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Twinning in CoCrFeNiMn high entropy alloy induced by nanoindentation
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SYSNO ASEP 0533791 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Twinning in CoCrFeNiMn high entropy alloy induced by nanoindentation Author(s) Šiška, Filip (UFM-A) RID, ORCID
Čech, J. (CZ)
Hausild, P. (CZ)
Hadraba, Hynek (UFM-A) RID, ORCID
Chlup, Zdeněk (UFM-A) RID, ORCID
Husák, Roman (UFM-A)
Stratil, Luděk (UFM-A) ORCIDNumber of authors 7 Article number 139297 Source Title Materials Science and Engineering A Structural Materials Properties Microstructure and Processing. - : Elsevier - ISSN 0921-5093
Roč. 784, MAY (2020)Number of pages 8 s. Language eng - English Country CH - Switzerland Keywords HEA ; Nanoindentation ; Twinning ; FEM Subject RIV JG - Metallurgy OECD category Materials engineering R&D Projects GA17-23964S GA ČR - Czech Science Foundation (CSF) Method of publishing Limited access Institutional support UFM-A - RVO:68081723 UT WOS 000531017900007 EID SCOPUS 85082870968 DOI 10.1016/j.msea.2020.139297 Annotation The nanoindentation tests of CoCrFeNiMn high entropy alloy prepared by mechanical alloying route have been performed. Pop-ins on loading curves have been characterized by their indentation load, depth and length. Locations of indents within the grains, grain sizes and their orientation were obtained by the Scanning Electron Microscope/Electron Back Scattered Diffraction analysis. The stress state under the indenter was analyzed by Finite Element Method simulations using von Mises plasticity. The analysis has shown that pop-in events can be attributed to twin initiation as the pop-in length can be correlated with the twin thickness. The estimated critical twin shear stress corresponds to the one measured by the tensile test when the indentation size effect is taken into account. Fine grained HEA has very close Critical Resolved Shear Stress values for slip and twinning. Workplace Institute of Physics of Materials Contact Yvonna Šrámková, sramkova@ipm.cz, Tel.: 532 290 485 Year of Publishing 2021 Electronic address https://www.sciencedirect.com/science/article/pii/S0921509320303798?via%3Dihub
Number of the records: 1