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Selective laser melting of iron: multiscale characterization of mechanical properties
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SYSNO ASEP 0541825 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Selective laser melting of iron: multiscale characterization of mechanical properties Author(s) Lejček, Pavel (FZU-D) RID, ORCID, SAI
Čapek, Jaroslav (FZU-D) ORCID
Roudnická, Michaela (FZU-D) ORCID
Molnárová, Orsolya (FZU-D) ORCID
Maňák, Jan (FZU-D) ORCID
Duchoň, Jan (FZU-D) ORCID, RID
Dvorský, Drahomír (FZU-D) ORCID
Koller, Martin (UT-L) ORCID
Seiner, Hanuš (UT-L) RID, ORCID
Svora, Petr (FZU-D) ORCID
Vojtěch, D. (CZ)Number of authors 11 Article number 140316 Source Title Materials Science and Engineering A Structural Materials Properties Microstructure and Processing. - : Elsevier - ISSN 0921-5093
Roč. 800, Jan (2021)Number of pages 10 s. Language eng - English Country CH - Switzerland Keywords dislocations ; grain boundaries ; iron ; nanoindentation ; resonant ultrasound spectroscopy ; selective laser melting ; tensile tests Subject RIV BM - Solid Matter Physics ; Magnetism OECD category Condensed matter physics (including formerly solid state physics, supercond.) Subject RIV - cooperation Institute of Thermomechanics - Solid Matter Physics ; Magnetism R&D Projects LM2015087 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) EF16_019/0000760 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) GA17-01618S GA ČR - Czech Science Foundation (CSF) Method of publishing Limited access Institutional support FZU-D - RVO:68378271 ; UT-L - RVO:61388998 UT WOS 000593929200003 EID SCOPUS 85091942449 DOI 10.1016/j.msea.2020.140316 Annotation The complex study of the mechanical properties of pure iron produced by selective laser melting (SLM) revealed enhanced values of the yield stress and ultimate tensile strength as compared to the material produced in a classic way. These values result from high dislocation density, presence of interstitial carbon and small precipitates. In situ tensile experiments revealed that the basic mechanism of plastic deformation in this material, the structure of which was described in detail previously [Mater. Charact. 154 (2019) 222], is the emission of dislocations from dislocation walls in the material. From the yield drop at the stress-strain dependence, the effective binding energy of carbon to dislocations is estimated. SLM iron also exhibits anisotropy of nanohardness showing maxima for orientations in the middle of the orientation triangle but also at {100} and {110} corners. This anisotropy suggests that the deformation is affected by the splitting of 1/2(111) dislocations on {110} planes into partials on {112} planes. Workplace Institute of Physics Contact Kristina Potocká, potocka@fzu.cz, Tel.: 220 318 579 Year of Publishing 2022 Electronic address https://doi.org/10.1016/j.msea.2020.140316
Number of the records: 1