Strengthening mechanisms and high-temperature oxidation properties of laser-clad TaNbZrTi refractory high entropy alloy coatings

Zhou, Jia-li; Cheng, Yan-hai; Chen, Hao; Ma, Kun; Wan, Yi-xing; Yang, Jin-yong

doi:10.1007/s10853-023-09049-3

J Mater Sci

2023

DOI: 10.1007/s10853-023-09049-3

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Strengthening mechanisms and high-temperature oxidation properties of laser-clad TaNbZrTi refractory high entropy alloy coatings

Jia-li Zhou,

Yan-hai Cheng,

Hao Chen

et al.

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2024

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Accelerated Discovery of (TiZrHf)_x(NbTa)₁₋_x High‐Entropy Alloys With Superior Thermal Stability and a New Crystallization Mechanism

Cheng,

Feng,

Lyu

et al. 2024

Advanced Materials

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Nanocrystalline (nc) metals are generally strong yet thermally unstable, rendering them difficult to process and unsuitable for use, particularly at elevated temperatures. Nc multicomponent and high‐entropy alloys (HEAs) are found to offer enhanced thermal stability, but only in a few empirically discovered systems out of a vast compositional space. In response, this work develops a combinatorial strategy to accelerate the discovery of nc‐(TiZrHf)x(NbTa)1‐x alloy library with distinct thermal stability, in terms of phases and grain sizes. Based on synchrotron X‐ray diffraction and electron microscopy characterizations, a phase transition was observed from amorphous‐crystalline nanocomposites to a body‐centered cubic (bcc) phase upon annealing. With increased NbTa content (decreased x value), the system tends to achieve thermally stable dual bcc phases upon annealing; in contrast, alloys with increased TiZrHf content (x > 0.6) maintain a single‐composition nanocomposite state, impeding crystallization and grain growth. This investigation not only broadens our understanding of thermal behavior but also delves into the onset of crystallization in HEA systems.This article is protected by copyright. All rights reserved

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Accelerated Discovery of (TiZrHf)_x(NbTa)₁₋_x High‐Entropy Alloys With Superior Thermal Stability and a New Crystallization Mechanism

Cheng,

Feng,

Lyu

et al. 2024

Advanced Materials

View full text Add to dashboard Cite

show abstract

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Strengthening mechanisms and high-temperature oxidation properties of laser-clad TaNbZrTi refractory high entropy alloy coatings

Cited by 1 publication

References 39 publications

Accelerated Discovery of (TiZrHf)_x(NbTa)₁₋_x High‐Entropy Alloys With Superior Thermal Stability and a New Crystallization Mechanism

Accelerated Discovery of (TiZrHf)_x(NbTa)₁₋_x High‐Entropy Alloys With Superior Thermal Stability and a New Crystallization Mechanism

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Strengthening mechanisms and high-temperature oxidation properties of laser-clad TaNbZrTi refractory high entropy alloy coatings

Cited by 1 publication

References 39 publications

Accelerated Discovery of (TiZrHf)x(NbTa)1−x High‐Entropy Alloys With Superior Thermal Stability and a New Crystallization Mechanism

Accelerated Discovery of (TiZrHf)x(NbTa)1−x High‐Entropy Alloys With Superior Thermal Stability and a New Crystallization Mechanism

Contact Info

Product

Resources

About

Accelerated Discovery of (TiZrHf)_x(NbTa)₁₋_x High‐Entropy Alloys With Superior Thermal Stability and a New Crystallization Mechanism

Accelerated Discovery of (TiZrHf)_x(NbTa)₁₋_x High‐Entropy Alloys With Superior Thermal Stability and a New Crystallization Mechanism