Local lattice distortion in NiCoCr, FeCoNiCr and FeCoNiCrMn concentrated alloys investigated by synchrotron X-ray diffraction

Y. Tong; K. Jin; H. Bei; J. Y.P. Ko; D. C. Pagan; Y. Zhang; F. X. Zhang

doi:10.1016/j.matdes.2018.05.056

Local lattice distortion in NiCoCr, FeCoNiCr and FeCoNiCrMn concentrated alloys investigated by synchrotron X-ray diffraction

Y. Tong, K. Jin, H. Bei, J. Y.P. Ko, D. C. Pagan, Y. Zhang, F. X. Zhang^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

118 Citations (Scopus)

Abstract

Severe lattice distortion is presumptively considered as a core effect of high-entropy alloys, but quantitative measurements are still missing. Here, we demonstrate that the lattice distortion in high-entropy alloys can be quantitatively analyzed based on pair distribution function obtained from synchrotron X-ray diffraction. By applying this method to equiatomic NiCoCr, FeCoNiCr and FeCoNiCrMn concentrated alloys, we found that the local lattice distortion in the NiCoCr (0.23%) and FeCoNiCrMn (0.24%) alloys are comparable while negligible in the FeCoNiCr alloy (0.04%). The origin of local lattice distortion in the NiCoCr and FeCoNiCrMn concentrated alloys was discussed.

Original language	English
Pages (from-to)	1-7
Number of pages	7
Journal	Materials and Design
Volume	155
DOIs	https://doi.org/10.1016/j.matdes.2018.05.056
Publication status	Published - 5 Oct 2018
Externally published	Yes

Keywords

High-entropy alloys
Lattice distortion
Pair distribution function
Synchrotron X-ray diffraction

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10.1016/j.matdes.2018.05.056

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title = "Local lattice distortion in NiCoCr, FeCoNiCr and FeCoNiCrMn concentrated alloys investigated by synchrotron X-ray diffraction",

abstract = "Severe lattice distortion is presumptively considered as a core effect of high-entropy alloys, but quantitative measurements are still missing. Here, we demonstrate that the lattice distortion in high-entropy alloys can be quantitatively analyzed based on pair distribution function obtained from synchrotron X-ray diffraction. By applying this method to equiatomic NiCoCr, FeCoNiCr and FeCoNiCrMn concentrated alloys, we found that the local lattice distortion in the NiCoCr (0.23%) and FeCoNiCrMn (0.24%) alloys are comparable while negligible in the FeCoNiCr alloy (0.04%). The origin of local lattice distortion in the NiCoCr and FeCoNiCrMn concentrated alloys was discussed.",

keywords = "High-entropy alloys, Lattice distortion, Pair distribution function, Synchrotron X-ray diffraction",

author = "Y. Tong and K. Jin and H. Bei and Ko, {J. Y.P.} and Pagan, {D. C.} and Y. Zhang and Zhang, {F. X.}",

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doi = "10.1016/j.matdes.2018.05.056",

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T1 - Local lattice distortion in NiCoCr, FeCoNiCr and FeCoNiCrMn concentrated alloys investigated by synchrotron X-ray diffraction

AU - Tong, Y.

AU - Jin, K.

AU - Bei, H.

AU - Ko, J. Y.P.

AU - Pagan, D. C.

AU - Zhang, Y.

AU - Zhang, F. X.

PY - 2018/10/5

Y1 - 2018/10/5

N2 - Severe lattice distortion is presumptively considered as a core effect of high-entropy alloys, but quantitative measurements are still missing. Here, we demonstrate that the lattice distortion in high-entropy alloys can be quantitatively analyzed based on pair distribution function obtained from synchrotron X-ray diffraction. By applying this method to equiatomic NiCoCr, FeCoNiCr and FeCoNiCrMn concentrated alloys, we found that the local lattice distortion in the NiCoCr (0.23%) and FeCoNiCrMn (0.24%) alloys are comparable while negligible in the FeCoNiCr alloy (0.04%). The origin of local lattice distortion in the NiCoCr and FeCoNiCrMn concentrated alloys was discussed.

AB - Severe lattice distortion is presumptively considered as a core effect of high-entropy alloys, but quantitative measurements are still missing. Here, we demonstrate that the lattice distortion in high-entropy alloys can be quantitatively analyzed based on pair distribution function obtained from synchrotron X-ray diffraction. By applying this method to equiatomic NiCoCr, FeCoNiCr and FeCoNiCrMn concentrated alloys, we found that the local lattice distortion in the NiCoCr (0.23%) and FeCoNiCrMn (0.24%) alloys are comparable while negligible in the FeCoNiCr alloy (0.04%). The origin of local lattice distortion in the NiCoCr and FeCoNiCrMn concentrated alloys was discussed.

KW - High-entropy alloys

KW - Lattice distortion

KW - Pair distribution function

KW - Synchrotron X-ray diffraction

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U2 - 10.1016/j.matdes.2018.05.056

DO - 10.1016/j.matdes.2018.05.056

M3 - Article

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SN - 0264-1275

VL - 155

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EP - 7

JO - Materials and Design

JF - Materials and Design

ER -

Local lattice distortion in NiCoCr, FeCoNiCr and FeCoNiCrMn concentrated alloys investigated by synchrotron X-ray diffraction

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Keywords

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