Journal Article

FZJ-2019-01581

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Chemical short-range orders and the induced structural transition in high-entropy alloys

Ma, Y. ; Wang, Q. ; Li, C. ; Santodonato, L. J. ; Feygenson, M.FZJ* ; Dong, C. ; Liaw, P. K. (Corresponding author)

2018
Elsevier Science Amsterdam [u.a.]

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Please use a persistent id in citations: doi:10.1016/j.scriptamat.2017.09.049

Abstract: The present work verifies the existence of chemical short-range orders (CSROs) in high-entropy alloys (HEAs) using a cluster-plus-glue-atom model. Two HEAs with a composition of Al2M14 (M = Ni4Co4Fe3Cr3 or Ni1Co1Fe2Cr1) are designed, which is derived from the cluster model of [Al-M12](M2Al1) in face-centered-cubic structure or [Al-M14]Al1 in body-centered-cubic structure. It is found that the calculated pair-distribution functions (PDFs) at short inter-atomic distances by these cluster models can describe the neutron PDFs better than the ones by the average crystal structures. It is due to the different CSROs characterized by cluster units that induce the structural transition of HEAs.

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Contributing Institute(s):

1. Neutronenstreuung (ICS-1)
2. Neutronenstreuung (Neutronenstreuung ; JCNS-1)

Research Program(s):

1. 551 - Functional Macromolecules and Complexes (POF3-551) (POF3-551)
2. 6215 - Soft Matter, Health and Life Sciences (POF3-621) (POF3-621)
3. 6G4 - Jülich Centre for Neutron Research (JCNS) (POF3-623) (POF3-623)

Appears in the scientific report 2019

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Database coverage:
; Clarivate Analytics Master Journal List ; Current Contents - Engineering, Computing and Technology ; Current Contents - Physical, Chemical and Earth Sciences ; Ebsco Academic Search ; IF < 5 ; JCR ; SCOPUS ; Science Citation Index ; Science Citation Index Expanded ; Web of Science Core Collection

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