Change in the primary solidification phase from fcc to bcc-based B2 in high entropy or complex concentrated alloys
GWALANI, B.
Department of Materials Science and Engineering
Advanced Materials and Manufacturing Processes Institute
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Department of Materials Science and Engineering
Advanced Materials and Manufacturing Processes Institute
GWALANI, B.
Department of Materials Science and Engineering
Advanced Materials and Manufacturing Processes Institute
Department of Materials Science and Engineering
Advanced Materials and Manufacturing Processes Institute
GORSSE, Stéphane
Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
Wright State University
Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
Wright State University
BANERJEE, R.
Department of Materials Science and Engineering
School of Materials Science and Engineering
Advanced Materials and Manufacturing Processes Institute
< Reduce
Department of Materials Science and Engineering
School of Materials Science and Engineering
Advanced Materials and Manufacturing Processes Institute
Language
en
Article de revue
This item was published in
Scripta Materialia. 2017, vol. 127, p. 186–190
Elsevier
English Abstract
An examination of a compositionally graded AlxCuCrFeNi2 high entropy alloy (HEA) or complex concentrated alloy (CCA), revealed that marginally increasing Al content from x = 0.8 to x = 1.0 (+ 6 at.%) changes the primary ...Read more >
An examination of a compositionally graded AlxCuCrFeNi2 high entropy alloy (HEA) or complex concentrated alloy (CCA), revealed that marginally increasing Al content from x = 0.8 to x = 1.0 (+ 6 at.%) changes the primary solidification phase from a simple disordered-fcc to a bcc-based ordered-B2 phase. Subsequently, a second solidification product forms, a disordered-bcc in case of x = 0.8 and a disordered-fcc in case of x = 1.0. Solid-state decomposition within these phases results in fcc + L12 and bcc + B2 products, accompanied by compositional partitioning. These results provide new insights into the influence of Al on the primary solidification product, and have been rationalized using a computational thermodynamic approach.Read less <
English Keywords
High entropy alloys
Complex concentrated alloys
Microscopy
Thermodynamic modeling
Lens
Origin
Hal imported