Phase Transformation and Microstructure of Ti50Ni48-xFe2Ndx Shape Memory Alloys

Wang Jian'gan; Liu Fushun

doi:10.1016/S1000-9361(08)60107-7

Phase Transformation and Microstructure of Ti₅₀Ni_48-xFe₂Nd_x Shape Memory Alloys

Wang Jian'gan
, Liu Fushun

Beihang University

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

6 Scopus citations

Abstract

The influences of rare earth element Nd on the phase transformation and the microstructure of Ti₅₀Ni_48-xFe₂Nd_x shape memory alloys are investigated by means of electrical resistivity, optical microscopy, electron probe microanalyzer, and X-ray diffraction. The results show that TiNiFe alloys with different Nd contents exhibit two-step martensitic transformation. The start temperature of martensitic transformation increases sharply from 212 K to 267 K when 0.1 at.% Nd is added in, and then decreases gradually if Nd content further increases. The microstructure of TiNiFeNd quaternary alloys consists of TiNi matrix, Ti₂Ni second phase, and Nd₃Ni intermetallic compound. The spherical Nd₃Ni precipitate-particles evenly disperse in the matrix.

Original language	English
Pages (from-to)	334-338
Number of pages	5
Journal	Chinese Journal of Aeronautics
Volume	22
Issue number	3
DOIs	https://doi.org/10.1016/S1000-9361(08)60107-7
State	Published - Jun 2009
Externally published	Yes

Keywords

martensitic transformation
microstructure
NdNi
rare earths
shape memory alloys
TiNiFeNd

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10.1016/S1000-9361(08)60107-7

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title = "Phase Transformation and Microstructure of Ti50Ni48-xFe2Ndx Shape Memory Alloys",

abstract = "The influences of rare earth element Nd on the phase transformation and the microstructure of Ti50Ni48-xFe2Ndx shape memory alloys are investigated by means of electrical resistivity, optical microscopy, electron probe microanalyzer, and X-ray diffraction. The results show that TiNiFe alloys with different Nd contents exhibit two-step martensitic transformation. The start temperature of martensitic transformation increases sharply from 212 K to 267 K when 0.1 at.\% Nd is added in, and then decreases gradually if Nd content further increases. The microstructure of TiNiFeNd quaternary alloys consists of TiNi matrix, Ti2Ni second phase, and Nd3Ni intermetallic compound. The spherical Nd3Ni precipitate-particles evenly disperse in the matrix.",

keywords = "martensitic transformation, microstructure, NdNi, rare earths, shape memory alloys, TiNiFeNd",

author = "Wang Jian'gan and Liu Fushun",

year = "2009",

month = jun,

doi = "10.1016/S1000-9361(08)60107-7",

language = "英语",

volume = "22",

pages = "334--338",

journal = "Chinese Journal of Aeronautics",

issn = "1000-9361",

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number = "3",

}

TY - JOUR

T1 - Phase Transformation and Microstructure of Ti50Ni48-xFe2Ndx Shape Memory Alloys

AU - Jian'gan, Wang

AU - Fushun, Liu

PY - 2009/6

Y1 - 2009/6

N2 - The influences of rare earth element Nd on the phase transformation and the microstructure of Ti50Ni48-xFe2Ndx shape memory alloys are investigated by means of electrical resistivity, optical microscopy, electron probe microanalyzer, and X-ray diffraction. The results show that TiNiFe alloys with different Nd contents exhibit two-step martensitic transformation. The start temperature of martensitic transformation increases sharply from 212 K to 267 K when 0.1 at.% Nd is added in, and then decreases gradually if Nd content further increases. The microstructure of TiNiFeNd quaternary alloys consists of TiNi matrix, Ti2Ni second phase, and Nd3Ni intermetallic compound. The spherical Nd3Ni precipitate-particles evenly disperse in the matrix.

AB - The influences of rare earth element Nd on the phase transformation and the microstructure of Ti50Ni48-xFe2Ndx shape memory alloys are investigated by means of electrical resistivity, optical microscopy, electron probe microanalyzer, and X-ray diffraction. The results show that TiNiFe alloys with different Nd contents exhibit two-step martensitic transformation. The start temperature of martensitic transformation increases sharply from 212 K to 267 K when 0.1 at.% Nd is added in, and then decreases gradually if Nd content further increases. The microstructure of TiNiFeNd quaternary alloys consists of TiNi matrix, Ti2Ni second phase, and Nd3Ni intermetallic compound. The spherical Nd3Ni precipitate-particles evenly disperse in the matrix.

KW - martensitic transformation

KW - microstructure

KW - NdNi

KW - rare earths

KW - shape memory alloys

KW - TiNiFeNd

UR - https://www.scopus.com/pages/publications/67649159421

U2 - 10.1016/S1000-9361(08)60107-7

DO - 10.1016/S1000-9361(08)60107-7

M3 - 文章

AN - SCOPUS:67649159421

SN - 1000-9361

VL - 22

SP - 334

EP - 338

JO - Chinese Journal of Aeronautics

JF - Chinese Journal of Aeronautics

IS - 3

ER -

Phase Transformation and Microstructure of Ti₅₀Ni_48-xFe₂Nd_x Shape Memory Alloys

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Keywords

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