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Structure, mechanical properties and nanocrystallization of (FeCoCrNi)-(B,Si) high-entropy metallic glasses
Panahi, S. Leila (Universitat Politècnica de Catalunya. Departament de Física)
Fornell Beringues, Jordina (Universitat Autònoma de Barcelona. Departament de Física)
Popescu, Catalin (ALBA Laboratori de Llum de Sincrotró)
Pineda, Eloi (Universitat Politècnica de Catalunya. Departament de Física)
Sort Viñas, Jordi (Universitat Autònoma de Barcelona. Departament de Física)
Bruna, Pere (Universitat Politècnica de Catalunya. Institut de Tècniques Energètiques)

Date: 2022
Abstract: New high-entropy metallic glasses were produced by adding B and Si to the Fe25Co25Cr25Ni25 high entropy alloy. Extremely hard materials were obtained by inducing structural relaxation and nanocrystallization in the original amorphous metals. In this work we study the effects of the composition and annealing treatments on the structure and the mechanical properties. The changes in structure during heating treatments were determined by in situ synchrotron X-ray diffraction and the mechanical behavior was studied by nanoindentation. The mechanical properties of the as-quenched glasses were tuned through the annealing treatments, obtaining amorphous/nanocrystalline composites appropriate for highly demanding, wear resistance applications. The relative amount of B and Si is shown to determine the main nanocrystalline phase, FCC or BCC, which has a key influence on the mechanical properties.
Grants: Agencia Estatal de Investigación PID2020-112975GB-I00
Agència de Gestió d'Ajuts Universitaris i de Recerca 2018FI_B_00502
Agència de Gestió d'Ajuts Universitaris i de Recerca 2017/SGR-42
Agencia Estatal de Investigación MAT2017-86357-C3-1-R
Agència de Gestió d'Ajuts Universitaris i de Recerca 2017/SGR-292
Rights: Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, i la comunicació pública de l'obra, sempre que no sigui amb finalitats comercials, i sempre que es reconegui l'autoria de l'obra original. No es permet la creació d'obres derivades. Creative Commons
Language: Anglès
Document: Article ; recerca ; Versió publicada
Subject: High-entropy alloys ; Synchrotron radiation ; Nanoindentation ; Metallic glass
Published in: Intermetallics, Vol. 141 (February 2022) , art. 107432, ISSN 1879-0216

DOI: 10.1016/j.intermet.2021.107432


10 p, 4.8 MB

The record appears in these collections:
Research literature > UAB research groups literature > Research Centres and Groups (research output) > Experimental sciences > Group of Smart Nanoengineered Materials, Nanomechanics and Nanomagnetism (Gnm3)
Research literature > UAB research groups literature > Research Centres and Groups (research output) > Experimental sciences > The ALBA Synchrotron
Articles > Research articles
Articles > Published articles

 Record created 2023-02-14, last modified 2023-12-07



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