A cuboidal B2 nanoprecipitation-enhanced body-centered-cubic alloy Al0.7CoCrFe2Ni with prominent tensile properties. (15th July 2016)

• Record Type: Journal Article
• Authors: Wang, Qing; Ma, Yue; Jiang, Beibei; Li, Xiaona; Shi, Yao; Dong, Chuang; Liaw, Peter K.
• Is Part Of: Scripta materialia. Volume 120(2016)
• Page Start: 85
• Page End: 89
• Publication Date: 2016-07-15
• Subjects: Multi-principal-element alloy -- Alloy design -- Cluster-plus-glue-atom model -- Coherent precipitation -- Mechanical properties; Materials -- Periodicals; Metallurgy -- Periodicals; Metalen; Legeringen; Materiaalkunde; Metals, metalworking and machinery industries; Metals; Electronic journals; 620.11
• DOI: 10.1016/j.scriptamat.2016.04.014
• Languages: English
• ISSNs: 1359-6462

Abstract

Abstract: The present work reports a cuboidal B2-coherently-enhanced body-centered-cubic (BCC) alloy Al0.7 CoCrFe2 Ni with prominent tensile properties at both room (ultimate tensile strength σ b = 1223 MPa and elongation to fracture δ = 7.9%) and high temperatures. This multi-principal-element alloy is developed out of a cluster formula [Al–M14 ]Al1 issued from the cluster-plus-glue-atom model of a BCC structure. Here, the [Al–M14 ] cluster is centered by Al, surrounded by fourteen average atoms M = Co1/5 Cr1/5 Fe2/5 Ni1/5, and glued with one Al atom. Its excellent mechanical properties are attributed to a superalloy-like microstructure, characterized by cuboidal B2 nanoprecipitates coherently embedded in the BCC matrix. Graphical abstract: