Variations of the Elastic Properties of the CoCrFeMnNi High Entropy Alloy Deformed by Groove Cold Rolling
| Autor: | LOHMULLER, Paul, PELTIER, Laurent, Hazotte, Alain, Zollinger, Julien, Laheurte, Pascal, Fleury, Eric |
|---|---|
| Přispěvatelé: | Laboratoire d'Etude des Microstructures et de Mécanique des Matériaux (LEM3), Centre National de la Recherche Scientifique (CNRS)-Université de Lorraine (UL)-Arts et Métiers Sciences et Technologies, HESAM Université (HESAM)-HESAM Université (HESAM), Labex DAMAS, Université de Lorraine (UL), Institut Jean Lamour (IJL), Université de Lorraine (UL)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), ANR-11-LABX-0008,DAMAS,Design des Alliages Métalliques pour Allègement des Structures(2011) |
| Jazyk: | angličtina |
| Rok vydání: | 2018 |
| Předmět: |
Matériaux [Sciences de l'ingénieur]
lcsh:QH201-278.5 groove rolling lcsh:T Mécanique [Sciences de l'ingénieur] lcsh:Technology Article lcsh:TA1-2040 crystallographic texture [PHYS.COND.CM-MS]Physics [physics]/Condensed Matter [cond-mat]/Materials Science [cond-mat.mtrl-sci] lcsh:Descriptive and experimental mechanics General Materials Science lcsh:Electrical engineering. Electronics. Nuclear engineering High entropy alloy elastic properties lcsh:Engineering (General). Civil engineering (General) lcsh:Microscopy lcsh:TK1-9971 high entropy alloy lcsh:QC120-168.85 |
| Zdroj: | Materials Materials, MDPI, 2018, 11 (8), pp.1337. ⟨10.3390/ma11081337⟩ Volume 11 Issue 8 Materials, Vol 11, Iss 8, p 1337 (2018) |
| ISSN: | 1996-1944 |
| DOI: | 10.3390/ma11081337⟩ |
| Popis: | The variations of the mechanical properties of the CoCrFeMnNi high entropy alloy (HEA) during groove cold rolling process were investigated with the aim of understanding their correlation relationships with the crystallographic texture. Our study revealed divergences in the variations of the microhardness and yield strength measured from samples deformed by groove cold rolling and conventional cold rolling processes. The crystallographic texture analyzed by electron back scattered diffraction (EBSD) revealed a hybrid texture between those obtained by conventional rolling and drawing processes. Though the groove cold rolling process induced a marked strengthening effect in the CoCrFeMnNi HEA, the mechanical properties were also characterized by an unusual decrease of the Young&rsquo s modulus as the applied groove cold rolled deformation increased up to about 0.5 before reaching a stabilized value. This decrease of the Young&rsquo s modulus was attributed to the increased density of mobile dislocations induced by work hardening during groove cold rolling processing. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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