Absence of toughening behavior in 0.94(Na1/2Bi1/2)TiO3-0.06BaTiO(3) relaxor ceramic

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Details zur Publikation

Autor(en): Voegler M, Daniels JE, Webber K, Roedel J
Zeitschrift: Scripta Materialia
Verlag: PERGAMON-ELSEVIER SCIENCE LTD
Jahr der Veröffentlichung: 2017
Band: 136
Seitenbereich: 115-119
ISSN: 1359-6462
Sprache: Englisch


Abstract


The fracture behavior of the unpoled 0.94(Na1/2Bi1/2)TiO3-0.06BaTiO(3) relaxor ferroelectric was investigated. Previous studies indicated that a metastable ferroelectric long-range order can be induced by mechanical stresses, which could lead to a crack tip process zone and increasing crack resistance during crack growth. Crack propagation in compact tension samples yielded a constant crack resistance as function of crack length. This is consistent with ex situ x-ray diffraction experiments, where a remanent induced process zone on the fracture surface could not be detected. We suggest the very high transformation stress, determined via macroscopic stress-strain measurements, is responsible for the absence of toughening. (C) 2017 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.



FAU-Autoren / FAU-Herausgeber

Webber, Kyle Prof.
Professur für Werkstoffwissenschaften (Funktionskeramik)


Autor(en) der externen Einrichtung(en)
Technische Universität Darmstadt
University of New South Wales (UNSW)


Zitierweisen

APA:
Voegler, M., Daniels, J.E., Webber, K., & Roedel, J. (2017). Absence of toughening behavior in 0.94(Na1/2Bi1/2)TiO3-0.06BaTiO(3) relaxor ceramic. Scripta Materialia, 136, 115-119. https://dx.doi.org/10.1016/j.scriptamat.2017.04.023

MLA:
Voegler, M., et al. "Absence of toughening behavior in 0.94(Na1/2Bi1/2)TiO3-0.06BaTiO(3) relaxor ceramic." Scripta Materialia 136 (2017): 115-119.

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Zuletzt aktualisiert 2018-08-08 um 04:34

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