Proceedings of the XMO Industrial Seminar 2026: Excellence in Manufacturing and Operations
Keywords
Additive manufacturing; Metastable precipitates; Nanostructures; Aluminum alloys; Nickel superalloys; Mechanical behavior
Tracks
CONVERGENT MANUFACTURING
DOI
10.5703/1288284318692
Abstract
This review highlights how additive manufacturing (AM) enables the formation of metastable nanoscale precipitates through rapid nonequilibrium solidification and cyclic thermal histories, leading to mechanical properties unattainable by conventional processing. Recent advances in AM Al- and Ni-based alloys are discussed with emphasis on the relationship between nanoscale heterogeneity and deformation behavior. In Al alloys, nanolamellar intermetallic architectures generate strong heterostructure-induced back stresses and enable ultrahigh compressive strengths approaching 1 GPa while maintaining deformability. In Ni-based systems, in situ oxide nanoprecipitates improve high-temperature mechanical behavior of 718 Ni alloys, while nanoprecipitate evolution in Haynes 230 Ni alloys promotes deformation twinning. These studies collectively demonstrate that AM is not only a manufacturing route for complex geometries, but also a powerful nonequilibrium microstructure design strategy for next-generation high-performance structural materials.
Microstructure and mechanical behavior of high strength additive alloys with nanoscale precipitates
This review highlights how additive manufacturing (AM) enables the formation of metastable nanoscale precipitates through rapid nonequilibrium solidification and cyclic thermal histories, leading to mechanical properties unattainable by conventional processing. Recent advances in AM Al- and Ni-based alloys are discussed with emphasis on the relationship between nanoscale heterogeneity and deformation behavior. In Al alloys, nanolamellar intermetallic architectures generate strong heterostructure-induced back stresses and enable ultrahigh compressive strengths approaching 1 GPa while maintaining deformability. In Ni-based systems, in situ oxide nanoprecipitates improve high-temperature mechanical behavior of 718 Ni alloys, while nanoprecipitate evolution in Haynes 230 Ni alloys promotes deformation twinning. These studies collectively demonstrate that AM is not only a manufacturing route for complex geometries, but also a powerful nonequilibrium microstructure design strategy for next-generation high-performance structural materials.