Composition evolution of gamma prime nanoparticles in the Ti-doped CoFeCrNi high entropy alloy

Bin Han; Jie Wei; Yang Tong; Da Chen; Yilu Zhao; Jing Wang; Feng He; Tao Yang; Can Zhao; Yasuo Shimizu; Koji Inoue; Yasuyoshi Nagai; Alice Hu; Chain Tsuan Liu; Ji Jung Kai

doi:10.1016/j.scriptamat.2018.01.025

Composition evolution of gamma prime nanoparticles in the Ti-doped CoFeCrNi high entropy alloy

Bin Han, Jie Wei, Yang Tong, Da Chen, Yilu Zhao, Jing Wang, Feng He, Tao Yang, Can Zhao, Yasuo Shimizu, Koji Inoue, Yasuyoshi Nagai, Alice Hu, Chain Tsuan Liu, Ji Jung Kai

School of Materials Sience and Engineering

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

61 Scopus citations

Abstract

The composition evolution of γ′ nanoparticles as a function of aging duration in the Ti-doped CoFeCrNi high entropy alloy was studied by atom probe tomography (APT) and first-principle calculations. The APT results indicate that the evolution behaviors of Co, Fe, and Cr in the Ni₃Ti-type γ′ nanoparticles are significantly different. Co saturates to a stable concentration in the γ′ nanoparticles rapidly in the initial stage of the precipitation, whereas Fe and Cr atoms are incorporated into the γ′ nanoparticles during the coarsening. The APT results are supported by the first-principle calculations from the perspective of the electronic state.

Original language	English
Pages (from-to)	42-46
Number of pages	5
Journal	Scripta Materialia
Volume	148
DOIs	https://doi.org/10.1016/j.scriptamat.2018.01.025
State	Published - 15 Apr 2018

Keywords

Atom probe tomography
First-principle calculation
High entropy alloy
Precipitation

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10.1016/j.scriptamat.2018.01.025

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title = "Composition evolution of gamma prime nanoparticles in the Ti-doped CoFeCrNi high entropy alloy",

abstract = "The composition evolution of γ′ nanoparticles as a function of aging duration in the Ti-doped CoFeCrNi high entropy alloy was studied by atom probe tomography (APT) and first-principle calculations. The APT results indicate that the evolution behaviors of Co, Fe, and Cr in the Ni3Ti-type γ′ nanoparticles are significantly different. Co saturates to a stable concentration in the γ′ nanoparticles rapidly in the initial stage of the precipitation, whereas Fe and Cr atoms are incorporated into the γ′ nanoparticles during the coarsening. The APT results are supported by the first-principle calculations from the perspective of the electronic state.",

keywords = "Atom probe tomography, First-principle calculation, High entropy alloy, Precipitation",

author = "Bin Han and Jie Wei and Yang Tong and Da Chen and Yilu Zhao and Jing Wang and Feng He and Tao Yang and Can Zhao and Yasuo Shimizu and Koji Inoue and Yasuyoshi Nagai and Alice Hu and Liu, {Chain Tsuan} and Kai, {Ji Jung}",

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day = "15",

doi = "10.1016/j.scriptamat.2018.01.025",

language = "英语",

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TY - JOUR

T1 - Composition evolution of gamma prime nanoparticles in the Ti-doped CoFeCrNi high entropy alloy

AU - Han, Bin

AU - Wei, Jie

AU - Tong, Yang

AU - Chen, Da

AU - Zhao, Yilu

AU - Wang, Jing

AU - He, Feng

AU - Yang, Tao

AU - Zhao, Can

AU - Shimizu, Yasuo

AU - Inoue, Koji

AU - Nagai, Yasuyoshi

AU - Hu, Alice

AU - Liu, Chain Tsuan

AU - Kai, Ji Jung

PY - 2018/4/15

Y1 - 2018/4/15

N2 - The composition evolution of γ′ nanoparticles as a function of aging duration in the Ti-doped CoFeCrNi high entropy alloy was studied by atom probe tomography (APT) and first-principle calculations. The APT results indicate that the evolution behaviors of Co, Fe, and Cr in the Ni3Ti-type γ′ nanoparticles are significantly different. Co saturates to a stable concentration in the γ′ nanoparticles rapidly in the initial stage of the precipitation, whereas Fe and Cr atoms are incorporated into the γ′ nanoparticles during the coarsening. The APT results are supported by the first-principle calculations from the perspective of the electronic state.

AB - The composition evolution of γ′ nanoparticles as a function of aging duration in the Ti-doped CoFeCrNi high entropy alloy was studied by atom probe tomography (APT) and first-principle calculations. The APT results indicate that the evolution behaviors of Co, Fe, and Cr in the Ni3Ti-type γ′ nanoparticles are significantly different. Co saturates to a stable concentration in the γ′ nanoparticles rapidly in the initial stage of the precipitation, whereas Fe and Cr atoms are incorporated into the γ′ nanoparticles during the coarsening. The APT results are supported by the first-principle calculations from the perspective of the electronic state.

KW - Atom probe tomography

KW - First-principle calculation

KW - High entropy alloy

KW - Precipitation

UR - http://www.scopus.com/inward/record.url?scp=85041392181&partnerID=8YFLogxK

U2 - 10.1016/j.scriptamat.2018.01.025

DO - 10.1016/j.scriptamat.2018.01.025

M3 - 文章

AN - SCOPUS:85041392181

SN - 1359-6462

VL - 148

SP - 42

EP - 46

JO - Scripta Materialia

JF - Scripta Materialia

ER -

Composition evolution of gamma prime nanoparticles in the Ti-doped CoFeCrNi high entropy alloy

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Keywords

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