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Development of texture and grain size during extrusion of ZA63 alloy containing stable quasicrystalline i-phase and its effect on tensile and compression strength
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SYSNO ASEP 0540755 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Development of texture and grain size during extrusion of ZA63 alloy containing stable quasicrystalline i-phase and its effect on tensile and compression strength Author(s) Tesař, Karel (FZU-D) ORCID
Somekawa, H. (JP)
Singh, A. (JP)Number of authors 3 Article number 156340 Source Title Journal of Alloys and Compounds. - : Elsevier - ISSN 0925-8388
Roč. 849, Dec (2020), s. 1-11Number of pages 11 s. Language eng - English Country NL - Netherlands Keywords metals and alloys ; microstructure ; quasicrystals ; scanning electron microscopy (SEM) ; mechanical properties Subject RIV BM - Solid Matter Physics ; Magnetism OECD category Condensed matter physics (including formerly solid state physics, supercond.) Method of publishing Limited access Institutional support FZU-D - RVO:68378271 UT WOS 000573233800002 EID SCOPUS 85089567020 DOI 10.1016/j.jallcom.2020.156340 Annotation We have focused on dispersion of quasicrystalline i-phase in a Rare Earth-free magnesium alloy Mg6Zn3Al (ZA63). The cast alloy was subjected to a two-step direct extrusion process to study phase (particle) distribution, grain structure, microtexture and related parameters using a host of techniques associated with scanning electron microscopy (SEM) and transmission electron microscopy (TEM), and the resulting mechanical properties. The first extrusion (at 563 K) with a small extrusion ratio of 6.25:1 produced a dispersion of φ phase along the extrusion direction and i-phase decorating the boundaries of grains of size of about 30 μm with a mild basal texture. The second extrusion (at 483 K) with an extrusion ratio of 25:1 reduced the average grain size to 2μm, with comparable yield strength 287.0±4.1 MPa in tension and 299.0 MPa in compression (elongations ~21%). Workplace Institute of Physics Contact Kristina Potocká, potocka@fzu.cz, Tel.: 220 318 579 Year of Publishing 2021 Electronic address https://doi.org/10.1016/j.jallcom.2020.156340
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