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Review Articles

Deformation and Fracture of Functional Ferromagnetics

[+] Author and Article Information
Daining Fang

Department of Engineering Mechanics, Tsinghua University, Beijing 100084, P.R.C.fangdn@mail.tsinghua.edu.cn

Yongping Wan

School of Aerospace Engineering and Applied Mechanics, Tongji University, Shanghai 200092, P.R.C.; Department of Engineering Mechanics, Tsinghua University, Beijing 100084, P.R.C.

Xue Feng

Department of Engineering Mechanics, Tsinghua University, Beijing 100084, P.R.C.

Ai Kah Soh

Department of Mechanical Engineering, University of Hong Kong, Hong Kong, P.R.C.

Appl. Mech. Rev 61(2), 020803 (Mar 21, 2008) (23 pages) doi:10.1115/1.2888519 History: Published March 21, 2008

This article presents an overview of recent progress on magnetomechanical deformation and fracture of functional ferromagnetic materials. Following a brief introduction of the classical magnetoelasticity and the magnetomechanical behavior of traditional ferromagnetics, recent development on the deformation and fracture of soft ferromagnetic materials and the mechanics of ferromagnetic composites is critically reviewed. Also included are the authors’ own works both on experimental testing and theoretical modeling of soft ferromagnetics, ferromagnetic composites, and shape memory ferromagnetic alloys. This review article cited 162 references.

Copyright © 2008 by American Society of Mechanical Engineers
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References

Figures

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Figure 1

Schematic setup of magnetostriction testing with optical fiber (44)

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Figure 2

Schematic setup of magnetostriction testing with Bitter coils (13)

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Figure 3

Schematic setup of magnetostriction testing with weight loads (45)

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Figure 4

Magnetostriction measurement setup with a closed magnetic circuit (46)

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Figure 5

Sectional view of a cylindrical sample holder for rods of highly magnetostrictive materials (47)

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Figure 6

Schematic of the experimental setup for magnetostrictive materials with a water-cooled electromagnet (48)

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Figure 7

(a) Schematic and (b) photo of experimental setup for coupled magnetomechanical loads (50-51)

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Figure 8

Magnetostriction of Ni6 subjected to (a) tensile stress and (b) compressive stress (51)

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Figure 9

Effect of stress cycling on magnetization (64)

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Figure 10

Effect of prestress on magnetostriction (50)

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Figure 11

Variation of magnetization with prestresses (50)

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Figure 12

Stress plotted as a function of strain without magnetic field (67)

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Figure 13

Stress versus magnetization curve without magnetic field (67)

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Figure 14

Strain versus stress curve in the presence of magnetic field (51)

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Figure 15

Effect of magnetic field stress versus magnetization curve (51)

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Figure 16

Magnetostriction of single-crystal Ni52Mn16Fe8Ga24(69)

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Figure 17

Magnetostriction of single-crystal Ni52Mn16Fe8Ga24(69)

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Figure 18

Fracture resistance curve of Incoloy908 under various magnetic fields (49)

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Figure 19

Fracture toughness of Incoloy908 under various magnetic fields (49)

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Figure 20

Effect of relative permeability and magnetic field on fracture toughness of manganese-zinc ferrite ceramic (73)

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Figure 21

SIF versus magnetic field (74)

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Figure 22

Comparison of the measured magnetic-moment intensity factor with the theoretical result (single-internal crack) (75)

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Figure 23

Moment intensity factor versus magnetic field (single-edge crack) (75)

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Figure 24

Moment intensity factor versus magnetic field (two symmetric-edge cracks) (75)

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Figure 25

CGR versus magnetic field (76)

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Figure 26

Experimental curves of magnetic field (H) dependence of piezomagnetic coefficient (d)(84)

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Figure 27

Schematic of compressive stress dependence of H̃(84)

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Figure 28

Magnetostriction loop of Ni6 without prestress (51)

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Figure 29

Initial yield surface of polycrystalline Terfenol-D (51)

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Figure 30

Stress versus strain curve for Terfenol-D (51)

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Figure 31

An infinite plane with a center-through crack (131)

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Figure 32

The variation of SIF with the magnetic field (131)

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Figure 33

The magnetization curve of the perfect saturation model (133)

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Figure 34

The size and position of the magnetization saturation zone (133)

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Figure 35

Schematic of a double-inclusion model (142)

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Figure 36

Effective modulus plotted against volume fraction (142)

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Figure 37

Equivalent magnetostriction plotted against volume fraction (142)

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Figure 38

Composite magnetostriction plotted against elastic modulus ratio rG(157)

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Figure 39

Effective magnetostriction λ* plotted against volume fraction f(157)

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