Stress-induced martensitic transformations in NiTi and NiTi-TiC composites investigated by neutron diffraction

R. Vaidyanathan; M. A M Bourke; D. C. Dunand

doi:10.1016/s0921-5093(99)00307-x

Stress-induced martensitic transformations in NiTi and NiTi-TiC composites investigated by neutron diffraction

R. Vaidyanathan, M. A M Bourke, D. C. Dunand^*

^*Corresponding author for this work

Materials Science and Engineering

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

18 Scopus citations

Abstract

Superelastic NiTi (51.0 at.% Ni) specimens reinforced with 0, 10 and 20 vol.% TiC particles were deformed under uniaxial compression while neutron diffraction spectra were collected. The experiments yielded in-situ measurements of the thermoelastic stress-induced transformation. The evolution of austenite/martensite phase fractions and of elastic strains in the reinforcing TiC particles and the austenite matrix were obtained by Rietveld refinement [1] during the loading cycle as the austenite transforms to martensite (and its subsequent back transformation during unloading). Phase fractions and strains are discussed in terms of load transfer in composites where the matrix undergoes a stress-induced phase transformation.

Original language	English (US)
Pages (from-to)	404-409
Number of pages	6
Journal	Materials Science and Engineering A
Volume	273-275
DOIs	https://doi.org/10.1016/s0921-5093(99)00307-x
State	Published - Dec 15 1999

Keywords

Metal matrix composites
Neutron diffraction
Phase transformation
Rietveld refinement
Shape-memory
Superelasticity

ASJC Scopus subject areas

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

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title = "Stress-induced martensitic transformations in NiTi and NiTi-TiC composites investigated by neutron diffraction",

abstract = "Superelastic NiTi (51.0 at.% Ni) specimens reinforced with 0, 10 and 20 vol.% TiC particles were deformed under uniaxial compression while neutron diffraction spectra were collected. The experiments yielded in-situ measurements of the thermoelastic stress-induced transformation. The evolution of austenite/martensite phase fractions and of elastic strains in the reinforcing TiC particles and the austenite matrix were obtained by Rietveld refinement [1] during the loading cycle as the austenite transforms to martensite (and its subsequent back transformation during unloading). Phase fractions and strains are discussed in terms of load transfer in composites where the matrix undergoes a stress-induced phase transformation.",

keywords = "Metal matrix composites, Neutron diffraction, Phase transformation, Rietveld refinement, Shape-memory, Superelasticity",

author = "R. Vaidyanathan and Bourke, {M. A M} and Dunand, {D. C.}",

note = "Funding Information: The Manuel Lujan Jr. Neutron Scattering Center is a national user facility funded by the US DOE (Contract No. W-7405-ENG-36) and by Defense Programs. RV and DCD acknowledge the support of Daimler Benz AG in the form of a research grant. The authors also thank Dr. H. Pettermann and Dr. M.R. Daymond for helpful discussions.",

year = "1999",

month = dec,

day = "15",

doi = "10.1016/s0921-5093(99)00307-x",

language = "English (US)",

volume = "273-275",

pages = "404--409",

journal = "Materials Science & Engineering A: Structural Materials: Properties, Microstructure and Processing",

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TY - JOUR

T1 - Stress-induced martensitic transformations in NiTi and NiTi-TiC composites investigated by neutron diffraction

AU - Vaidyanathan, R.

AU - Bourke, M. A M

AU - Dunand, D. C.

N1 - Funding Information: The Manuel Lujan Jr. Neutron Scattering Center is a national user facility funded by the US DOE (Contract No. W-7405-ENG-36) and by Defense Programs. RV and DCD acknowledge the support of Daimler Benz AG in the form of a research grant. The authors also thank Dr. H. Pettermann and Dr. M.R. Daymond for helpful discussions.

PY - 1999/12/15

Y1 - 1999/12/15

N2 - Superelastic NiTi (51.0 at.% Ni) specimens reinforced with 0, 10 and 20 vol.% TiC particles were deformed under uniaxial compression while neutron diffraction spectra were collected. The experiments yielded in-situ measurements of the thermoelastic stress-induced transformation. The evolution of austenite/martensite phase fractions and of elastic strains in the reinforcing TiC particles and the austenite matrix were obtained by Rietveld refinement [1] during the loading cycle as the austenite transforms to martensite (and its subsequent back transformation during unloading). Phase fractions and strains are discussed in terms of load transfer in composites where the matrix undergoes a stress-induced phase transformation.

AB - Superelastic NiTi (51.0 at.% Ni) specimens reinforced with 0, 10 and 20 vol.% TiC particles were deformed under uniaxial compression while neutron diffraction spectra were collected. The experiments yielded in-situ measurements of the thermoelastic stress-induced transformation. The evolution of austenite/martensite phase fractions and of elastic strains in the reinforcing TiC particles and the austenite matrix were obtained by Rietveld refinement [1] during the loading cycle as the austenite transforms to martensite (and its subsequent back transformation during unloading). Phase fractions and strains are discussed in terms of load transfer in composites where the matrix undergoes a stress-induced phase transformation.

KW - Metal matrix composites

KW - Neutron diffraction

KW - Phase transformation

KW - Rietveld refinement

KW - Shape-memory

KW - Superelasticity

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U2 - 10.1016/s0921-5093(99)00307-x

DO - 10.1016/s0921-5093(99)00307-x

M3 - Article

AN - SCOPUS:0033324292

VL - 273-275

SP - 404

EP - 409

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 -

Stress-induced martensitic transformations in NiTi and NiTi-TiC composites investigated by neutron diffraction

Abstract

Keywords

ASJC Scopus subject areas

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