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Bimodal microstructure in an AlZrTi alloy prepared by mechanical milling and spark plasma sintering
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SYSNO ASEP 0533709 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Bimodal microstructure in an AlZrTi alloy prepared by mechanical milling and spark plasma sintering Author(s) Molnárová, Orsolya (FZU-D) ORCID
Duchoň, Jan (FZU-D) ORCID, RID
de Prado, Esther (FZU-D) ORCID
Csáki, Štefan (UFP-V) ORCID
Průša, F. (CZ)
Málek, P. (CZ)Number of authors 6 Article number 3756 Source Title Materials. - : MDPI
Roč. 13, č. 17 (2020), s. 1-13Number of pages 13 s. Language eng - English Country CH - Switzerland Keywords gas atomization ; mechanical milling ; spark plasma sintering ; microstructure ; microhardness Subject RIV JG - Metallurgy OECD category Materials engineering Subject RIV - cooperation Institute of Plasma Physics - Plasma and Gas Discharge Physics R&D Projects EF16_019/0000760 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) LM2018110 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) Method of publishing Open access Institutional support FZU-D - RVO:68378271 ; UFP-V - RVO:61389021 UT WOS 000569666400001 EID SCOPUS 85090501238 DOI 10.3390/ma13173756 Annotation The aim of this study was to prepare a low porosity bulk sample with a fine-grained structure from an AlZrTi alloy. Nanostructured powder particles were prepared by mechanical milling of gas atomized powder. The mechanically milled powder was consolidated using spark plasma sintering technology at 475 °C for 6 min using a pressure of 100 MPa. Sintering led to a low porosity sintered sample with a bimodal microstructure. The sintered sample was revealed to be composed of non-recrystallized grains with an approximate size of about 100 nm encompassed by distinct clusters of coarser, micrometer-sized grains. Whereas the larger grains were found to be lean on second phase particles, a high density of second phase particles was found in the areas of fine grains. The microhardness of the milled powder particles was established to be 163 ± 15 HV0.01, which decreased to a slightly lower value of 137 ± 25 HV0.01 after sintering. Workplace Institute of Physics Contact Kristina Potocká, potocka@fzu.cz, Tel.: 220 318 579 Year of Publishing 2021 Electronic address http://hdl.handle.net/11104/0312015
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