Highly pressurized helium nanobubbles promote stacking-fault-mediated deformation in FeNiCoCr high-entropy alloy

Lin, Weitong; Chen, Da; Dang, Chaoqun; Yu, Peijun; Wang, G.; Lin, Junhao; Meng, Fanling; Yang, Tao; Zhao, Yilu; Liu, Shaofei; Du, Jun‐Ping; Yeli, Guma; Liu, C.T.; Lu, Yang; Ogata, Shigenobu; Kai, Ji‐Jung

doi:10.1016/j.actamat.2021.116843

Cited by 27 publications

(4 citation statements)

References 72 publications

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“…The sample geometry for nanoindentation-based in situ TEM experiments mainly includes nanowire, nanoparticle, nanopillar, , and nanosized thin film materials . In addition, customized punch tips (e.g., tensile gripper, as shown in Figure b) and sample geometries , (e.g., push-to-pull geometry, as shown in Figure c) can be prepared by FIB fabrication and integrated with the nanoindentation platform to perform tensile tests. Different types of MEMS chips actuated by nanoindentation tips also provide many more possibilities for the in situ nanomechanics TEM lab, such as push-to-pull (PTP) devices , and electrical PTP, as shown in Figure d–f. , The PTP device contains a fixed part and a movable part.…”

Section: In Situ Characterization and Modulation Of Phase Transformationmentioning

confidence: 99%

In Situ TEM Characterization and Modulation for Phase Engineering of Nanomaterials

Han,

Wang,

Cao

et al. 2023

Chem. Rev.

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Section: In Situ Characterization and Modulation Of Phase Transformationmentioning

confidence: 99%

In Situ TEM Characterization and Modulation for Phase Engineering of Nanomaterials

Han,

Wang,

Cao

et al. 2023

Chem. Rev.

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“…Indeed, some excellent examples can be found for achieving fabulous balanced mechanical properties through utilizing TRIP (transformation-induced plasticity) and TWIP (twinning-induced plasticity) effects by tuning SF energy, 148,149) through tuning heterogeneous (bimodal) microstructures 150,151) and through utilizing secondary/tertiary-phase precipitates. 152,153) These studies have indicated that some high-entropy alloys may find a wide range of structural applications, for example, in bio, 112114,123) shape-memory 91,135) and nuclear 136,137,145,147) technologies in the future.…”

Section: (B))mentioning

confidence: 99%

Recent Progress in Our Understanding of Phase Stability, Atomic Structures and Mechanical and Functional Properties of High-Entropy Alloys

2022

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This paper reviews a current trend and recent progress in research on phase stability, atomic structures, mechanical and functional properties of high-entropy alloys. The survey is carried out based partly on the special issue published in April, 2020, in Materials Transactions (Vol. 61, No. 4). Research on high-entropy alloys has spread worldwide since the year of 2004, as many of them exhibit attractive properties for structural and functional applications, which have never been achieved in conventional alloys. Significant progress has been made in recent years in our understanding of high-entropy alloys in terms of processing, characterization, modeling and simulation, and so on. Some of them are briefly described in this paper.

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“…Compared to conventional alloys with one principle element, the underlying principle of multicomponent HEAs is endowed with an abundant constituents combination, that is, thousands of alloys will be synthesized by changing the type and content of elements, and the crystal structure, microstructure, and mechanical properties will undergo significant changes [5][6][7]. However, due to the lack of theoretical predictions and simulations of HEAs, the current research mainly focuses on the microstructure and physical properties of equiatomic or near-equiatomic HEAs [8][9][10], and improving performances of these HEAs is quite limited. Due to the limited regulating composition range to optimize the alloy microstructures, the competitive advantages of the multicomponent have not yet been fully exploited.…”

Section: Introductionmentioning

confidence: 99%

Microstructure and Properties of Non-Equiatomic Ni10Cr6WFe9TiAlx High-Entropy Alloys Combined with High Strength and Toughness

Yang

He²,

Li³

et al. 2023

Metals

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High-entropy alloys (HEAs) with excellent mechanical properties have broad application scope and application prospects. However, it is difficult to obtain the optimized element composition, based on the traditional equiatomic or near-equiatomic statistical analysis of the phase selection rules. The non-equiatomic HEAs have abundant constituents combination by optimizing the type and content of elements. In this study, Ni10Cr6WFe9TiAlx (x = 0, 1.0 and 1.5, at.%) HEAs were prepared by vacuum arc melting. The effect of Al content x on microstructure and mechanical properties of HEAs was systematically studied. The results show that the HEAs are composed mainly of face-centered cubic (FCC) with hexagonal Al2W phase. The increase of Al content promotes the formation of the hexagonal Al2W phase. When the Al mole content is 1.0, the Ni10Cr6WFe9TiAl HEA material has achieved superior mechanical properties. The alloy exhibited a high ultimate tensile strength of 741 MPa and a large total elongation of 46%. The improvement in the mechanical properties of the Ni10Cr6WFe9TiAl HEA is mainly attributed to the precipitation strengthening of the high-density Al2W phase. This work provides a reference for the future design of Al2W precipitation-strengthened non-equiatomic HEAs with ideal properties.

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Highly pressurized helium nanobubbles promote stacking-fault-mediated deformation in FeNiCoCr high-entropy alloy

Cited by 27 publications

References 72 publications

In Situ TEM Characterization and Modulation for Phase Engineering of Nanomaterials

In Situ TEM Characterization and Modulation for Phase Engineering of Nanomaterials

Recent Progress in Our Understanding of Phase Stability, Atomic Structures and Mechanical and Functional Properties of High-Entropy Alloys

Microstructure and Properties of Non-Equiatomic Ni10Cr6WFe9TiAlx High-Entropy Alloys Combined with High Strength and Toughness

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