Thermal Stability and Strengthening Effect of Coherent Precipitates in a (FeCoNi)92Al2.5Ti5.5 High Entropy Alloy

Yuqi Liu; Feng Wang; Songyang Chen; Hui Wang; Zhiping Xiong; Khurram Yaqoob; Zhangwei Wang; Min Song

doi:10.1007/s40195-024-01727-8

Thermal Stability and Strengthening Effect of Coherent Precipitates in a (FeCoNi)₉₂Al_2.5Ti_5.5 High Entropy Alloy

Yuqi Liu, Feng Wang, Songyang Chen, Hui Wang^*, Zhiping Xiong^*, Khurram Yaqoob, Zhangwei Wang^*, Min Song

^*Corresponding author for this work

School of Material Science and Engineering

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

1 Citation (Scopus)

Abstract

The coarsening behavior and strengthening effect of L1₂-Ni₃(Ti,Al) precipitates in a face-centered-cubic (FCC) (FeCoNi)₉₂Al_2.5Ti_5.5 high entropy alloy have been systematically investigated. The coherent L1₂ precipitates, uniformly distributed throughout the FCC matrix, consistently retain a spherical shape. The coarsening rate coefficient of precipitate is determined by employing the Philippe-Voorhees (PV) model, suggesting excellent thermal stability. Furthermore, the elemental partitioning and compositional evolution of the L1₂ precipitates is analyzed by atom probe tomography, which identify aluminum (Al) as the slowest diffusion species during the coarsening process. In addition, the precipitation strengthening effect is quantified to ascertain the optimal size of the precipitates. Our study enhances the understanding of precipitate coarsening in high entropy alloys, presenting valuable insights into their thermal stability and mechanical properties.

Original language	English
Pages (from-to)	1491-1500
Number of pages	10
Journal	Acta Metallurgica Sinica (English Letters)
Volume	37
Issue number	9
DOIs	https://doi.org/10.1007/s40195-024-01727-8
Publication status	Published - Sept 2024

Keywords

Coarsening kinetics
High entropy alloy
L1 precipitates
Precipitation hardening

Access to Document

10.1007/s40195-024-01727-8

Cite this

@article{109c77d3b9ba4b37955021f2cbfb4572,

title = "Thermal Stability and Strengthening Effect of Coherent Precipitates in a (FeCoNi)92Al2.5Ti5.5 High Entropy Alloy",

abstract = "The coarsening behavior and strengthening effect of L12-Ni3(Ti,Al) precipitates in a face-centered-cubic (FCC) (FeCoNi)92Al2.5Ti5.5 high entropy alloy have been systematically investigated. The coherent L12 precipitates, uniformly distributed throughout the FCC matrix, consistently retain a spherical shape. The coarsening rate coefficient of precipitate is determined by employing the Philippe-Voorhees (PV) model, suggesting excellent thermal stability. Furthermore, the elemental partitioning and compositional evolution of the L12 precipitates is analyzed by atom probe tomography, which identify aluminum (Al) as the slowest diffusion species during the coarsening process. In addition, the precipitation strengthening effect is quantified to ascertain the optimal size of the precipitates. Our study enhances the understanding of precipitate coarsening in high entropy alloys, presenting valuable insights into their thermal stability and mechanical properties.",

keywords = "Coarsening kinetics, High entropy alloy, L1 precipitates, Precipitation hardening",

author = "Yuqi Liu and Feng Wang and Songyang Chen and Hui Wang and Zhiping Xiong and Khurram Yaqoob and Zhangwei Wang and Min Song",

note = "Publisher Copyright: {\textcopyright} The Chinese Society for Metals (CSM) and Springer-Verlag GmbH Germany, part of Springer Nature 2024.",

year = "2024",

month = sep,

doi = "10.1007/s40195-024-01727-8",

language = "English",

volume = "37",

pages = "1491--1500",

journal = "Acta Metallurgica Sinica (English Letters)",

issn = "1006-7191",

publisher = "Springer International Publishing AG",

number = "9",

}

TY - JOUR

T1 - Thermal Stability and Strengthening Effect of Coherent Precipitates in a (FeCoNi)92Al2.5Ti5.5 High Entropy Alloy

AU - Liu, Yuqi

AU - Wang, Feng

AU - Chen, Songyang

AU - Wang, Hui

AU - Xiong, Zhiping

AU - Yaqoob, Khurram

AU - Wang, Zhangwei

AU - Song, Min

N1 - Publisher Copyright: © The Chinese Society for Metals (CSM) and Springer-Verlag GmbH Germany, part of Springer Nature 2024.

PY - 2024/9

Y1 - 2024/9

N2 - The coarsening behavior and strengthening effect of L12-Ni3(Ti,Al) precipitates in a face-centered-cubic (FCC) (FeCoNi)92Al2.5Ti5.5 high entropy alloy have been systematically investigated. The coherent L12 precipitates, uniformly distributed throughout the FCC matrix, consistently retain a spherical shape. The coarsening rate coefficient of precipitate is determined by employing the Philippe-Voorhees (PV) model, suggesting excellent thermal stability. Furthermore, the elemental partitioning and compositional evolution of the L12 precipitates is analyzed by atom probe tomography, which identify aluminum (Al) as the slowest diffusion species during the coarsening process. In addition, the precipitation strengthening effect is quantified to ascertain the optimal size of the precipitates. Our study enhances the understanding of precipitate coarsening in high entropy alloys, presenting valuable insights into their thermal stability and mechanical properties.

AB - The coarsening behavior and strengthening effect of L12-Ni3(Ti,Al) precipitates in a face-centered-cubic (FCC) (FeCoNi)92Al2.5Ti5.5 high entropy alloy have been systematically investigated. The coherent L12 precipitates, uniformly distributed throughout the FCC matrix, consistently retain a spherical shape. The coarsening rate coefficient of precipitate is determined by employing the Philippe-Voorhees (PV) model, suggesting excellent thermal stability. Furthermore, the elemental partitioning and compositional evolution of the L12 precipitates is analyzed by atom probe tomography, which identify aluminum (Al) as the slowest diffusion species during the coarsening process. In addition, the precipitation strengthening effect is quantified to ascertain the optimal size of the precipitates. Our study enhances the understanding of precipitate coarsening in high entropy alloys, presenting valuable insights into their thermal stability and mechanical properties.

KW - Coarsening kinetics

KW - High entropy alloy

KW - L1 precipitates

KW - Precipitation hardening

UR - http://www.scopus.com/inward/record.url?scp=85196792965&partnerID=8YFLogxK

U2 - 10.1007/s40195-024-01727-8

DO - 10.1007/s40195-024-01727-8

M3 - Article

AN - SCOPUS:85196792965

SN - 1006-7191

VL - 37

SP - 1491

EP - 1500

JO - Acta Metallurgica Sinica (English Letters)

JF - Acta Metallurgica Sinica (English Letters)

IS - 9

ER -

Thermal Stability and Strengthening Effect of Coherent Precipitates in a (FeCoNi)₉₂Al_2.5Ti_5.5 High Entropy Alloy

Abstract

Keywords

Access to Document

Other files and links

Fingerprint

Cite this