Comparing cyclic tension-compression effects on CoCrFeMnNi high-entropy alloy and Ni-based superalloy

Tu Ngoc Lam; You Shiun Chou; Yao Jen Chang; Tsung Ruei Sui; An Chou Yeh; Stefanus Harjo; Soo Yeol Lee; Jayant Jain; Bo Hong Lai; E-Wen Huang

doi:10.3390/cryst9080420

Comparing cyclic tension-compression effects on CoCrFeMnNi high-entropy alloy and Ni-based superalloy

Tu Ngoc Lam, You Shiun Chou, Yao Jen Chang, Tsung Ruei Sui, An Chou Yeh, Stefanus Harjo, Soo Yeol Lee^*, Jayant Jain, Bo Hong Lai, E-Wen Huang

^*Corresponding author for this work

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

5 Scopus citations

Abstract

An equal-molar CoCrFeMnNi, face-centered-cubic (fcc) high-entropy alloy (HEA) and a nickel-based superalloy are studied using in situ neutron diffraction experiments. With continuous measurements, the evolution of diffraction peaks is collected for microscopic lattice strain analyses. Cyclic hardening and softening are found in both metallic systems. However, as obtained from the diffraction-peak-width evolution, the underneath deformation mechanisms are quite different. The CoCrFeMnNi HEA exhibits distinct lattice strain and microstructure responses under tension-compression cyclic loadings.

Original language	English
Article number	420
Number of pages	8
Journal	Crystals
Volume	9
Issue number	8
DOIs	https://doi.org/10.3390/cryst9080420 https://doi.org/10.3390/cryst9080420
State	Published - Aug 2019

Keywords

in-situ neutron diffraction
low-cycle fatigue
high entropy alloy
Ni-based superalloy
CRACK GROWTH-BEHAVIOR
FATIGUE BEHAVIOR
NEUTRON-DIFFRACTION
DEFORMATION
TEMPERATURE
DISLOCATION
EVOLUTION
STRESS
METALS

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title = "Comparing cyclic tension-compression effects on CoCrFeMnNi high-entropy alloy and Ni-based superalloy",

abstract = "An equal-molar CoCrFeMnNi, face-centered-cubic (fcc) high-entropy alloy (HEA) and a nickel-based superalloy are studied using in situ neutron diffraction experiments. With continuous measurements, the evolution of diffraction peaks is collected for microscopic lattice strain analyses. Cyclic hardening and softening are found in both metallic systems. However, as obtained from the diffraction-peak-width evolution, the underneath deformation mechanisms are quite different. The CoCrFeMnNi HEA exhibits distinct lattice strain and microstructure responses under tension-compression cyclic loadings.",

keywords = "in-situ neutron diffraction, low-cycle fatigue, high entropy alloy, Ni-based superalloy, CRACK GROWTH-BEHAVIOR, FATIGUE BEHAVIOR, NEUTRON-DIFFRACTION, DEFORMATION, TEMPERATURE, DISLOCATION, EVOLUTION, STRESS, METALS",

author = "Lam, {Tu Ngoc} and Chou, {You Shiun} and Chang, {Yao Jen} and Sui, {Tsung Ruei} and Yeh, {An Chou} and Stefanus Harjo and Lee, {Soo Yeol} and Jayant Jain and Lai, {Bo Hong} and E-Wen Huang",

year = "2019",

month = aug,

doi = "10.3390/cryst9080420",

language = "English",

volume = "9",

journal = "Crystals",

issn = "2073-4352",

publisher = "Multidisciplinary Digital Publishing Institute (MDPI)",

number = "8",

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T1 - Comparing cyclic tension-compression effects on CoCrFeMnNi high-entropy alloy and Ni-based superalloy

AU - Lam, Tu Ngoc

AU - Chou, You Shiun

AU - Chang, Yao Jen

AU - Sui, Tsung Ruei

AU - Yeh, An Chou

AU - Harjo, Stefanus

AU - Lee, Soo Yeol

AU - Jain, Jayant

AU - Lai, Bo Hong

AU - Huang, E-Wen

PY - 2019/8

Y1 - 2019/8

N2 - An equal-molar CoCrFeMnNi, face-centered-cubic (fcc) high-entropy alloy (HEA) and a nickel-based superalloy are studied using in situ neutron diffraction experiments. With continuous measurements, the evolution of diffraction peaks is collected for microscopic lattice strain analyses. Cyclic hardening and softening are found in both metallic systems. However, as obtained from the diffraction-peak-width evolution, the underneath deformation mechanisms are quite different. The CoCrFeMnNi HEA exhibits distinct lattice strain and microstructure responses under tension-compression cyclic loadings.

AB - An equal-molar CoCrFeMnNi, face-centered-cubic (fcc) high-entropy alloy (HEA) and a nickel-based superalloy are studied using in situ neutron diffraction experiments. With continuous measurements, the evolution of diffraction peaks is collected for microscopic lattice strain analyses. Cyclic hardening and softening are found in both metallic systems. However, as obtained from the diffraction-peak-width evolution, the underneath deformation mechanisms are quite different. The CoCrFeMnNi HEA exhibits distinct lattice strain and microstructure responses under tension-compression cyclic loadings.

KW - in-situ neutron diffraction

KW - low-cycle fatigue

KW - high entropy alloy

KW - Ni-based superalloy

KW - CRACK GROWTH-BEHAVIOR

KW - FATIGUE BEHAVIOR

KW - NEUTRON-DIFFRACTION

KW - DEFORMATION

KW - TEMPERATURE

KW - DISLOCATION

KW - EVOLUTION

KW - STRESS

KW - METALS

UR - http://www.scopus.com/inward/record.url?scp=85071889634&partnerID=8YFLogxK

U2 - 10.3390/cryst9080420

DO - 10.3390/cryst9080420

M3 - Article

AN - SCOPUS:85071889634

VL - 9

JO - Crystals

JF - Crystals

SN - 2073-4352

IS - 8

M1 - 420

ER -

Comparing cyclic tension-compression effects on CoCrFeMnNi high-entropy alloy and Ni-based superalloy

Abstract

Keywords

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