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

Voegler M, Daniels JE, Webber KG, Roedel J (2017)

Publication Language: English

Publication Status: Published

Publication Type: Journal article

Publication year: 2017

Journal

Scripta Materialia Elsevier

Publisher: PERGAMON-ELSEVIER SCIENCE LTD

Book Volume: 136

Pages Range: 115-119

DOI: 10.1016/j.scriptamat.2017.04.023

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.

Authors with CRIS profile

Kyle Grant Webber Professur für Werkstoffwissenschaften (Funktionskeramik)

Involved external institutions

Technische Universität Darmstadt DE Germany (DE) University of New South Wales (UNSW) AU Australia (AU)

How to cite

APA:

Voegler, M., Daniels, J.E., Webber, K.G., & 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://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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