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学者姓名：索红莉
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Abstract ：
As the composition elements in multi-principal element alloys increase, it can bring excellent mechanical properties. However, the strengthening mechanism of the additional element is still unclear. In this work, we establish a method based on the in-situ EBSD technology to explore the possible effect of additional elements on the intrinsic strength of tensile properties. We prepared four different multi-principal element alloys, including FeCoNi, FeCoNiMn, FeCoNiCr, and FeCoNiCrMn with similar initial status. We systematically investigated the evolution of the microstructure, dislocation density, twin boundary, grain size, and element distribution during the tensile process by in-situ EBSD and EDS. By carefully analyzing the results of four different multi-principal element alloys, the strength effects of the solid-solution hardening, grain-boundary hardening, twin boundary hardening, precipitate hardening, and dislocation hardening were peeled. The effect of the Cr and Mn element addition on the intrinsic strength can be explored. It is found that the element addition indeed increases the intrinsic strength from quaternary to quinary but not very clear from ternary to quaternary no matter Cr or Mn, which indicated that the intrinsic strength was more related to the number of elements in the alloy than to which element was present. This can be explained using the mixing entropy theory, which states that the intrinsic strength is enhanced when the mixing entropy is over a threshold between the MEA and HEA. This paper presents a method to study the individual factors affecting the tensile properties, which can help other researchers to better investigate HEA.
Keyword ：
Twin boundary Twin boundary Intrinsic strength Intrinsic strength Dislocation density Dislocation density In-situ EBSD tensile test In-situ EBSD tensile test Multi-principal alloy Multi-principal alloy Grain size Grain size
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| GB/T 7714 | Wang, Xufeng , Suo, Hongli , Zhang, Zili et al. Exploring the effect of Cr and Mn on the intrinsic strength of the tensile properties of FeCoNi, FeCoNiMn, FeCoNiCr, and FeCoNiCrMn multi-principal element alloys using in-situ EBSD [J]. | MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING , 2024 , 918 . |
| MLA | Wang, Xufeng et al. "Exploring the effect of Cr and Mn on the intrinsic strength of the tensile properties of FeCoNi, FeCoNiMn, FeCoNiCr, and FeCoNiCrMn multi-principal element alloys using in-situ EBSD" . | MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING 918 (2024) . |
| APA | Wang, Xufeng , Suo, Hongli , Zhang, Zili , Huangfu, Shangxiong , Wang, Qiuliang . Exploring the effect of Cr and Mn on the intrinsic strength of the tensile properties of FeCoNi, FeCoNiMn, FeCoNiCr, and FeCoNiCrMn multi-principal element alloys using in-situ EBSD . | MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING , 2024 , 918 . |
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Abstract ：
In this paper, the texture evolution of the Ni-5%W alloy baseband with different strain variables (epsilon(vM) = 3.9, 4.9, and 5.1) during rolling and annealing was studied using the electron back scattering diffraction (EBSD) technique. The results indicate that after high-temperature annealing at 1150 degrees C, all three strain levels of the alloy substrates can achieve a strong cubic texture, with a content exceeding 99% (<10 degrees). However, the texture evolution trajectory is significantly influenced by the strain level. When the content of cubic texture in the alloy substrates under strain levels of 3.9 and 5.1 is the same, significant temperature differences exist. Additionally, the different strain levels result in varying nucleation rates and growth rates of cubic texture in the Ni-5%W alloy substrates. The study reveals that in the alloy substrates under strain levels of 3.9 and 4.9, recrystallized cubic grain nuclei grow within a layered structure, resulting in larger grain sizes and lower nucleation rates. In contrast, in the alloy substrates under a strain level of 5.1, recrystallized cubic grain nuclei form from small equiaxed grains, leading to higher nucleation rates but smaller grain sizes, competing with random orientations. In the later stages of nucleation, recrystallized grains in the alloy substrates under a strain level of 5.1 exhibit a significant size advantage, rapidly growing by engulfing randomly oriented grains. Compared to the alloy substrates with lower strain levels, the recrystallized cubic grains in the alloy substrates under a strain level of 5.1 have higher nucleation rates and faster growth rates.
Keyword ：
annealing annealing electron backscatter diffraction electron backscatter diffraction texture texture functional alloys functional alloys nucleation and growth nucleation and growth
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| GB/T 7714 | Wang, Xufeng , Suo, Hongli , Ji, Yaotang et al. Analysis of the Ni-5%at.W Alloy Substrate Texture Evolution at Different Strain Levels Using the EBSD Technique [J]. | MATERIALS , 2024 , 17 (21) . |
| MLA | Wang, Xufeng et al. "Analysis of the Ni-5%at.W Alloy Substrate Texture Evolution at Different Strain Levels Using the EBSD Technique" . | MATERIALS 17 . 21 (2024) . |
| APA | Wang, Xufeng , Suo, Hongli , Ji, Yaotang , Zhang, Zili , Wang, Lanjin , Wang, Lei et al. Analysis of the Ni-5%at.W Alloy Substrate Texture Evolution at Different Strain Levels Using the EBSD Technique . | MATERIALS , 2024 , 17 (21) . |
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Abstract ：
In order to obtain the sharp cube texture, a new process, the intermediate annealing rolling technique, has been introduced to prepare the Ni7W substrate. In this paper, a cubic texture content up to 98.5% within 10 degrees of the standard cubic orientation is obtained in the final substrate and the influence of this improved rolling technique on the cube texture formation has been discussed. The results show that the increased cube texture in the Ni7W substrate is caused by the optimized deformation texture and the increased nucleated fraction of the cube grains.
Keyword ：
recrystallization recrystallization coated conductor coated conductor deformation texture deformation texture cube texture cube texture
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| GB/T 7714 | Zhao, Congcong , Suo, Hongli , Ji, Yaotang et al. The Mechanism of Cube Texture Formation in Ni-7 at%W Substrate [J]. | JOURNAL OF WUHAN UNIVERSITY OF TECHNOLOGY-MATERIALS SCIENCE EDITION , 2024 , 39 (5) : 1260-1269 . |
| MLA | Zhao, Congcong et al. "The Mechanism of Cube Texture Formation in Ni-7 at%W Substrate" . | JOURNAL OF WUHAN UNIVERSITY OF TECHNOLOGY-MATERIALS SCIENCE EDITION 39 . 5 (2024) : 1260-1269 . |
| APA | Zhao, Congcong , Suo, Hongli , Ji, Yaotang , Gao, Mangmang , Ma, Lin , Liu, Min . The Mechanism of Cube Texture Formation in Ni-7 at%W Substrate . | JOURNAL OF WUHAN UNIVERSITY OF TECHNOLOGY-MATERIALS SCIENCE EDITION , 2024 , 39 (5) , 1260-1269 . |
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Abstract ：
Face-centered cubic (FCC) metals exhibit varying stacking fault energies (SFE), which predominantly lead to the development of copper-type and brass-type textures during extensive deformation rolling. However, the mechanism underlying the formation of brass-type textures remains poorly understood. This study identifies the significant role of Goss-oriented texture in driving the development of brass-type texture in nickel-based metals. Despite its importance, the Goss-oriented texture has often been overlooked in studies focusing on the rolling texture of FCC metals due to its relatively low occurrence. This investigation explores the formation of Gossoriented texture during the rolling process of nickel-based metals and its influence on microstructural deformation. Research indicates that the formation of Goss-oriented texture primarily arises from two mechanisms: dislocation slip and twinning deformation of copper-oriented grains. While dislocation slip minimally affects the microstructure during metal rolling, twinning deformation induces stress concentration and the initiation of shear bands. These factors subsequently influence dislocation slip in copper-oriented grains, ultimately leading to the formation of brass-type rolling texture.
Keyword ：
Goss-oriented texture Goss-oriented texture Rolling texture Rolling texture Shear bands Shear bands Copper-oriented texture Copper-oriented texture Brass-type texture Brass-type texture
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| GB/T 7714 | Ji, Yaotang , Suo, Hongli , Chen, Tongtong et al. The role of Goss-oriented texture for brass-type texture in nickel-based metals during cold rolling [J]. | MATERIALS TODAY COMMUNICATIONS , 2024 , 41 . |
| MLA | Ji, Yaotang et al. "The role of Goss-oriented texture for brass-type texture in nickel-based metals during cold rolling" . | MATERIALS TODAY COMMUNICATIONS 41 (2024) . |
| APA | Ji, Yaotang , Suo, Hongli , Chen, Tongtong , Ma, Zhen , Huang, Baoxu , Zhang, Zili et al. The role of Goss-oriented texture for brass-type texture in nickel-based metals during cold rolling . | MATERIALS TODAY COMMUNICATIONS , 2024 , 41 . |
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Abstract ：
Building upon our previous database of the thermal, electrical, and mechanical properties of commercial REBCO tape, we have constructed a subsequent database focusing on the Cu layer of such tapes from eight distinct manufacturers. This database encompasses information pertaining to the geometry, purity, and grain orientation of the Cu layer. The primary objective of this database is to not only elucidate the material science of the Cu layer across various commercial tapes but also to establish correlations between the thermal, electrical, and mechanical properties and the aforementioned geometry, purity, and grain orientation parameters. After analysis, three significant findings have been validated. Firstly, the non-uniformity of geometry plays a critical role in the electrical resistivity in the radial direction, primarily through altering the actual contact surface area. Secondly, it has been observed that the total grain boundary length per micrometer thickness exhibits a nearly linear correlation with the thermal conductivity in the circumferential direction. Thirdly, the purity of the Cu layer in all the commercial REBCO tapes is lower than anticipated. It is our aspiration that this database will facilitate enhanced comprehension of the Cu layer in REBCO tapes among a broader spectrum of researchers.
Keyword ：
grain orientation grain orientation purity purity Cu stabilizer Cu stabilizer commercial REBCO tapes commercial REBCO tapes geometry geometry
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| GB/T 7714 | Li, Chengyang , Suo, Hongli , Zhang, Zili et al. The geometry, purity, and grain orientation database of the Cu stabilizer layer and the effect on the electrical and thermal properties of commercial REBCO tapes [J]. | SUPERCONDUCTOR SCIENCE & TECHNOLOGY , 2024 , 37 (12) . |
| MLA | Li, Chengyang et al. "The geometry, purity, and grain orientation database of the Cu stabilizer layer and the effect on the electrical and thermal properties of commercial REBCO tapes" . | SUPERCONDUCTOR SCIENCE & TECHNOLOGY 37 . 12 (2024) . |
| APA | Li, Chengyang , Suo, Hongli , Zhang, Zili , Zhou, Benzhe , Ma, Lin , Liu, Jianhua et al. The geometry, purity, and grain orientation database of the Cu stabilizer layer and the effect on the electrical and thermal properties of commercial REBCO tapes . | SUPERCONDUCTOR SCIENCE & TECHNOLOGY , 2024 , 37 (12) . |
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Abstract ：
The quasi-in situ electron backscatter diffraction method was used to investigate the microstructure and orientation evolution of Cu-45 at.% Ni alloy during the recovery process. For the first time, the "triple junction" movement theory was verified in a Cu-Ni alloy instead of in the pure metal. The "Y-junction" movement was found to be the dominant recovery mechanism in the common lamellar grains. However, this theory did not apply to grains in the area deformed by shear. Unlike the microstructure evolution, the orientation evolution was the same in the areas not deformed and deformed by shear. All the Goss orientations were swallowed by other orientations, whereas all the cube orientations swallowed other orientations. This study helped better understand the recovery process in Cu-Ni and other face-centered cubic alloys after rolling and annealing processes.
Keyword ：
in situ EBSD in situ EBSD triple junction triple junction area deformed by shear area deformed by shear recovery recovery Cu-Ni alloy Cu-Ni alloy
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| GB/T 7714 | Tian, Hui , Suo, Hongli , Wang, Lanjin et al. Investigation of the Microstructure and Rolling Texture Evolution of Cu-45 at.% Ni Alloys during the Recovery Process by Quasi-In Situ Electron Backscatter Diffraction [J]. | JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE , 2023 , 33 (2) : 1007-1020 . |
| MLA | Tian, Hui et al. "Investigation of the Microstructure and Rolling Texture Evolution of Cu-45 at.% Ni Alloys during the Recovery Process by Quasi-In Situ Electron Backscatter Diffraction" . | JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE 33 . 2 (2023) : 1007-1020 . |
| APA | Tian, Hui , Suo, Hongli , Wang, Lanjin , Liu, Min , Ma, Lin , Zhang, Zili et al. Investigation of the Microstructure and Rolling Texture Evolution of Cu-45 at.% Ni Alloys during the Recovery Process by Quasi-In Situ Electron Backscatter Diffraction . | JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE , 2023 , 33 (2) , 1007-1020 . |
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Abstract ：
In this study, the effects of stress-relief annealing (SRA) on the rolled texture of nickel-based alloys were extensively analysed. Biaxially textured Ni-W alloy substrates with strong cube textures were fabricated by cold rolling and recrystallisation annealing for coated conductor applications. The results indicate that the evolution of the rolled texture, and hence the annealed cube texture, were greatly influenced by the stress-induced by deformation. The stress and rolled texture were found to be significantly correlated. X-ray diffraction and electron backscattered diffraction analyses were used to explore the effect of SRA on the cold-rolled microstructure. The stress distribution was found to be associated with the copper texture. The addition of SRA effectively eliminated stress and strengthened the copper and S textures, thereby facil-itating the formation of the final annealed cube texture. Finally, the mechanism by which stress influences the rolled texture of nickel-based alloys was elaborated in detail.(c) 2022 Elsevier B.V. All rights reserved.
Keyword ：
Cube texture Cube texture Rolled texture Rolled texture Stress -relief annealing Stress -relief annealing XRD XRD EBSD EBSD
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| GB/T 7714 | Ji, Yaotang , Suo, Hongli , Liu, Jing et al. Effect of stress-relief annealing on rolled texture of nickel-based alloys [J]. | JOURNAL OF ALLOYS AND COMPOUNDS , 2022 , 903 . |
| MLA | Ji, Yaotang et al. "Effect of stress-relief annealing on rolled texture of nickel-based alloys" . | JOURNAL OF ALLOYS AND COMPOUNDS 903 (2022) . |
| APA | Ji, Yaotang , Suo, Hongli , Liu, Jing , Ma, Lin , Liu, Min , Shaheen, Kausar et al. Effect of stress-relief annealing on rolled texture of nickel-based alloys . | JOURNAL OF ALLOYS AND COMPOUNDS , 2022 , 903 . |
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Abstract ：
Hydrogen energy, as a clean and renewable energy, has attracted much attention in recent years. Water electrolysis via the hydrogen evolution reaction at the cathode coupled with the oxygen evolution reaction at the anode is a promising method to produce hydrogen. Given the shortage of freshwater resources on the planet, the direct use of seawater as an electrolyte for hydrogen production has become a hot research topic. Direct use of seawater as the electrolyte for water electrolysis can reduce the cost of hydrogen production due to the great abundance and wide availability. In recent years, various high-efficiency electrocatalysts have made great progress in seawater splitting and have shown great potential. This review introduces the mechanisms and challenges of seawater splitting and summarizes the recent progress of various electrocatalysts used for hydrogen and oxygen evolution reaction in seawater electrolysis in recent years. Finally, the challenges and future opportunities of seawater electrolysis for hydrogen and oxygen production are presented.
Keyword ：
metal phosphides metal phosphides seawater splitting seawater splitting electrocatalysts electrocatalysts metal nitrides metal nitrides metal oxides metal oxides
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| GB/T 7714 | Jiang, Siqi , Suo, Hongli , Zhang, Teng et al. Recent Advances in Seawater Electrolysis [J]. | CATALYSTS , 2022 , 12 (2) . |
| MLA | Jiang, Siqi et al. "Recent Advances in Seawater Electrolysis" . | CATALYSTS 12 . 2 (2022) . |
| APA | Jiang, Siqi , Suo, Hongli , Zhang, Teng , Liao, Caizhi , Wang, Yunxiao , Zhao, Qinglan et al. Recent Advances in Seawater Electrolysis . | CATALYSTS , 2022 , 12 (2) . |
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Abstract ：
MgB2 superconductor pellets were synthesized through Mg gas infiltration method using nanosized-and microsized B powders. There was a marked difference in the superconducting properties of the two samples, particularly in the pinning force and dominant pinning mechanism. The microstructures of the samples were observed using HR-TEM and STEM-HAADF, and the results showed that the primary reason for the difference in the superconducting properties is the distribution of the nanosized second-phase particle MgO. Additionally, a feasible reaction model for the Mg gas infiltration method was established. Compared to the Mg liquid infil-tration method, the gas infiltration showed better penetrability ability with a small amount of residual Mg. This study presents a novel synthesis process to fabricate an MgB2 pellet with superior density and superconducting properties. This method can be used in multiple applications such as superconducting bearings, compact su-perconductor magnets, and magnetic shielding.
Keyword ：
Mg gas infiltration Mg gas infiltration MgB2 MgB2 Superconducting connectivity Superconducting connectivity Nanosized B powder Nanosized B powder
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| GB/T 7714 | Zhao, Wanli , Suo, HongLi , Wang, Shuo et al. Mg gas infiltration for the fabrication of MgB2 pellets using nanosized and microsized B powders [J]. | JOURNAL OF THE EUROPEAN CERAMIC SOCIETY , 2022 , 42 (15) : 7036-7048 . |
| MLA | Zhao, Wanli et al. "Mg gas infiltration for the fabrication of MgB2 pellets using nanosized and microsized B powders" . | JOURNAL OF THE EUROPEAN CERAMIC SOCIETY 42 . 15 (2022) : 7036-7048 . |
| APA | Zhao, Wanli , Suo, HongLi , Wang, Shuo , Ma, Lin , Wang, Lei , Wang, Qiuliang et al. Mg gas infiltration for the fabrication of MgB2 pellets using nanosized and microsized B powders . | JOURNAL OF THE EUROPEAN CERAMIC SOCIETY , 2022 , 42 (15) , 7036-7048 . |
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Abstract ：
We report a novel doping strategy for YBa2Cu3O7-x (YBCO) superconducting films by using a positive mismatch, Ba2YNbO6 (BYNO), and a negative mismatch, LaAlO3 (LAO), simultaneously. Double doping can significantly reduce the c-strain in the YBCO film by canceling the strain between the two dopants. By systematically optimizing the doping amount of both BYNO and LAO, it was found that BYNO and LAO do not act equally. The microstructure and distribution of both BYNO and LAO were investigated with magneto-optic microscopy and scanning electron microscopy. The effect of BYNO and LAO on pinning was confirmed. The results of this study will help select appropriate positive mismatch and negative mismatch dopants, which is fundamental to the design and fabrication of pinning centers to fit different application scenarios. © 2020 Elsevier Ltd
Keyword ：
Lanthanum compounds Lanthanum compounds Semiconductor doping Semiconductor doping Copper compounds Copper compounds Yttrium barium copper oxides Yttrium barium copper oxides Aluminum compounds Aluminum compounds Superconducting films Superconducting films Niobium compounds Niobium compounds Barium compounds Barium compounds Scanning electron microscopy Scanning electron microscopy
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| GB/T 7714 | Xu, Yan , Suo, Hongli , Qureishy, Thomas et al. Systematic research on the effect of both positive and negative mismatch dopants in double-doped YBCO superconducting films [J]. | Journal of the European Ceramic Society , 2021 , 41 (1) : 480-487 . |
| MLA | Xu, Yan et al. "Systematic research on the effect of both positive and negative mismatch dopants in double-doped YBCO superconducting films" . | Journal of the European Ceramic Society 41 . 1 (2021) : 480-487 . |
| APA | Xu, Yan , Suo, Hongli , Qureishy, Thomas , Grivel, Jean-Claude , Mikheenko, Pavlo , Liu, Min et al. Systematic research on the effect of both positive and negative mismatch dopants in double-doped YBCO superconducting films . | Journal of the European Ceramic Society , 2021 , 41 (1) , 480-487 . |
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