Grain size effect on the martensitic transformation of Ni50Mn25Ga17Cu8 high-temperature shape memory alloy

Jingmin Wang; Yongjun Han; Hui Hua; Xiao Wang; Chengbao Jiang

doi:10.1016/j.intermet.2015.02.016

Grain size effect on the martensitic transformation of Ni₅₀Mn₂₅Ga₁₇Cu₈ high-temperature shape memory alloy

Jingmin Wang^*
, Yongjun Han
, Hui Hua
, Xiao Wang
, Chengbao Jiang

^*Corresponding author for this work

School of Materials Science and Engineering

Beihang University

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

13 Scopus citations

Abstract

Single crystal, coarse-grained and fine-grained polycrystals of Ni₅₀Mn₂₅Ga₁₇Cu₈ high-temperature shape memory alloy were prepared. Grain size effect on the martensitic transformation was investigated. Compared with the single crystal, the martensitic transformation temperatures were slightly decreased by coarse grains, but were greatly decreased by fine grains. Strong grain size dependence of the kinetics of the martensitic transformation was monitored. The average activation energy of the transformation required for the fine-grained polycrystal was nearly four times of that for the single crystal.

Original language	English
Pages (from-to)	42-46
Number of pages	5
Journal	Intermetallics
Volume	61
DOIs	https://doi.org/10.1016/j.intermet.2015.02.016
State	Published - Jun 2015

Keywords

A. Shape-memory alloys
B. Martensitic transformation

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title = "Grain size effect on the martensitic transformation of Ni50Mn25Ga17Cu8 high-temperature shape memory alloy",

abstract = "Single crystal, coarse-grained and fine-grained polycrystals of Ni50Mn25Ga17Cu8 high-temperature shape memory alloy were prepared. Grain size effect on the martensitic transformation was investigated. Compared with the single crystal, the martensitic transformation temperatures were slightly decreased by coarse grains, but were greatly decreased by fine grains. Strong grain size dependence of the kinetics of the martensitic transformation was monitored. The average activation energy of the transformation required for the fine-grained polycrystal was nearly four times of that for the single crystal.",

keywords = "A. Shape-memory alloys, B. Martensitic transformation",

author = "Jingmin Wang and Yongjun Han and Hui Hua and Xiao Wang and Chengbao Jiang",

year = "2015",

month = jun,

doi = "10.1016/j.intermet.2015.02.016",

language = "英语",

volume = "61",

pages = "42--46",

journal = "Intermetallics",

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T1 - Grain size effect on the martensitic transformation of Ni50Mn25Ga17Cu8 high-temperature shape memory alloy

AU - Wang, Jingmin

AU - Han, Yongjun

AU - Hua, Hui

AU - Wang, Xiao

AU - Jiang, Chengbao

PY - 2015/6

Y1 - 2015/6

N2 - Single crystal, coarse-grained and fine-grained polycrystals of Ni50Mn25Ga17Cu8 high-temperature shape memory alloy were prepared. Grain size effect on the martensitic transformation was investigated. Compared with the single crystal, the martensitic transformation temperatures were slightly decreased by coarse grains, but were greatly decreased by fine grains. Strong grain size dependence of the kinetics of the martensitic transformation was monitored. The average activation energy of the transformation required for the fine-grained polycrystal was nearly four times of that for the single crystal.

AB - Single crystal, coarse-grained and fine-grained polycrystals of Ni50Mn25Ga17Cu8 high-temperature shape memory alloy were prepared. Grain size effect on the martensitic transformation was investigated. Compared with the single crystal, the martensitic transformation temperatures were slightly decreased by coarse grains, but were greatly decreased by fine grains. Strong grain size dependence of the kinetics of the martensitic transformation was monitored. The average activation energy of the transformation required for the fine-grained polycrystal was nearly four times of that for the single crystal.

KW - A. Shape-memory alloys

KW - B. Martensitic transformation

UR - https://www.scopus.com/pages/publications/84924758007

U2 - 10.1016/j.intermet.2015.02.016

DO - 10.1016/j.intermet.2015.02.016

M3 - 文章

AN - SCOPUS:84924758007

SN - 0966-9795

VL - 61

SP - 42

EP - 46

JO - Intermetallics

JF - Intermetallics

ER -

Grain size effect on the martensitic transformation of Ni₅₀Mn₂₅Ga₁₇Cu₈ high-temperature shape memory alloy

Abstract

Keywords

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