A study of lattice elasticity from low entropy metals to medium and high entropy alloys

E-Wen Huang; Dunji Yu; Jien Wei Yeh; Chi Lee; Ke An; Shan Yi Tu

doi:10.1016/j.scriptamat.2015.01.011

A study of lattice elasticity from low entropy metals to medium and high entropy alloys

E-Wen Huang^*, Dunji Yu, Jien Wei Yeh, Chi Lee, Ke An, Shan Yi Tu

^*Corresponding author for this work

Department of Materials Science and Engineering

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

37 Scopus citations

Abstract

An equal-molar CoCrFeMnNi, face-centered-cubic high-entropy alloy system and a face-centered-cubic stainless steel described as a medium-entropy system, are measured by in situ neutron-diffraction experiments subjected to continuous tension at room and several elevated temperatures, respectively. With spallation neutron, the evolution of multiple diffraction peaks is collected simultaneously for lattice-elasticity study. Temperature variation of elastic stiffness of a single face-centered-cubic-phase Ni and a single face-centered-cubic-phase Fe are compared as low-entropy metals. The CoCrFeMnNi high-entropy alloy shows distinct lattice anisotropy.

Original language	English
Pages (from-to)	32-35
Number of pages	4
Journal	Scripta Materialia
Volume	101
DOIs	https://doi.org/10.1016/j.scriptamat.2015.01.011
State	Published - 1 May 2015

Keywords

Elastic behavior
High entropy alloy
Metal and alloys
Microstructure
Neutron diffraction

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title = "A study of lattice elasticity from low entropy metals to medium and high entropy alloys",

abstract = "An equal-molar CoCrFeMnNi, face-centered-cubic high-entropy alloy system and a face-centered-cubic stainless steel described as a medium-entropy system, are measured by in situ neutron-diffraction experiments subjected to continuous tension at room and several elevated temperatures, respectively. With spallation neutron, the evolution of multiple diffraction peaks is collected simultaneously for lattice-elasticity study. Temperature variation of elastic stiffness of a single face-centered-cubic-phase Ni and a single face-centered-cubic-phase Fe are compared as low-entropy metals. The CoCrFeMnNi high-entropy alloy shows distinct lattice anisotropy.",

keywords = "Elastic behavior, High entropy alloy, Metal and alloys, Microstructure, Neutron diffraction",

author = "E-Wen Huang and Dunji Yu and Yeh, {Jien Wei} and Chi Lee and Ke An and Tu, {Shan Yi}",

year = "2015",

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T1 - A study of lattice elasticity from low entropy metals to medium and high entropy alloys

AU - Huang, E-Wen

AU - Yu, Dunji

AU - Yeh, Jien Wei

AU - Lee, Chi

AU - An, Ke

AU - Tu, Shan Yi

PY - 2015/5/1

Y1 - 2015/5/1

N2 - An equal-molar CoCrFeMnNi, face-centered-cubic high-entropy alloy system and a face-centered-cubic stainless steel described as a medium-entropy system, are measured by in situ neutron-diffraction experiments subjected to continuous tension at room and several elevated temperatures, respectively. With spallation neutron, the evolution of multiple diffraction peaks is collected simultaneously for lattice-elasticity study. Temperature variation of elastic stiffness of a single face-centered-cubic-phase Ni and a single face-centered-cubic-phase Fe are compared as low-entropy metals. The CoCrFeMnNi high-entropy alloy shows distinct lattice anisotropy.

AB - An equal-molar CoCrFeMnNi, face-centered-cubic high-entropy alloy system and a face-centered-cubic stainless steel described as a medium-entropy system, are measured by in situ neutron-diffraction experiments subjected to continuous tension at room and several elevated temperatures, respectively. With spallation neutron, the evolution of multiple diffraction peaks is collected simultaneously for lattice-elasticity study. Temperature variation of elastic stiffness of a single face-centered-cubic-phase Ni and a single face-centered-cubic-phase Fe are compared as low-entropy metals. The CoCrFeMnNi high-entropy alloy shows distinct lattice anisotropy.

KW - Elastic behavior

KW - High entropy alloy

KW - Metal and alloys

KW - Microstructure

KW - Neutron diffraction

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