Understanding the influence of high-strength submicron precipitate on the fracture performance of additively-manufactured aluminum alloy
North University of China · Beijing University of Technology · +1 more institution
Abstract
• The formation process of submicron precipitate and its influence mechanism on the mechanical performance are first revealed in the Al-Cu-Ni alloy during additive manufacturing-heat treatment. • The microstructure evolution from manufacturing to fracture is analyzed systematically, and the coordinated strength-ductility performance is achieved by microstructure regulation. • The in-situ dislocation motion and crack propagation are newly studied in Al-Cu-Ni alloy to provide direct evidences for its fracture failure mechanism. • Novel findings are grained that the submicron grain-boundary Al 7 Cu 4 Ni precipitate and dislocation entanglement present the obstruction effect on the intergranular and intragranular…
Citation impact
- FWCI
- 25.63
- Percentile
- 100%
- References
- 98
Authors
10Topics & keywords
- Materials science
- Alloy
- Fracture (geology)
- Aluminium
- Metallurgy
- Composite material