Microstructural dependence on middle eigenvalue in TiNiAu

H. Shi; R. Delville; V. Srivastava; R. D. James; D. Schryvers

doi:10.1016/j.jallcom.2013.08.132

Microstructural dependence on middle eigenvalue in TiNiAu

H. Shi, R. Delville, V. Srivastava, R. D. James, D. Schryvers

Aerospace Engineering and Mechanics

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

18 Scopus citations

Abstract

The microstructure of various compounds of the TiNiAu alloy system is investigated by transmission electron microscopy in relation with changing lattice parameters improving the compatibility conditions between austenite and martensite expressed by the λ2 = 1 equation based on the Geometrically NonLinear Theory of Martensite (GNLTM). Although local differences in microstructure are observed, when increasing the gold content compound twins are replaced by Type I twins, while twinned lamellar structures are replaced by untwinned plates and self-accommodating structures when λ2 = 1 is approached, all confirming the predictions of the GNLTM.

Original language	English (US)
Pages (from-to)	703-707
Number of pages	5
Journal	Journal of Alloys and Compounds
Volume	582
DOIs	https://doi.org/10.1016/j.jallcom.2013.08.132
State	Published - 2014

Bibliographical note

Funding Information:
H.S. thanks the CONNEC “Connecting Europe and China through Interuniversity Exchange”, an Erasmus Mundus project, and the FWO research project G.0576.09N for supporting this work.

Keywords

Austenite
Hysteresis
Martensite
Shape memory alloys (SMAs)
Transmission electron microscopy (TEM)
Twinning

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abstract = "The microstructure of various compounds of the TiNiAu alloy system is investigated by transmission electron microscopy in relation with changing lattice parameters improving the compatibility conditions between austenite and martensite expressed by the λ2 = 1 equation based on the Geometrically NonLinear Theory of Martensite (GNLTM). Although local differences in microstructure are observed, when increasing the gold content compound twins are replaced by Type I twins, while twinned lamellar structures are replaced by untwinned plates and self-accommodating structures when λ2 = 1 is approached, all confirming the predictions of the GNLTM.",

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author = "H. Shi and R. Delville and V. Srivastava and James, {R. D.} and D. Schryvers",

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AU - Shi, H.

AU - Delville, R.

AU - Srivastava, V.

AU - James, R. D.

AU - Schryvers, D.

N1 - Funding Information: H.S. thanks the CONNEC “Connecting Europe and China through Interuniversity Exchange”, an Erasmus Mundus project, and the FWO research project G.0576.09N for supporting this work.

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Y1 - 2014

N2 - The microstructure of various compounds of the TiNiAu alloy system is investigated by transmission electron microscopy in relation with changing lattice parameters improving the compatibility conditions between austenite and martensite expressed by the λ2 = 1 equation based on the Geometrically NonLinear Theory of Martensite (GNLTM). Although local differences in microstructure are observed, when increasing the gold content compound twins are replaced by Type I twins, while twinned lamellar structures are replaced by untwinned plates and self-accommodating structures when λ2 = 1 is approached, all confirming the predictions of the GNLTM.

AB - The microstructure of various compounds of the TiNiAu alloy system is investigated by transmission electron microscopy in relation with changing lattice parameters improving the compatibility conditions between austenite and martensite expressed by the λ2 = 1 equation based on the Geometrically NonLinear Theory of Martensite (GNLTM). Although local differences in microstructure are observed, when increasing the gold content compound twins are replaced by Type I twins, while twinned lamellar structures are replaced by untwinned plates and self-accommodating structures when λ2 = 1 is approached, all confirming the predictions of the GNLTM.

KW - Austenite

KW - Hysteresis

KW - Martensite

KW - Shape memory alloys (SMAs)

KW - Transmission electron microscopy (TEM)

KW - Twinning

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JO - Journal of Alloys and Compounds

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ER -

Microstructural dependence on middle eigenvalue in TiNiAu

Abstract

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Keywords

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