Tailoring the physical properties of Ni-based single-phase equiatomic alloys by modifying the chemical complexity

Scientific Reports
Ke JinHongbin Bei

Abstract

Equiatomic alloys (e.g. high entropy alloys) have recently attracted considerable interest due to their exceptional properties, which might be closely related to their extreme disorder induced by the chemical complexity. In order to understand the effects of chemical complexity on their fundamental physical properties, a family of (eight) Ni-based, face-center-cubic (FCC), equiatomic alloys, extending from elemental Ni to quinary high entropy alloys, has been synthesized, and their electrical, thermal, and magnetic properties are systematically investigated in the range of 4-300 K by combining experiments with ab initio Korring-Kohn-Rostoker coherent-potential-approximation (KKR-CPA) calculations. The scattering of electrons is significantly increased due to the chemical (especially magnetic) disorder. It has weak correlation with the number of elements but strongly depends on the type of elements. Thermal conductivities of the alloys are largely lower than pure metals, primarily because the high electrical resistivity suppresses the electronic thermal conductivity. The temperature dependence of the electrical and thermal transport properties is further discussed, and the magnetization of five alloys containing three or more el...Continue Reading

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Citations

May 18, 2016·Scientific Reports·Brian C SalesMichael A McGuire
Apr 2, 2016·Journal of Physics. Condensed Matter : an Institute of Physics Journal·G D SamolyukR E Stoller
Jun 25, 2017·Scientific Reports·Mohammad W UllahYanwen Zhang
May 20, 2020·Nature Communications·Binglun YinW A Curtin
Jun 6, 2017·Physical Review Letters·F X ZhangYanwen Zhang
Sep 29, 2018·Physical Review Letters·Rafi UllahAlfredo A Correa
Feb 15, 2020·Physical Review Letters·Hannah C RobartsStephen B Dugdale
Jul 28, 2020·The Journal of Chemical Physics·Fuyang TianHai-Feng Song
Oct 31, 2018·Nature Communications·L J SantodonatoJ R Morris
Oct 20, 2020·Physical Chemistry Chemical Physics : PCCP·Damian SobierajDuc Nguyen-Manh
Jan 15, 2021·Entropy·Ed J PickeringAmy S Gandy
Oct 31, 2018·Entropy·Yang WangBingchen Wei
Jan 30, 2021·Physical Review Letters·G D SamolyukJ R Morris

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Methods Mentioned

BETA
electron scattering
neutron scattering

Software Mentioned

KKR
Hutsepot

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