Designing high entropy superalloys for elevated temperature application

Yung Ta Chen; Yao Jen Chang; Hideyuki Murakami; Stéphane Gorsse; An Chou Yeh

doi:10.1016/j.scriptamat.2020.06.002

Designing high entropy superalloys for elevated temperature application

Yung Ta Chen, Yao Jen Chang, Hideyuki Murakami, Stéphane Gorsse, An Chou Yeh^*

^*この研究の対応する著者

大学院先進理工学研究科

研究成果: Article › 査読

22 被引用数 (Scopus)

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In the context of cast alloy development for high temperature applications, high entropy superalloys (HESA) have exhibited superior cost specific tensile strength than that of superalloys such as CM247LC. Compositions of HESA are distinctively different from those of cast superalloys with higher contents of Fe and Ti, making HESA cheaper and lighter. Comparing to superalloys, although HESA has adopted the template of FCC-structured (γ) matrix and coherent L1₂-structured (γ′) precipitates, γ′ is enriched with solutes with higher intrinsic strength, rendering positive lattice misfit, and the high entropy γ matrix may have attributed to a good combination of strength and ductility.

本文言語	English
ページ（範囲）	177-182
ページ数	6
ジャーナル	Scripta Materialia
巻	187
DOI	https://doi.org/10.1016/j.scriptamat.2020.06.002
出版ステータス	Published - 2020 10月

ASJC Scopus subject areas

材料科学（全般）
凝縮系物理学
材料力学
機械工学
金属および合金

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10.1016/j.scriptamat.2020.06.002

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title = "Designing high entropy superalloys for elevated temperature application",

abstract = "In the context of cast alloy development for high temperature applications, high entropy superalloys (HESA) have exhibited superior cost specific tensile strength than that of superalloys such as CM247LC. Compositions of HESA are distinctively different from those of cast superalloys with higher contents of Fe and Ti, making HESA cheaper and lighter. Comparing to superalloys, although HESA has adopted the template of FCC-structured (γ) matrix and coherent L12-structured (γ′) precipitates, γ′ is enriched with solutes with higher intrinsic strength, rendering positive lattice misfit, and the high entropy γ matrix may have attributed to a good combination of strength and ductility.",

keywords = "Cost performance, High entropy superalloys, High temperature properties, Superalloys",

author = "Chen, {Yung Ta} and Chang, {Yao Jen} and Hideyuki Murakami and St{\'e}phane Gorsse and Yeh, {An Chou}",

note = "Funding Information: Authors would like to acknowledge funding supports from Ministry of Science and Technology (MOST) in Taiwan under Grant MOST108-2218-E-007-005 , MOST109-2634-F-007-024 , and MOST109-2811-E-007-500 ; the “High Entropy Materials Center” from The Featured Areas Research Center Program within the framework of the Higher Education Sprout Project by the Ministry of Education. Publisher Copyright: {\textcopyright} 2020",

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doi = "10.1016/j.scriptamat.2020.06.002",

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AU - Chen, Yung Ta

AU - Chang, Yao Jen

AU - Murakami, Hideyuki

AU - Gorsse, Stéphane

AU - Yeh, An Chou

N1 - Funding Information: Authors would like to acknowledge funding supports from Ministry of Science and Technology (MOST) in Taiwan under Grant MOST108-2218-E-007-005 , MOST109-2634-F-007-024 , and MOST109-2811-E-007-500 ; the “High Entropy Materials Center” from The Featured Areas Research Center Program within the framework of the Higher Education Sprout Project by the Ministry of Education. Publisher Copyright: © 2020

PY - 2020/10

Y1 - 2020/10

N2 - In the context of cast alloy development for high temperature applications, high entropy superalloys (HESA) have exhibited superior cost specific tensile strength than that of superalloys such as CM247LC. Compositions of HESA are distinctively different from those of cast superalloys with higher contents of Fe and Ti, making HESA cheaper and lighter. Comparing to superalloys, although HESA has adopted the template of FCC-structured (γ) matrix and coherent L12-structured (γ′) precipitates, γ′ is enriched with solutes with higher intrinsic strength, rendering positive lattice misfit, and the high entropy γ matrix may have attributed to a good combination of strength and ductility.

AB - In the context of cast alloy development for high temperature applications, high entropy superalloys (HESA) have exhibited superior cost specific tensile strength than that of superalloys such as CM247LC. Compositions of HESA are distinctively different from those of cast superalloys with higher contents of Fe and Ti, making HESA cheaper and lighter. Comparing to superalloys, although HESA has adopted the template of FCC-structured (γ) matrix and coherent L12-structured (γ′) precipitates, γ′ is enriched with solutes with higher intrinsic strength, rendering positive lattice misfit, and the high entropy γ matrix may have attributed to a good combination of strength and ductility.

KW - Cost performance

KW - High entropy superalloys

KW - High temperature properties

KW - Superalloys

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Designing high entropy superalloys for elevated temperature application

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