Size effects and shape memory properties in ZrO2 ceramic micro- and nano-pillars

Zehui Du; Xiao Mei Zeng; Qing Liu; Alan Lai; Shahrouz Amini; Ali Miserez; Christopher A. Schuh; Chee Lip Gan

doi:10.1016/j.scriptamat.2015.01.013

Size effects and shape memory properties in ZrO₂ ceramic micro- and nano-pillars

Zehui Du, Xiao Mei Zeng, Qing Liu, Alan Lai, Shahrouz Amini, Ali Miserez, Christopher A. Schuh^*, Chee Lip Gan

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

74 Citations (Scopus)

Abstract

Bulk zirconia ceramics tend to crack when they undergo martensitic transformation, while small-scale samples survive. The relative importance of sample dimension and mean grain size of such ceramics, with reference to the elimination of mismatched transformation strains and therefore cracking, was studied by creating pillars with diameters straddling the mean grain size. The pillars can be transformed through ∼3-8% strain without cracking when their diameter is near or below the bulk grain size, and can be fully recovered.

Original language	English
Pages (from-to)	40-43
Number of pages	4
Journal	Scripta Materialia
Volume	101
DOIs	https://doi.org/10.1016/j.scriptamat.2015.01.013
Publication status	Published - May 1 2015
Externally published	Yes

Bibliographical note

Publisher Copyright:
© 2015 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

ASJC Scopus Subject Areas

General Materials Science
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering
Metals and Alloys

Keywords

Ceramic pillar
Martensitic transformation
Shape memory
Size effect
ZrO

Access to Document

10.1016/j.scriptamat.2015.01.013

Cite this

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title = "Size effects and shape memory properties in ZrO2 ceramic micro- and nano-pillars",

abstract = "Bulk zirconia ceramics tend to crack when they undergo martensitic transformation, while small-scale samples survive. The relative importance of sample dimension and mean grain size of such ceramics, with reference to the elimination of mismatched transformation strains and therefore cracking, was studied by creating pillars with diameters straddling the mean grain size. The pillars can be transformed through ∼3-8\% strain without cracking when their diameter is near or below the bulk grain size, and can be fully recovered.",

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AU - Du, Zehui

AU - Zeng, Xiao Mei

AU - Liu, Qing

AU - Lai, Alan

AU - Amini, Shahrouz

AU - Miserez, Ali

AU - Schuh, Christopher A.

AU - Gan, Chee Lip

PY - 2015/5/1

Y1 - 2015/5/1

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AB - Bulk zirconia ceramics tend to crack when they undergo martensitic transformation, while small-scale samples survive. The relative importance of sample dimension and mean grain size of such ceramics, with reference to the elimination of mismatched transformation strains and therefore cracking, was studied by creating pillars with diameters straddling the mean grain size. The pillars can be transformed through ∼3-8% strain without cracking when their diameter is near or below the bulk grain size, and can be fully recovered.

KW - Ceramic pillar

KW - Martensitic transformation

KW - Shape memory

KW - Size effect

KW - ZrO

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