1. Design of a metallic glass dispersion in pure copper by friction stir processing
- Author
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Avettand-Fènoël, M.-N., Netto, N., Simar, A., Marinova, M., Taillard, R., Univ. Lille - UMET, Unité Matériaux et Transformations, UCL - SST/IMMC/IMAP - Materials and process engineering, Univ. Lille - IMEC, Institut Michel-Eugène Chevreul, Unité Matériaux et Transformations - UMR 8207 (UMET), Centrale Lille-Institut de Chimie du CNRS (INC)-Université de Lille-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE), Faculté de Médecine et Médecine Dentaire [UCLouvain], Université Catholique de Louvain = Catholic University of Louvain (UCL), Institut Michel Eugène Chevreul - FR 2638 (IMEC), Université d'Artois (UA)-Centrale Lille-Institut de Chimie du CNRS (INC)-Université de Lille-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE), Institut National de la Recherche Agronomique (INRA)-Ecole Nationale Supérieure de Chimie de Lille (ENSCL)-Institut de Chimie du CNRS (INC)-Université de Lille-Centre National de la Recherche Scientifique (CNRS), and University of Lille
- Subjects
Metallic glass reinforcement ,Mechanical Engineering ,Metals and Alloys ,Mechanical properties ,[CHIM.MATE]Chemical Sciences/Material chemistry ,Friction stir processing ,Metallic glass reinforcement [A] ,Friction stir processing phase transformations [B] ,Copper [A] ,Mechanics of Materials ,Mechanical properties [C] ,[PHYS.COND.CM-MS]Physics [physics]/Condensed Matter [cond-mat]/Materials Science [cond-mat.mtrl-sci] ,Materials Chemistry ,Phase transformations ,Microstructure ,Copper ,Microstructure [C] - Abstract
International audience; Multipass friction stir processing of Fe based metallic glass ribbons interspersed between Cu plates was performed. From the first pass, the process entailed on the one hand the decrease of the Cu mean grain size in the nugget by a factor of about 5 and on the other hand the fracture, the refinement and the partial crystallization of the amorphous reinforcement. Cu diffusion also led to marked Cu enrichments in the Fe based metallic glass whose mean Cu content reached 2.7 at%. Beside the metallic glass based reinforcements, some nanometric polycrystalline copper oxides were formed and dispersed within the nugget. The nugget also experienced dynamic recovery and dynamic recrystallization which was in particular favored by the accumulation of dislocations around the reinforcements. Finally, the greater number of passes, the harder the nugget becomes.
- Published
- 2022
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