Počet záznamů: 1

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

SYSNO ASEP	0346945
Druh ASEP	J - Článek v odborném periodiku
Zařazení RIV	J - Článek v odborném periodiku
Poddruh J	Článek ve WOS
Název	Influence of Flat Cavity Formation on Stress vs. Strain and Strain-Rate Relations of Superplastic Deformation in 3Y-TZP
Tvůrce(i)	Motohashi, Y. (JP) Ryukhtin, Vasil (UJF-V)_{RID, ORCID, SAI} Sakuma, T. (JP) Šaroun, Jan (UJF-V)_{RID, ORCID, SAI}
Zdroj.dok.	Materials Transactions. - : Japan Institute of Metals and Materials - ISSN 1345-9678 Roč. 51, č. 3 (2010), s. 567-573
Poč.str.	7 s.
Jazyk dok.	eng - angličtina
Země vyd.	JP - Japonsko
Klíč. slova	superplasticity ; tetragonal zirconia polycrystals ; flow stress
Vědní obor RIV	BG - Jaderná, atomová a mol. fyzika, urychlovače
CEZ	AV0Z10480505 - UJF-V (2005-2011)
UT WOS	000276967200025
DOI	10.2320/matertrans.M2009381
Anotace	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 axis are 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 a small 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.
Pracoviště	Ústav jaderné fyziky
Kontakt	Markéta Sommerová, sommerova@ujf.cas.cz, Tel.: 266 173 228
Rok sběru	2011

Počet záznamů: 1