Počet záznamů: 1
In-Situ Testing and Heterogeneity of UFG Cu at Elevated Temperatures
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SYSNO ASEP 0450289 Druh ASEP C - Konferenční příspěvek (mezinárodní konf.) Zařazení RIV D - Článek ve sborníku Název In-Situ Testing and Heterogeneity of UFG Cu at Elevated Temperatures Tvůrce(i) Petrenec, M. (CZ)
Král, Petr (UFM-A) RID, ORCID
Dvořák, Jiří (UFM-A) RID, ORCID
Svoboda, Milan (UFM-A) RID, ORCID
Sklenička, Václav (UFM-A) RID, ORCIDCelkový počet autorů 5 Zdroj.dok. COMAT 2014 - Recent Trends in Structural Materials. - Zurich : Trans Tech Publications, 2015 / Džugan J. ; Nový Z. - ISBN 978-3-03835-623-3 Rozsah stran s. 67-72 Poč.str. 6 s. Forma vydání Nosič - C Akce COMAT 2014 - International Conference COMAT on Recent Trends in Structural Materials /3./ Datum konání 19.11.2015-21.11.2015 Místo konání Plzeň Země CZ - Česká republika Typ akce WRD Jazyk dok. eng - angličtina Země vyd. CH - Švýcarsko Klíč. slova In-situ testing ; heterogeneity ; creep behaviour ; EBSD Vědní obor RIV JJ - Ostatní materiály CEP GAP108/11/2260 GA ČR - Grantová agentura ČR Institucionální podpora UFM-A - RVO:68081723 DOI 10.4028/www.scientific.net/AMR.1127 Anotace Experiments were conducted to investigate deformation-induced processes during in-situ tensile test at elevated temperature. Consequently the microstructure after creep loading was examined by 3D Electron Back Scatter Diffraction (EBSD) technique. The billets of coarse-grained copper were processed by ECAP at room temperature by route Bc by 8 ECAP passes. The constant strain-rate test in tension was performed at 473 K using testing GATAN stage Microtest 2000EW with EH 2000 heated grips which is configured for in-situ electron back scatter diffraction (EBSD) observations. Microstructure was examined by FEG-SEM TESCAN MIRA 3 XM equipped by EBSD detector HKL NordlysMax from OXFORD INSTRUMENT. The tensile test was interrupted by fast stress reductions after different deformation step and observation of microstructure changes was performed. In the present work was found that ultrafine-grained microstructure is instable and significant grain growth has already occurred during heating to the testing temperature. Static recrystallization during heating led to the formation of high fraction of special boundaries Σ3 and Σ9. The tensile deformation at 473 K led to the additional grain growth and formation of new grains. Pracoviště Ústav fyziky materiálu Kontakt Yvonna Šrámková, sramkova@ipm.cz, Tel.: 532 290 485 Rok sběru 2016
Počet záznamů: 1