Influence of Flat Cavity Formation on Stress vs. Strain and Strain-Rate Relations of Superplastic Deformation in 3Y-TZP

Result code in IS VaVaI

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Result on the web

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DOI - Digital Object Identifier

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Result language

angličtina

Original language name

Influence of Flat Cavity Formation on Stress vs. Strain and Strain-Rate Relations of Superplastic Deformation in 3Y-TZP

Original language description

During superplastic deformation (SPD) of tetragonal zirconia polycrystals containing 3 mol% yttria (3Y-TZP) at high strain-rates, a number of crack-like flat cavities having very narrow gaps lying along grain boundaries mostly normal to the tensile axisare produced in addition to conventional cavities. In order to see when (from which strain point) the flat cavities get started to form, the tensile deformation of the 3Y-TZP was interrupted at different strain points including a yield point, and then asmall angle neutron scattering (SANS) technique was applied to examine the existence of the flat cavities. It was found that no flat cavities were produced at the yield point but they got started to form soon after the yielding, i.e., after a superplastic flow began. The formation of the flat cavities can decrease the cross-sectional area of the specimen, resulting in a decrease in the flow stress apparently.

Czech name

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Czech description

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Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

BG - Nuclear, atomic and molecular physics, accelerators

OECD FORD branch

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Project

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Continuities

Z - Vyzkumny zamer (s odkazem do CEZ)

Publication year

2010

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Materials Transactions

ISSN

1345-9678

e-ISSN

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Volume of the periodical

51

Issue of the periodical within the volume

3

Country of publishing house

JP - JAPAN

Number of pages

7

Pages from-to

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UT code for WoS article

000276967200025

EID of the result in the Scopus database

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