A novel lightweight refractory high-entropy alloy

Wentao Jiang; Tiantian Wang; Xiaohong Wang; Bo Jiang; Ye Wang; Xin Wang; Hongyu Xu; Maoliang Hu; Dongdong Zhu

Journal of Materials Research and Technology (Nov 2024)

A novel lightweight refractory high-entropy alloy

Wentao Jiang,
Tiantian Wang,
Xiaohong Wang,
Bo Jiang,
Ye Wang,
Xin Wang,
Hongyu Xu,
Maoliang Hu,
Dongdong Zhu

Affiliations

Wentao Jiang: School of Materials Science and Chemical Engineering, Harbin University of Science and Technology, Harbin, 150040, China
Tiantian Wang: School of Materials Science and Chemical Engineering, Harbin University of Science and Technology, Harbin, 150040, China
Xiaohong Wang: Key Laboratory of Air-Driven Equipment Technology of Zhejiang Province, Quzhou University, Quzhou, 324000, China
Bo Jiang: School of Materials Science and Chemical Engineering, Harbin University of Science and Technology, Harbin, 150040, China
Ye Wang: School of Materials Science and Chemical Engineering, Harbin University of Science and Technology, Harbin, 150040, China; Corresponding author.
Xin Wang: School of Materials Science and Chemical Engineering, Harbin University of Science and Technology, Harbin, 150040, China
Hongyu Xu: School of Materials Science and Chemical Engineering, Harbin University of Science and Technology, Harbin, 150040, China
Maoliang Hu: School of Materials Science and Chemical Engineering, Harbin University of Science and Technology, Harbin, 150040, China
Dongdong Zhu: School of Materials Science and Engineering, Taizhou University, Taizhou, 318000, China; Corresponding author.

Journal volume & issue: Vol. 33
pp. 9062 – 9066

Abstract

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A novel equiatomic refractory AlNbTiVY high-entropy alloy containing rare earth elements was fabricated by vacuum arc melting. AlNbTiVY alloy possesses a dual-phase structure, consisting of a B2 ordered matrix and an Orthorhombic structured Y2Al second phase. The alloy has a dendritic microstructure with a density of only 5.18 g/cm3. As the testing temperature increases, the compressive yield strength of the alloy gradually decreases from 1104 MPa at room temperature to 321 MPa at 800 °C, with improved deformability and no fracture occurring in the 800 °C environment. Based on the insights of physics, a simple calculation was conducted on the temperature-dependent model of the alloy, and the theoretical application temperature of the alloy was predicted to exceed 600 °C.

Published in Journal of Materials Research and Technology

ISSN: 2238-7854 (Print); 2214-0697 (Online)
Publisher: Elsevier
Country of publisher: Netherlands
LCC subjects: Technology: Mining engineering. Metallurgy
Website: https://www.journals.elsevier.com/journal-of-materials-research-and-technology/

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