Stress induced and magnetic field enhanced twin variants reorientation in NiMnGa single crystal

Jinqmin Wang; Chengbao Jiang; Huibin Xu

doi:10.4028/0-87849-960-1.2013

Stress induced and magnetic field enhanced twin variants reorientation in NiMnGa single crystal

Jinqmin Wang^*
, Chengbao Jiang
, Huibin Xu

^*Corresponding author for this work

School of Materials Science and Engineering

Beihang University

Research output: Contribution to journal › Conference article › peer-review

7 Scopus citations

Abstract

The behavior of twin variants reorientation in Ni₅₀Mn _27.5Ga_22.5 single crystal under the applied mechanical stress and magnetic field was investigated. Through three times of compression, the twinning stress was reduced from 4.4MPa to 0.4MPa, and 2.5% stress induced strain was obtained. During the succedent MFIS measurement, with the increase of measurement number of times, the critical field (μ ₀H) _c at which the MFIS jumps became lower, and the corresponding jumping magnetostrain ε_j, and the maximal magnetostrain ε_max ascended. At last, a quasi single-variant state was realized, and the sample showed repeatable 6.21% MFIS, which is close to the theoretical value (1-c/a)*100%. The results are discussed from the point of martensitic microstructure evolution.

Original language	English
Pages (from-to)	2013-2016
Number of pages	4
Journal	Materials Science Forum
Volume	475-479
Issue number	III
DOIs	https://doi.org/10.4028/0-87849-960-1.2013
State	Published - 2005
Event	PRICM 5: The Fifth Pacific Rim International Conference on Advanced Materials and Processing - Beijing, China Duration: 2 Nov 2004 → 5 Nov 2004

Keywords

Compression
Magnetic field induced strain (MFIS)
NiMnGa
Twinning stress
Variants reorientation

Access to Document

10.4028/0-87849-960-1.2013

Cite this

@article{244b9115d2494ff1a4ae7392d688a470,

title = "Stress induced and magnetic field enhanced twin variants reorientation in NiMnGa single crystal",

abstract = "The behavior of twin variants reorientation in Ni50Mn 27.5Ga22.5 single crystal under the applied mechanical stress and magnetic field was investigated. Through three times of compression, the twinning stress was reduced from 4.4MPa to 0.4MPa, and 2.5\% stress induced strain was obtained. During the succedent MFIS measurement, with the increase of measurement number of times, the critical field (μ 0H) c at which the MFIS jumps became lower, and the corresponding jumping magnetostrain εj, and the maximal magnetostrain εmax ascended. At last, a quasi single-variant state was realized, and the sample showed repeatable 6.21\% MFIS, which is close to the theoretical value (1-c/a)*100\%. The results are discussed from the point of martensitic microstructure evolution.",

keywords = "Compression, Magnetic field induced strain (MFIS), NiMnGa, Twinning stress, Variants reorientation",

author = "Jinqmin Wang and Chengbao Jiang and Huibin Xu",

year = "2005",

doi = "10.4028/0-87849-960-1.2013",

language = "英语",

volume = "475-479",

pages = "2013--2016",

journal = "Materials Science Forum",

issn = "0255-5476",

publisher = "Trans Tech Publications Ltd",

number = "III",

note = "PRICM 5: The Fifth Pacific Rim International Conference on Advanced Materials and Processing ; Conference date: 02-11-2004 Through 05-11-2004",

}

TY - JOUR

T1 - Stress induced and magnetic field enhanced twin variants reorientation in NiMnGa single crystal

AU - Wang, Jinqmin

AU - Jiang, Chengbao

AU - Xu, Huibin

PY - 2005

Y1 - 2005

N2 - The behavior of twin variants reorientation in Ni50Mn 27.5Ga22.5 single crystal under the applied mechanical stress and magnetic field was investigated. Through three times of compression, the twinning stress was reduced from 4.4MPa to 0.4MPa, and 2.5% stress induced strain was obtained. During the succedent MFIS measurement, with the increase of measurement number of times, the critical field (μ 0H) c at which the MFIS jumps became lower, and the corresponding jumping magnetostrain εj, and the maximal magnetostrain εmax ascended. At last, a quasi single-variant state was realized, and the sample showed repeatable 6.21% MFIS, which is close to the theoretical value (1-c/a)*100%. The results are discussed from the point of martensitic microstructure evolution.

AB - The behavior of twin variants reorientation in Ni50Mn 27.5Ga22.5 single crystal under the applied mechanical stress and magnetic field was investigated. Through three times of compression, the twinning stress was reduced from 4.4MPa to 0.4MPa, and 2.5% stress induced strain was obtained. During the succedent MFIS measurement, with the increase of measurement number of times, the critical field (μ 0H) c at which the MFIS jumps became lower, and the corresponding jumping magnetostrain εj, and the maximal magnetostrain εmax ascended. At last, a quasi single-variant state was realized, and the sample showed repeatable 6.21% MFIS, which is close to the theoretical value (1-c/a)*100%. The results are discussed from the point of martensitic microstructure evolution.

KW - Compression

KW - Magnetic field induced strain (MFIS)

KW - NiMnGa

KW - Twinning stress

KW - Variants reorientation

UR - https://www.scopus.com/pages/publications/17144378261

U2 - 10.4028/0-87849-960-1.2013

DO - 10.4028/0-87849-960-1.2013

M3 - 会议文章

AN - SCOPUS:17144378261

SN - 0255-5476

VL - 475-479

SP - 2013

EP - 2016

JO - Materials Science Forum

JF - Materials Science Forum

IS - III

T2 - PRICM 5: The Fifth Pacific Rim International Conference on Advanced Materials and Processing

Y2 - 2 November 2004 through 5 November 2004

ER -

Stress induced and magnetic field enhanced twin variants reorientation in NiMnGa single crystal

Abstract

Keywords

Access to Document

Other files and links

Fingerprint

Cite this