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Effects of mechanical heterogeneity and dislocation storage capacity on the strength–ductility synergy of heterostructured laminates.
- Source :
-
Materials Science & Engineering: A . Mar2024, Vol. 896, pN.PAG-N.PAG. 1p. - Publication Year :
- 2024
-
Abstract
- Heterostructured laminates have attracted significant attention in the materials community owing to their exceptional combination of strength and ductility. However, long-standing questions remain regarding the impact of the strength difference between the soft and hard layers on the synergistic strengthening in hetero-laminates with weak mechanical heterogeneity; the role played by soft/hard layers with various dislocation storage capacities on the strength–ductility synergy is also poorly understood. In this study, a series of typical heterostructured copper–brass laminates were fabricated using the diffusion welding + forging + rolling + annealing technique. The results demonstrated that larger microstructural and mechanical heterogeneities improved the strength–ductility combination of the hetero-laminates. The relatively weak mechanical heterogeneity and superior dislocation storage capacity of the soft copper and hard brass layers facilitated inter-layer synergistic deformation. This induced a gradual distribution of local strains and geometrically necessary dislocations (GNDs) near the hetero-interface. Thus, when evaluating the role of soft layers in synergistic strengthening, it is crucial to consider their generation and storage capabilities for dislocations. [ABSTRACT FROM AUTHOR]
- Subjects :
- *DIFFUSION bonding (Metals)
*HETEROGENEITY
*LAMINATED materials
*COPPER
*STORAGE
Subjects
Details
- Language :
- English
- ISSN :
- 09215093
- Volume :
- 896
- Database :
- Academic Search Index
- Journal :
- Materials Science & Engineering: A
- Publication Type :
- Academic Journal
- Accession number :
- 176099637
- Full Text :
- https://doi.org/10.1016/j.msea.2024.146281