Correlation between lattice distortion and friction stress in Ni-based equiatomic alloys
Research output: Journal Publications and Reviews (RGC: 21, 22, 62) › 21_Publication in refereed journal › peer-review
Author(s)
Detail(s)
Original language | English |
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Pages (from-to) | 45-50 |
Journal / Publication | Intermetallics |
Volume | 86 |
Online published | 21 Mar 2017 |
Publication status | Published - Jul 2017 |
Externally published | Yes |
Link(s)
Abstract
Many recent efforts have been made to apply traditional theories for solid solution strengthening to explain the strength increase in concentrated equiatomic alloys (or high-entropy alloys), but always faced the challenge of differentiating solvent from solute atoms. In this report, we conducted a systematical analysis of Ni-based equiatomic alloys with a face-centered cubic structure and found that the lattice distortion in this alloy system could be simply described by the parameter of atomic size mismatch. It was found that lattice friction stresses of these alloys were well correlated with the lattice distortion. Dislocation core width in this Ni-based alloy system was also estimated and compared with that in the pure nickel. The intrinsically high strength in high-entropy alloys was probably resulted from a high lattice friction stress.
Research Area(s)
- Dislocation core width, High-entropy alloys, Lattice distortion, Lattice friction stress, Yield strength
Citation Format(s)
Correlation between lattice distortion and friction stress in Ni-based equiatomic alloys. / Zhao, Y.Y.; Nieh, T.G.
In: Intermetallics, Vol. 86, 07.2017, p. 45-50.Research output: Journal Publications and Reviews (RGC: 21, 22, 62) › 21_Publication in refereed journal › peer-review