materials Science and Engineering: A

IS - 23

ER -

The microstructure and thermomechanical behavior of Ti₅₀Ni₄₇Fe_2.5Nd_0.5 shape memory alloys

Abstract

Keywords

Access to Document

Other files and links

Fingerprint

Cite this