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

^*此作品的通讯作者

材料学院

Beijing Institute of Technology
Argonne National Laboratory
University of Tennessee, Knoxville
Northeastern University China

科研成果: 期刊稿件 › 文章 › 同行评审

2 引用（Scopus）

摘要

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.

源语言	英语
页（从-至）	617-620
页数	4
期刊	Scripta Materialia
卷	62
期	8
DOI	https://doi.org/10.1016/j.scriptamat.2010.01.011
出版状态	已出版 - 4月 2010

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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.",

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.\}",

year = "2010",

month = apr,

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

language = "English",

volume = "62",

pages = "617--620",

journal = "Scripta Materialia",

issn = "1359-6462",

publisher = "Acta Materialia Inc",

number = "8",

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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.

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.

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.

KW - Martensitic phase transformation

KW - Phase transformation kinetics

KW - R-phase

KW - Shape memory alloy

KW - X-ray diffraction (XRD)

UR - https://www.scopus.com/pages/publications/76549123862

U2 - 10.1016/j.scriptamat.2010.01.011

DO - 10.1016/j.scriptamat.2010.01.011

M3 - Article

AN - SCOPUS:76549123862

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

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