An isotropic zero thermal expansion alloy with super-high toughness

Chengyi Yu; Kun Lin; Qinghua Zhang; Huihui Zhu; Ke An; Yan Chen; Dunji Yu; Tianyi Li; Xiaoqian Fu; Qian Yu; Li You; Xiaojun Kuang; Yili Cao; Qiang Li; Jinxia Deng; Xianran Xing

doi:10.1038/s41467-024-46613-0

An isotropic zero thermal expansion alloy with super-high toughness

Chengyi Yu, Kun Lin, Qinghua Zhang, Huihui Zhu, Ke An, Yan Chen, Dunji Yu, Tianyi Li, Xiaoqian Fu, Qian Yu, Li You, Xiaojun Kuang, Yili Cao, Qiang Li, Jinxia Deng, Xianran Xing

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

4 Scopus citations

Abstract

Zero thermal expansion (ZTE) alloys with high mechanical response are crucial for their practical usage. Yet, unifying the ZTE behavior and mechanical response in one material is a grand obstacle, especially in multicomponent ZTE alloys. Herein, we report a near isotropic zero thermal expansion (α_l = 1.10 × 10⁻⁶K⁻¹, 260–310 K) in the natural heterogeneous LaFe₅₄Co_3.5Si_3.35 alloy, which exhibits a super-high toughness of 277.8 ± 14.7 J cm⁻³. Chemical partition, in the dual-phase structure, assumes the role of not only modulating thermal expansion through magnetic interaction but also enhancing mechanical properties via interface bonding. The comprehensive analysis reveals that the hierarchically synergistic enhancement among lattice, phase interface, and heterogeneous structure is significant for strong toughness. Our findings pave the way to tailor thermal expansion and obtain prominent mechanical properties in multicomponent alloys, which is essential to ultra-stable functional materials.

Original language	English
Article number	2252
Journal	Nature Communications
Volume	15
Issue number	1
DOIs	https://doi.org/10.1038/s41467-024-46613-0
State	Published - Dec 2024

Funding

This research was supported by National Key R&D Program of China (2020YFA0406202) (X.R.X.), National Natural Science Foundation of China (22090042 (X.R.X.) and 21971009 (K.L.)), Guangxi BaGui Scholars Special Funding, China Postdoctoral Science Foundation (2023M740210) (C.Y.Y.), and the Fundamental Research Funds for the Central Universities, China (FRF-IDRY-GD21-03, GJRC2023003, and FRF-EYIT-23-03) (K.L.). The synchrotron radiation experiments were performed in Advanced Photon Source (APS, λ = 0.1173 Å), USA; Neutron diffraction work was carried out at the Spallation Neutron Source (SNS) (Proposal No. 2022A30005.1), which is the U.S. Department of Energy (DOE) user facility at the Oak Ridge National Laboratory, sponsored by the Scientific User Facilities Division, Office of Basic Energy Sciences.

Funders	Funder number
Basic Energy Sciences
U.S. Department of Energy
Scientific User Facilities Division
Guangxi BaGui Scholars Special Funding, China Postdoctoral Science Foundation	2023M740210
National Natural Science Foundation of China	22090042, 21971009
Fundamental Research Funds for the Central Universities	FRF-EYIT-23-03, GJRC2023003, FRF-IDRY-GD21-03, 2022A30005.1
National Key Research and Development Program of China	2020YFA0406202

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10.1038/s41467-024-46613-0

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title = "An isotropic zero thermal expansion alloy with super-high toughness",

abstract = "Zero thermal expansion (ZTE) alloys with high mechanical response are crucial for their practical usage. Yet, unifying the ZTE behavior and mechanical response in one material is a grand obstacle, especially in multicomponent ZTE alloys. Herein, we report a near isotropic zero thermal expansion (αl = 1.10 × 10−6K−1, 260–310 K) in the natural heterogeneous LaFe54Co3.5Si3.35 alloy, which exhibits a super-high toughness of 277.8 ± 14.7 J cm−3. Chemical partition, in the dual-phase structure, assumes the role of not only modulating thermal expansion through magnetic interaction but also enhancing mechanical properties via interface bonding. The comprehensive analysis reveals that the hierarchically synergistic enhancement among lattice, phase interface, and heterogeneous structure is significant for strong toughness. Our findings pave the way to tailor thermal expansion and obtain prominent mechanical properties in multicomponent alloys, which is essential to ultra-stable functional materials.",

author = "Chengyi Yu and Kun Lin and Qinghua Zhang and Huihui Zhu and Ke An and Yan Chen and Dunji Yu and Tianyi Li and Xiaoqian Fu and Qian Yu and Li You and Xiaojun Kuang and Yili Cao and Qiang Li and Jinxia Deng and Xianran Xing",

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AU - Yu, Chengyi

AU - Lin, Kun

AU - Zhang, Qinghua

AU - Zhu, Huihui

AU - An, Ke

AU - Chen, Yan

AU - Yu, Dunji

AU - Li, Tianyi

AU - Fu, Xiaoqian

AU - Yu, Qian

AU - You, Li

AU - Kuang, Xiaojun

AU - Cao, Yili

AU - Li, Qiang

AU - Deng, Jinxia

AU - Xing, Xianran

PY - 2024/12

Y1 - 2024/12

N2 - Zero thermal expansion (ZTE) alloys with high mechanical response are crucial for their practical usage. Yet, unifying the ZTE behavior and mechanical response in one material is a grand obstacle, especially in multicomponent ZTE alloys. Herein, we report a near isotropic zero thermal expansion (αl = 1.10 × 10−6K−1, 260–310 K) in the natural heterogeneous LaFe54Co3.5Si3.35 alloy, which exhibits a super-high toughness of 277.8 ± 14.7 J cm−3. Chemical partition, in the dual-phase structure, assumes the role of not only modulating thermal expansion through magnetic interaction but also enhancing mechanical properties via interface bonding. The comprehensive analysis reveals that the hierarchically synergistic enhancement among lattice, phase interface, and heterogeneous structure is significant for strong toughness. Our findings pave the way to tailor thermal expansion and obtain prominent mechanical properties in multicomponent alloys, which is essential to ultra-stable functional materials.

AB - Zero thermal expansion (ZTE) alloys with high mechanical response are crucial for their practical usage. Yet, unifying the ZTE behavior and mechanical response in one material is a grand obstacle, especially in multicomponent ZTE alloys. Herein, we report a near isotropic zero thermal expansion (αl = 1.10 × 10−6K−1, 260–310 K) in the natural heterogeneous LaFe54Co3.5Si3.35 alloy, which exhibits a super-high toughness of 277.8 ± 14.7 J cm−3. Chemical partition, in the dual-phase structure, assumes the role of not only modulating thermal expansion through magnetic interaction but also enhancing mechanical properties via interface bonding. The comprehensive analysis reveals that the hierarchically synergistic enhancement among lattice, phase interface, and heterogeneous structure is significant for strong toughness. Our findings pave the way to tailor thermal expansion and obtain prominent mechanical properties in multicomponent alloys, which is essential to ultra-stable functional materials.

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An isotropic zero thermal expansion alloy with super-high toughness

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