Crack tip process zone domain switching in a soft lead zirconate titanate ceramic

Jacob L. Jones; S. Maziar Motahari; Mesut Varlioglu; Ulrich Lienert; Joel V. Bernier; Mark Hoffman; Ersan Üstündag

doi:10.1016/j.actamat.2007.06.012

Crack tip process zone domain switching in a soft lead zirconate titanate ceramic

Jacob L. Jones^*, S. Maziar Motahari, Mesut Varlioglu, Ulrich Lienert, Joel V. Bernier, Mark Hoffman, Ersan Üstündag

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Araştırma sonucu: Dergiye katkı › Makale › bilirkişi

58 Atıf (Scopus)

Özet

Non-180° domain switching leads to fracture toughness enhancement in ferroelastic materials. Using a high-energy synchrotron X-ray source and a two-dimensional detector in transmission geometry, non-180° domain switching and crystallographic lattice strains were measured in situ around a crack tip in a soft tetragonal lead zirconate titanate ceramic. At K_I = 0.71 MPa m^1/2 and below the initiation toughness, the process zone size, spatial distribution of preferred domain orientations, and lattice strains near the crack tip are a strong function of direction within the plane of the compact tension specimen. Deviatoric stresses and strains calculated using a finite element model and projected to the same directions measured in diffraction correlate with the measured spatial distributions and directional dependencies. Some preferred orientations remain in the crack wake after the crack has propagated; within the crack wake, the tetragonal 0 0 1 axis has a preferred orientation both perpendicular to the crack face and toward the crack front.

Orijinal dil	İngilizce
Sayfa (başlangıç-bitiş)	5538-5548
Sayfa sayısı	11
Dergi	Acta Materialia
Hacim	55
Basın numarası	16
DOI'lar	https://doi.org/10.1016/j.actamat.2007.06.012
Yayın durumu	Yayınlandı - Eyl 2007
Harici olarak yayınlandı	Evet

Finansman

This research was supported by the US National Science Foundation, award number OISE-0402066, the University of Florida, and the US Department of Energy via the Ames Laboratory. Use of the Advanced Photon Source was supported by the US Department of Energy, Office of Science, Office of Basic Energy Sciences, under Contract No. DE-AC02-06CH11357. The authors also acknowledge the technical assistance and helpful suggestions of G. Tutuncu (ISU), S.Y. Lee (ISU), and J. Almer (APS).

Finansörler	Finansör numarası
Office of Basic Energy Sciences
US Department of Energy
US National Science Foundation	OISE-0402066
Office of Science
University of Florida
Ames Laboratory

Belgeye Erişim

10.1016/j.actamat.2007.06.012

Diğer Dosyalar ve Linkler

Link to publication in Scopus

Alıntı Yap

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title = "Crack tip process zone domain switching in a soft lead zirconate titanate ceramic",

abstract = "Non-180° domain switching leads to fracture toughness enhancement in ferroelastic materials. Using a high-energy synchrotron X-ray source and a two-dimensional detector in transmission geometry, non-180° domain switching and crystallographic lattice strains were measured in situ around a crack tip in a soft tetragonal lead zirconate titanate ceramic. At KI = 0.71 MPa m1/2 and below the initiation toughness, the process zone size, spatial distribution of preferred domain orientations, and lattice strains near the crack tip are a strong function of direction within the plane of the compact tension specimen. Deviatoric stresses and strains calculated using a finite element model and projected to the same directions measured in diffraction correlate with the measured spatial distributions and directional dependencies. Some preferred orientations remain in the crack wake after the crack has propagated; within the crack wake, the tetragonal 0 0 1 axis has a preferred orientation both perpendicular to the crack face and toward the crack front.",

keywords = "Ceramics, Ferroelectricity, Fracture, Toughness, X-ray diffraction (XRD)",

author = "Jones, {Jacob L.} and Motahari, {S. Maziar} and Mesut Varlioglu and Ulrich Lienert and Bernier, {Joel V.} and Mark Hoffman and Ersan {\"U}st{\"u}ndag",

year = "2007",

month = sep,

doi = "10.1016/j.actamat.2007.06.012",

language = "English",

volume = "55",

pages = "5538--5548",

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TY - JOUR

T1 - Crack tip process zone domain switching in a soft lead zirconate titanate ceramic

AU - Jones, Jacob L.

AU - Motahari, S. Maziar

AU - Varlioglu, Mesut

AU - Lienert, Ulrich

AU - Bernier, Joel V.

AU - Hoffman, Mark

AU - Üstündag, Ersan

PY - 2007/9

Y1 - 2007/9

N2 - Non-180° domain switching leads to fracture toughness enhancement in ferroelastic materials. Using a high-energy synchrotron X-ray source and a two-dimensional detector in transmission geometry, non-180° domain switching and crystallographic lattice strains were measured in situ around a crack tip in a soft tetragonal lead zirconate titanate ceramic. At KI = 0.71 MPa m1/2 and below the initiation toughness, the process zone size, spatial distribution of preferred domain orientations, and lattice strains near the crack tip are a strong function of direction within the plane of the compact tension specimen. Deviatoric stresses and strains calculated using a finite element model and projected to the same directions measured in diffraction correlate with the measured spatial distributions and directional dependencies. Some preferred orientations remain in the crack wake after the crack has propagated; within the crack wake, the tetragonal 0 0 1 axis has a preferred orientation both perpendicular to the crack face and toward the crack front.

AB - Non-180° domain switching leads to fracture toughness enhancement in ferroelastic materials. Using a high-energy synchrotron X-ray source and a two-dimensional detector in transmission geometry, non-180° domain switching and crystallographic lattice strains were measured in situ around a crack tip in a soft tetragonal lead zirconate titanate ceramic. At KI = 0.71 MPa m1/2 and below the initiation toughness, the process zone size, spatial distribution of preferred domain orientations, and lattice strains near the crack tip are a strong function of direction within the plane of the compact tension specimen. Deviatoric stresses and strains calculated using a finite element model and projected to the same directions measured in diffraction correlate with the measured spatial distributions and directional dependencies. Some preferred orientations remain in the crack wake after the crack has propagated; within the crack wake, the tetragonal 0 0 1 axis has a preferred orientation both perpendicular to the crack face and toward the crack front.

KW - Ceramics

KW - Ferroelectricity

KW - Fracture

KW - Toughness

KW - X-ray diffraction (XRD)

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U2 - 10.1016/j.actamat.2007.06.012

DO - 10.1016/j.actamat.2007.06.012

M3 - Article

AN - SCOPUS:34548116575

SN - 1359-6454

VL - 55

SP - 5538

EP - 5548

JO - Acta Materialia

JF - Acta Materialia

IS - 16

ER -

Crack tip process zone domain switching in a soft lead zirconate titanate ceramic

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