Ultrastrong steel via minimal lattice misfit and high-density nanoprecipitation

By Suihe Jiang, Hui Wang, Yuan Wu, Xiongjun Liu, Honghong Chen, Mengji Yao, Baptiste Gault, D. Ponge, Dierk Raabe, A. Hirata and 3 more. Nature, 2017

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Critical microstructures and defects in heterostructured materials and their effects on mechanical properties (2020, background): “Advanced structural materials with outstanding mechanical properties have always been in high demand by industries due to safety, environmental and economical requirements [1,2].”
L1_2-strengthened high-entropy alloys for advanced structural applications (2018, background): “As reported in previous studies, the formation of brittle intermetallics at grain boundaries causes a local stress/strain concentration and promotes the crack initiation during deformation, all of which in turn catastrophically damages the tensile ductility and fracture toughness.(72) For example, i”
Massive nanoprecipitation in an Fe-19Ni-xAl maraging steel triggered by the intrinsic heat treatment during laser metal deposition (2017, neutral): “14% [26] with the surrounding martensitic matrix, NiAl precipitates are found to have a spherical shape [30] up to a size of about 45 nm diameter when they start to adopt a cuboidal shape.”
Controlled formation of coherent cuboidal nanoprecipitates in body-centered cubic high-entropy alloys based on Al2(Ni,Co,Fe,Cr)14 compositions (2018, background): “Coherent nanoprecipitation has not yet been developed to enhance ultra-high strength ferritic steels [40,41].”