Predicting ductility in quaternary B2-like alloysShow others and affiliations
2021 (English)In: Physical Review Materials, E-ISSN 2475-9953, Vol. 5, no 3, article id 033604Article in journal (Refereed) Published
Abstract [en]
Although intermetallics with a B2-type crystal structure are typically brittle, a class of B2 intermetallics that demonstrates unusually high ductility has been reported. A set of recently developed B2-like quaternary precious metal-rare earth alloys also includes compositions with significant ductility. To predict ductility in these systems, we have adapted a computational energy-based metric based on slip systems and relative stability of planar defects, developed to predict ductility in B2 binary systems, for use with quaternary B2-like alloys. The computational metric successfully predicts the experimentally-determined ductility or brittleness of 15 B2-like quaternary precious metal-rare earth and refractory alloys.
Place, publisher, year, edition, pages
American Physical Society, 2021. Vol. 5, no 3, article id 033604
Keywords [en]
Crystal structure, Ductility, Forecasting, Fracture mechanics, Intermetallics, Precious metals, Rare earths, Refractory alloys, Refractory metals, Binary systems, Energy-based, Planar defect, Relative stabilities, Slip system, Precious metal alloys
National Category
Metallurgy and Metallic Materials
Identifiers
URN: urn:nbn:se:hj:diva-55615DOI: 10.1103/PhysRevMaterials.5.033604ISI: 000627754300001Scopus ID: 2-s2.0-85104469442OAI: oai:DiVA.org:hj-55615DiVA, id: diva2:1629574
2022-01-182022-01-182022-01-18Bibliographically approved