Crack growth resistance behavior of lanthanum doped bismuth ferrite-lead titanate: Effect of tetragonality and mixed phase crystal structures

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Details zur Publikation

Autorinnen und Autoren: Leist T, Broetz J, Seo YH, Cheng S, Webber K
Zeitschrift: Engineering Fracture Mechanics
Verlag: Elsevier
Jahr der Veröffentlichung: 2012
Band: 96
Seitenbereich: 267-275
ISSN: 0013-7944


Abstract


The room temperature crack growth resistance behavior of polycrystalline lanthanum-doped bismuth ferrite-lead titanate was characterized with disc compact-tension specimens. Through lanthanum doping the tetragonality can be adjusted from 1.01 to 1.10, while retaining a mixed phase system. Experimental measurements show changes in toughening behavior with increasing c/a ratio. Fracture results are discussed in conjunction with macroscopic ferroelastic constitutive behavior and stress-dependent neutron diffraction measurements to elucidate the role of a mixed phase system with heterogeneous mechanical properties. Additional X-ray diffraction measurements were performed to determine the effect of possible crack-tip stress-induced phase transformations on R-curve behavior. (C) 2012 Elsevier Ltd. All rights reserved.



FAU-Autorinnen und Autoren / FAU-Herausgeberinnen und Herausgeber

Webber, Kyle Prof.
Professur für Werkstoffwissenschaften (Funktionskeramik)


Einrichtungen weiterer Autorinnen und Autoren

Technische Universität Darmstadt


Zitierweisen

APA:
Leist, T., Broetz, J., Seo, Y.-H., Cheng, S., & Webber, K. (2012). Crack growth resistance behavior of lanthanum doped bismuth ferrite-lead titanate: Effect of tetragonality and mixed phase crystal structures. Engineering Fracture Mechanics, 96, 267-275. https://dx.doi.org/10.1016/j.engfracmech.2012.08.008

MLA:
Leist, Thorsten, et al. "Crack growth resistance behavior of lanthanum doped bismuth ferrite-lead titanate: Effect of tetragonality and mixed phase crystal structures." Engineering Fracture Mechanics 96 (2012): 267-275.

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