Počet záznamů: 1
Precipitation of stable icosahedral quasicrystal phase in a Mg-Zn-Al alloy
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SYSNO ASEP 0556293 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Precipitation of stable icosahedral quasicrystal phase in a Mg-Zn-Al alloy Tvůrce(i) Singh, A. (JP)
Hiroto, T. (JP)
Ode, M. (JP)
Takakura, H. (JP)
Tesař, Karel (FZU-D) ORCID
Somekawa, H. (JP)
Hara, T. (JP)Celkový počet autorů 7 Číslo článku 117563 Zdroj.dok. Acta Materialia. - : Elsevier - ISSN 1359-6454
Roč. 225, Feb. (2022)Poč.str. 17 s. Jazyk dok. eng - angličtina Země vyd. GB - Velká Británie Klíč. slova magnesium alloys ; quasicrystals ; precipitation ; transmission electron microscopy ; in situ X-ray diffraction Vědní obor RIV BM - Fyzika pevných látek a magnetismus Obor OECD Condensed matter physics (including formerly solid state physics, supercond.) Způsob publikování Omezený přístup Institucionální podpora FZU-D - RVO:68378271 UT WOS 000788849300001 EID SCOPUS 85121765517 DOI 10.1016/j.actamat.2021.117563 Anotace Precipitation of a stable quasicrystalline i-phase has been discovered in a Mg-6Zn-3Al (wt%, ZA63) magnesium alloy, possibly a first involving a stable i-phase. Dissolution of i-phase solidified at grain boundaries leads to precipitation in the Mg-matrix during. Phase transformation, nucleation characteristics, morphology and interfaces with the matrix have been studied. Differential scanning calorimetry (DSC) and in-situ X-ray diffraction (XRD) showed dissolution and precipitation of i-phase during heating and cooling cycles, forming a hysteresis between about 250 and 325 C. The quasilattice parameter of i-phase was calculated to be 5.17 Å at room temperature, close to the c-parameter 5.18 Å of the Mg-matrix. At dissolution/nucleation, the diffraction peaks of i-phase were sharper, (quasi)lattice constants become equal to each other (5.22 Å) and the lattice strain in the matrix was minimized. The precipitates were faceted sharply on fivefold, twofold and threefold planes. Pracoviště Fyzikální ústav Kontakt Kristina Potocká, potocka@fzu.cz, Tel.: 220 318 579 Rok sběru 2023 Elektronická adresa https://doi.org/10.1016/j.actamat.2021.117563
Počet záznamů: 1