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Flat cavities formed in TZP caused by superplastic deformations at high strain-rates and their effect on elongation
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SYSNO ASEP 0105613 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Ostatní články Title Flat cavities formed in TZP caused by superplastic deformations at high strain-rates and their effect on elongation Title Formování plochých kavit v TZP při vysokých rychlostech superplastické deformace a jejich vliv na celkové protažení Author(s) Harjo, S. (JP)
Šaroun, Jan (UJF-V) RID, ORCID, SAI
Motohashi, Y. (JP)
Kojima, N. (JP)
Ryukhtin, Vasyl (UJF-V) RID, ORCID, SAI
Strunz, Pavel (UJF-V) RID, ORCID, SAI
Baron, M. (FR)
Loidl, R. (FR)Source Title Materials Transactions. - : Japan Institute of Metals and Materials - ISSN 1345-9678
Roč. 45, č. 45 (2004), s. 824-832Number of pages 9 s. Language eng - English Country JP - Japan Keywords angle neutron-scattering Subject RIV BM - Solid Matter Physics ; Magnetism CEZ AV0Z1048901 - UJF-V Annotation Cavitation in a superplastic 3Y-TZP pulled under different temperature and strain-rate conditions was analyzed by means of SANS techniques. In high strain-rate deformations, the formation of crack-like flat cavities with their flat surfaces lying roughly normal to the tensile axis was found, in addition to conventional cavities slightly elongated along the tensile direction having been frequently observed in superplastically deformed 3Y-TZP. Coalescence of the nearby crack-like flat cavities during the high strain-rate deformations gave rise to the generation of large brittle-like cracks, which led to an earlier fracture without apparent occurrence of necking. A mechanism for the formation of the flat cavities and their effect on the elongation are discussed. Workplace Nuclear Physics Institute Contact Markéta Sommerová, sommerova@ujf.cas.cz, Tel.: 266 173 228 Year of Publishing 2005
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