Evidence of two-length-scale kinetics of R-phase transformation by high-energy X-ray diffraction

Y. D. Wang; Y. Ren; E. W. Huang; G. Wang; Z. H. Nie; L. Zuo; P. K. Liaw

doi:10.1016/j.scriptamat.2010.01.011

Evidence of two-length-scale kinetics of R-phase transformation by high-energy X-ray diffraction

Y. D. Wang, Y. Ren, E. W. Huang, G. Wang, Z. H. Nie, L. Zuo, P. K. Liaw

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

2 Citations (Scopus)

Abstract

The cubic-to-rhombohedral (C-R) phase transition in an AuCd shape memory alloy was investigated by in situ high-energy X-ray diffraction. We present the first direct experimental evidence of two-length-scale phase transition kinetics in this alloy system. It was further found that aging in the R-phase leads to two-way memory "loss", characterized by the reselection of new variants. We attributed this two-way memory "loss" to the internal stresses caused by the defects formed in the off-equilibrium state of the studied AuCd system. © 2010 Acta Materialia Inc.

Original language	English
Pages (from-to)	617-620
Journal	Scripta Materialia
Volume	62
Issue number	8
DOIs	https://doi.org/10.1016/j.scriptamat.2010.01.011
Publication status	Published - Apr 2010
Externally published	Yes

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Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to [email protected].

Research Keywords

Martensitic phase transformation
Phase transformation kinetics
R-phase
Shape memory alloy
X-ray diffraction (XRD)

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10.1016/j.scriptamat.2010.01.011

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title = "Evidence of two-length-scale kinetics of R-phase transformation by high-energy X-ray diffraction",

abstract = "The cubic-to-rhombohedral (C-R) phase transition in an AuCd shape memory alloy was investigated by in situ high-energy X-ray diffraction. We present the first direct experimental evidence of two-length-scale phase transition kinetics in this alloy system. It was further found that aging in the R-phase leads to two-way memory {"}loss{"}, characterized by the reselection of new variants. We attributed this two-way memory {"}loss{"} to the internal stresses caused by the defects formed in the off-equilibrium state of the studied AuCd system. {\textcopyright} 2010 Acta Materialia Inc.",

keywords = "Martensitic phase transformation, Phase transformation kinetics, R-phase, Shape memory alloy, X-ray diffraction (XRD)",

author = "Wang, {Y. D.} and Y. Ren and Huang, {E. W.} and G. Wang and Nie, {Z. H.} and L. Zuo and Liaw, {P. K.}",

note = "Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to [email protected]. ",

year = "2010",

month = apr,

doi = "10.1016/j.scriptamat.2010.01.011",

language = "English",

volume = "62",

pages = "617--620",

journal = "Scripta Materialia",

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publisher = "Acta Materialia Inc",

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TY - JOUR

T1 - Evidence of two-length-scale kinetics of R-phase transformation by high-energy X-ray diffraction

AU - Wang, Y. D.

AU - Ren, Y.

AU - Huang, E. W.

AU - Wang, G.

AU - Nie, Z. H.

AU - Zuo, L.

AU - Liaw, P. K.

N1 - Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to [email protected].

PY - 2010/4

Y1 - 2010/4

N2 - The cubic-to-rhombohedral (C-R) phase transition in an AuCd shape memory alloy was investigated by in situ high-energy X-ray diffraction. We present the first direct experimental evidence of two-length-scale phase transition kinetics in this alloy system. It was further found that aging in the R-phase leads to two-way memory "loss", characterized by the reselection of new variants. We attributed this two-way memory "loss" to the internal stresses caused by the defects formed in the off-equilibrium state of the studied AuCd system. © 2010 Acta Materialia Inc.

AB - The cubic-to-rhombohedral (C-R) phase transition in an AuCd shape memory alloy was investigated by in situ high-energy X-ray diffraction. We present the first direct experimental evidence of two-length-scale phase transition kinetics in this alloy system. It was further found that aging in the R-phase leads to two-way memory "loss", characterized by the reselection of new variants. We attributed this two-way memory "loss" to the internal stresses caused by the defects formed in the off-equilibrium state of the studied AuCd system. © 2010 Acta Materialia Inc.

KW - Martensitic phase transformation

KW - Phase transformation kinetics

KW - R-phase

KW - Shape memory alloy

KW - X-ray diffraction (XRD)

UR - http://www.scopus.com/inward/record.url?scp=76549123862&partnerID=8YFLogxK

UR - https://www.scopus.com/record/pubmetrics.uri?eid=2-s2.0-76549123862&origin=recordpage

U2 - 10.1016/j.scriptamat.2010.01.011

DO - 10.1016/j.scriptamat.2010.01.011

M3 - RGC 21 - Publication in refereed journal

SN - 1359-6462

VL - 62

SP - 617

EP - 620

JO - Scripta Materialia

JF - Scripta Materialia

IS - 8

ER -

Evidence of two-length-scale kinetics of R-phase transformation by high-energy X-ray diffraction

Abstract

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Research Keywords

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