Development of oxidation-resistant L12-strengthened medium to high entropy alloys for additive manufacturing

J.-L. Lee; C.-C. Tsai; P.-H. Chou; A.-C. Yeh; H. Murakami

doi:10.1016/j.jallcom.2024.177596

期刊文章

Development of oxidation-resistant L12-strengthened medium to high entropy alloys for additive manufacturing

J.-L. Lee, C.-C. Tsai, P.-H. Chou, A.-C. Yeh 和 H. Murakami

Journal of Alloys and Compounds, 卷.1010

2025

DOI: https://doi.org/10.1016/j.jallcom.2024.177596

Web of Science ID: WOS:001360207800001

摘要

Additive manufacturing

High-entropy alloys

L1<sub>2</sub>-strengthened alloys

Oxidation kinetics

Cyclic oxidation tests

High entropy alloys

Isothermal oxidations

L12-strengthened alloy

Medium entropy

Microstructural analysis

Oxidation kinetics

Oxidation resistant

Oxidation tests

Weight change

High-entropy alloys

This study investigates the oxidation kinetics of a newly designed L12-strengthened medium entropy alloy (MEA) and high entropy alloy (HEA) produced by additive manufacturing and compares them with commercially available IN718 and MAR-M247 alloys. Isothermal oxidation tests at 900 °C to 1100 °C, a cyclic oxidation test at 1100 °C, and subsequent microstructural analysis revealed that the designed MEA and HEA exhibited excellent oxidation resistance with much lower weight changes than IN718 without any crack-induced oxides as observed in MAR-M247. The superior oxidation resistance of the designed alloys is attributed to the preparations of crack-free samples that form a protective and uniform α-Al2O3 layer. In the present work, the design for alumina-forming L12-strengthened HEAs with an optimal combination of oxidation resistance and 3D printability is also discussed. © 2024 Elsevier B.V.

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題名: Development of oxidation-resistant L12-strengthened medium to high entropy alloys for additive manufacturing
創作者：: J.-L. Lee - National Tsing Hua University
C.-C. Tsai - National Tsing Hua University
P.-H. Chou - National Tsing Hua University
A.-C. Yeh - National Tsing Hua University
H. Murakami - National Institute for Materials Science
出版者: Elsevier Ltd; LAUSANNE
總頁數: 14
補助款備註: 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 (MOE) in Taiwan Na-tional Science and Technology Council (NSTC) in Taiwan: NSTC 112-2927-I-007-504 NSTC: 113-2221-E-007-035
This work was financially supported by 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 (MOE) in Taiwan. This work was also supported by the Na-tional Science and Technology Council (NSTC) in Taiwan under Grant NSTC 112-2927-I-007-504, NSTC 110-2221-E-007-020-MY3, NSTC 112-2224-E-007-003, NSTC 113-2221-E-007-035. The authors would like to thank Drs. Takanobu Hiroto and Akira Ishida, both NIMS, for their academic support, and Jhuo-Lun Lee would like to thank NIMS for the provision of the international collaborative graduate program (ICGP) scholarship.
學術資源類型: 期刊文章
出版日期: 2025
出版資訊: Journal of Alloys and Compounds, 卷.1010
語言: 英語

Development of oxidation-resistant L12-strengthened medium to high entropy alloys for additive manufacturing

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