Transmission electron microscopy investigation of microstructures in low-hysteresis alloys with special lattice parameters

Rémi Delville; Dominique Schryvers; Zhiyong Zhang; Richard D. James

doi:10.1016/j.scriptamat.2008.10.025

Transmission electron microscopy investigation of microstructures in low-hysteresis alloys with special lattice parameters

Rémi Delville
, Dominique Schryvers
, Zhiyong Zhang
, Richard D. James

Aerospace Engineering and Mechanics

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

80 Scopus citations

Abstract

A sharp drop in hysteresis is observed for shape memory alloys satisfying the compatibility condition between austenite and martensite, i.e. λ₂ = 1, where λ₂ is the middle eigenvalue of the transformation strain matrix. The present work investigates the evolution of microstructure by transmission electron microscopy as the composition of the Ti₅₀Ni_50-xPd_x system is systemically tuned to achieve the condition λ₂ = 1. Changes in morphology, twinning density and twinning modes are reported along with twinless martensite and exact austenite-martensite interfaces.

Original language	English (US)
Pages (from-to)	293-296
Number of pages	4
Journal	Scripta Materialia
Volume	60
Issue number	5
DOIs	https://doi.org/10.1016/j.scriptamat.2008.10.025
State	Published - Mar 2009

Bibliographical note

Copyright:
Copyright 2009 Elsevier B.V., All rights reserved.

Keywords

Hysteresis
Martensitic phase transformation
Shape memory alloys (SMA)
Transmission electron microscopy (TEM)
Twinning

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10.1016/j.scriptamat.2008.10.025

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title = "Transmission electron microscopy investigation of microstructures in low-hysteresis alloys with special lattice parameters",

abstract = "A sharp drop in hysteresis is observed for shape memory alloys satisfying the compatibility condition between austenite and martensite, i.e. λ2 = 1, where λ2 is the middle eigenvalue of the transformation strain matrix. The present work investigates the evolution of microstructure by transmission electron microscopy as the composition of the Ti50Ni50-xPdx system is systemically tuned to achieve the condition λ2 = 1. Changes in morphology, twinning density and twinning modes are reported along with twinless martensite and exact austenite-martensite interfaces.",

keywords = "Hysteresis, Martensitic phase transformation, Shape memory alloys (SMA), Transmission electron microscopy (TEM), Twinning",

author = "R{\'e}mi Delville and Dominique Schryvers and Zhiyong Zhang and James, \{Richard D.\}",

year = "2009",

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doi = "10.1016/j.scriptamat.2008.10.025",

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pages = "293--296",

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T1 - Transmission electron microscopy investigation of microstructures in low-hysteresis alloys with special lattice parameters

AU - Delville, Rémi

AU - Schryvers, Dominique

AU - Zhang, Zhiyong

AU - James, Richard D.

PY - 2009/3

Y1 - 2009/3

N2 - A sharp drop in hysteresis is observed for shape memory alloys satisfying the compatibility condition between austenite and martensite, i.e. λ2 = 1, where λ2 is the middle eigenvalue of the transformation strain matrix. The present work investigates the evolution of microstructure by transmission electron microscopy as the composition of the Ti50Ni50-xPdx system is systemically tuned to achieve the condition λ2 = 1. Changes in morphology, twinning density and twinning modes are reported along with twinless martensite and exact austenite-martensite interfaces.

AB - A sharp drop in hysteresis is observed for shape memory alloys satisfying the compatibility condition between austenite and martensite, i.e. λ2 = 1, where λ2 is the middle eigenvalue of the transformation strain matrix. The present work investigates the evolution of microstructure by transmission electron microscopy as the composition of the Ti50Ni50-xPdx system is systemically tuned to achieve the condition λ2 = 1. Changes in morphology, twinning density and twinning modes are reported along with twinless martensite and exact austenite-martensite interfaces.

KW - Hysteresis

KW - Martensitic phase transformation

KW - Shape memory alloys (SMA)

KW - Transmission electron microscopy (TEM)

KW - Twinning

UR - https://www.scopus.com/pages/publications/57949102371

UR - https://www.scopus.com/pages/publications/57949102371#tab=citedBy

U2 - 10.1016/j.scriptamat.2008.10.025

DO - 10.1016/j.scriptamat.2008.10.025

M3 - Article

AN - SCOPUS:57949102371

SN - 1359-6462

VL - 60

SP - 293

EP - 296

JO - Scripta Materialia

JF - Scripta Materialia

IS - 5

ER -

Transmission electron microscopy investigation of microstructures in low-hysteresis alloys with special lattice parameters

Abstract

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Keywords

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