A comparison study of local lattice distortion in Ni80Pd20 binary alloy and FeCoNiCrPd high-entropy alloy
Journal Article
·
· Scripta Materialia
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Division of Materials Science and Technology
- Cornell Univ., Ithaca, NY (United States). Cornell High Energy Synchrotron Source
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Division of Materials Science and Technology; Univ. of Tennessee, Knoxville, TN (United States). Dept. of Materials Science and Engineering
In this paper, the effect of alloying Pd on the local lattice distortion (LLD) in the Ni and FeCoNiCr host matrixes is quantified by integrating local structure characterization and theoretical calculations. The local structure measurements reveal that the mean LLD in the FeCoNiCrPd high-entropy alloy (HEA) is twice as high as the Ni80Pd20 binary alloy though the FeCoNiCr base alloy has a negligible mean LLD. Density functional theory calculations unveil that the unexpected high mean LLD in FeCoNiCrPd is related to the high fluctuation of LLD in the FeCoNiCr matrix. Finally, these observations suggest a synergetic effect of chemical complexity on HEAs' mean LLD.
- Research Organization:
- Energy Frontier Research Centers (EFRC) (United States). Energy Dissipation to Defect Evolution (EDDE); Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States); Cornell Univ., Ithaca, NY (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), Basic Energy Sciences (BES); National Science Foundation (NSF)
- Grant/Contract Number:
- AC05-00OR22725; DMR-1332208
- OSTI ID:
- 1462847
- Alternate ID(s):
- OSTI ID: 1702206
- Journal Information:
- Scripta Materialia, Vol. 156; ISSN 1359-6462
- Publisher:
- ElsevierCopyright Statement
- Country of Publication:
- United States
- Language:
- English
Cited by: 34 works
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