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学者姓名：汪炳叔
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Abstract ：
The laminated carbon-nanotubes/Cu (CNTs/Cu) composites were fabricated by electrophoretic deposition (EPD), spark plasma sintering (SPS), and hot rolling to achieve a good combination of properties. The microstructure, mechanical properties, and electrical conductivity were investigated, and the strengthening mechanism was discussed. Results indicated that functional groups were introduced onto the surface of CNTs after acid treatment, enabling the formation of an optimal CNT deposition morphology on the Cu matrix at an electrophoretic deposition voltage of 75 V. The sintered CNTs/Cu composite exhibits a laminated structure with coarse grains and randomly distributed textures. Compared to sintered pure Cu, the sintered composite demonstrates a 42.07 % increase in tensile strength and a 17.8 % improvement in elongation. And the electrical conductivity reaches 93.05 % of the International Annealed Copper Standard (IACS). Subsequent hot rolling refined the grains and reoriented the texture to deformation textures. The hot-rolled composites achieve a tensile strength of 355 MPa, an elongation of 12.2 %, and a conductivity of 85.53 % IACS. The strengthening mechanisms of CNTs/Cu composites involve grain refinement, load transfer, and thermal mismatch strengthening, with grain refinement as the primary factor. Grain refinement, crack deflection, and bridging-pullout of CNTs are mainly responsible for the good combination of strength, ductility and electrical conductivity.
Keyword ：
Carbon-nanotubes/Cu composites Carbon-nanotubes/Cu composites Electrophoretic deposition Electrophoretic deposition Laminated structure Laminated structure Microstructure Microstructure Strengthening Strengthening
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| GB/T 7714 | Wu, Hanqun , Deng, Liping , Pan, Xincheng et al. Study on the microstructure, properties and strengthening mechanisms of electrophoretic deposited carbon-nanotubes/Cu composites [J]. | MATERIALS CHARACTERIZATION , 2025 , 221 . |
| MLA | Wu, Hanqun et al. "Study on the microstructure, properties and strengthening mechanisms of electrophoretic deposited carbon-nanotubes/Cu composites" . | MATERIALS CHARACTERIZATION 221 (2025) . |
| APA | Wu, Hanqun , Deng, Liping , Pan, Xincheng , Wang, Bingshu , Xiang, Hongliang . Study on the microstructure, properties and strengthening mechanisms of electrophoretic deposited carbon-nanotubes/Cu composites . | MATERIALS CHARACTERIZATION , 2025 , 221 . |
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To clarify asymmetric mechanical behaviors of the extruded Mg-4.58Zn-2.6Gd-0.18Zr alloy during room temperature tension and compression, the evolution of microstructure, texture and strain hardening rate were systematically investigated when loading along the extrusion direction (ED). The results found that the asextruded alloy exhibited <1010>-<1120> double-peak fiber texture, leading to obvious tension compression yield asymmetry and compressive yield plateau. Fiber texture kept stable and only texture intensity gradually decreased with the increasing tensile strain, while fiber texture was exhausted due to the extension twinning and <0001> texture component was aggravated with the increasing compressive strain. Moreover, twinning parts within grains with <1010> fiber texture was re-oriented to the c-axis paralleling to the ED, and that in <1120> fiber texture deviated about 30 degrees away from the ED. This soft orientation would be finally rotated to the <0001> paralleling to the ED under the action of basal slip, explaining why the <0001> pole dispersed at first and then concentrated with the increasing compressive strain. Three stages of strain hardening rate were both observed for tensile and compressive tests, while increment of Stage II was only observed under compression. Stage II in compression could be further divided into two parts with different slopes. Such phenomenon was seldom reported in Mg alloys, which was caused by different propagation and re-orientation of extension twinning in double-peak fiber texture, and weakened the effect of twin lamella segmentation with the increasing compressive strain. Findings in this work given us a better understanding of asymmetric tensile-compressive mechanical behaviors of extruded Mg alloys with double-peak fiber texture.
Keyword ：
Extension twinning Extension twinning Microstructure Microstructure Strain hardening Strain hardening Tension and compression asymmetry Tension and compression asymmetry Texture evolution Texture evolution
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| GB/T 7714 | Kan, Zhiyong , Yang, Guangyu , Xiao, Lei et al. Asymmetric tension-compression mechanical behaviors of extruded Mg-4.58Zn-2.6Gd-0.18Zr alloy with double-peak fiber texture [J]. | JOURNAL OF ALLOYS AND COMPOUNDS , 2024 , 989 . |
| MLA | Kan, Zhiyong et al. "Asymmetric tension-compression mechanical behaviors of extruded Mg-4.58Zn-2.6Gd-0.18Zr alloy with double-peak fiber texture" . | JOURNAL OF ALLOYS AND COMPOUNDS 989 (2024) . |
| APA | Kan, Zhiyong , Yang, Guangyu , Xiao, Lei , Wang, Chunhui , Qin, He , Wang, Bingshu et al. Asymmetric tension-compression mechanical behaviors of extruded Mg-4.58Zn-2.6Gd-0.18Zr alloy with double-peak fiber texture . | JOURNAL OF ALLOYS AND COMPOUNDS , 2024 , 989 . |
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A series of zirconium phosphate (ZrP) loaded H -beta -25 zeolite (i.e., ZrP@HB) multifunctional composite catalysts were synthesized by a simple co -precipitation method, and the one -pot upgrading for the transfer hydrogenation of furfural to gamma -valerolactone (GVL) was systematically investigated through various characterizations and catalytic evaluation experiments. Comparative characterization analysis of the ZrP@HB-X (Y) catalysts showed that the ZrP@HB-4(4) catalyst has uniform distribution of elements, exhibiting a large specific surface area and hierarchical mesoporous/microporous structure. Fourier transform infrared spectroscopy of pyridine (Py-FTIR) and NH 3 temperature -programmed desorption characterizations indicated the presence of Lewis and Br & oslash; nsted acid sites, as well as weak, moderate, and strong acid sites in the ZrP@HB-4(4) catalyst. It was confirmed by X-ray photoelectron spectroscopy and FTIR that the main reason for Lewis and Br & oslash; nsted acid sites formation is the presence of P-O-Zr, P -O -H, and HB zeolite on the ZrP@HB-4(4) catalyst. The HB zeolite as well as Zr and P ratio, can be easily adjusted to efficiently regulate the acidity strength and Lewis and Br & oslash; nsted acid sites of the ZrP@HB-X(Y) catalysts. The catalytic experiments demonstrated that the physicochemical properties of the ZrP@HB-4(4) catalyst mentioned above significantly enhance the GVL production. Notably, Lewis and Br & oslash; nsted acid sites as well as transition metal sites of Zr in the ZrP@HB-4(4) catalyst were identified as the main factors that enhance the yield of the target product. By optimizing the reaction conditions, the yield of GVL could be as high as 88.16%. Reusability experiments demonstrate that the ZrP@HB-4(4) catalyst possesses excellent stability. Using levulinic acid as the substrate, the yield of GVL reached 93.92%, suggesting its potential versatility.
Keyword ：
Efficient upgrading Efficient upgrading Furfural Furfural gamma-Valerolactone gamma-Valerolactone Levulinic acid Levulinic acid Multifunctional catalyst Multifunctional catalyst Transfer hydrogenation Transfer hydrogenation
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| GB/T 7714 | Qiu, Jiarong , Liu, Yi , Zhang, Jingwen et al. One-pot cascade process for efficient upgrading of furfural to γ-valerolactone over adjustable Lewis-Brønsted bi-acidic catalyst [J]. | INDUSTRIAL CROPS AND PRODUCTS , 2024 , 214 . |
| MLA | Qiu, Jiarong et al. "One-pot cascade process for efficient upgrading of furfural to γ-valerolactone over adjustable Lewis-Brønsted bi-acidic catalyst" . | INDUSTRIAL CROPS AND PRODUCTS 214 (2024) . |
| APA | Qiu, Jiarong , Liu, Yi , Zhang, Jingwen , Zhou, Ben , Yang, Qiyue , Zhang, Liangqing et al. One-pot cascade process for efficient upgrading of furfural to γ-valerolactone over adjustable Lewis-Brønsted bi-acidic catalyst . | INDUSTRIAL CROPS AND PRODUCTS , 2024 , 214 . |
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This study investigates the influence of torsional deformation with different equivalent strains on the microstructural evolution and mechanical properties in pure copper at room temperature. The grain size exhibits a gradient distribution pattern with decreasing shear strains. Texture analysis reveals the development of a typical torsion texture during deformation. And the texture component is significantly influenced by the strain level. In samples subjected to low strain at the center position, the dominant texture components are mainly A and A* components. As strain increases in the 1/4 layer sample region, there is a gradual decrease in strength for A* component, while A component remains dominant; additionally, B and C textures exhibit increased strength. At positions subjected to maximum strain near the surface area, B texture replaces A as the strongest texture component. Results also indicate that torsional deformation enhances hardness, strength, and plasticity due to dislocation strengthening, fine grain strengthening and synergistic effects during deformation. Furthermore, the formation of torsional texture during this process may contribute to improved plasticity. © 2023
Keyword ：
Copper Copper Plasticity Plasticity Strain Strain Textures Textures Torsional stress Torsional stress
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| GB/T 7714 | Zhang, Mingxue , Wang, Bingshu , Deng, Liping et al. Effect of torsional deformation on microstructure and mechanical properties of pure copper [J]. | Materials Characterization , 2024 , 214 . |
| MLA | Zhang, Mingxue et al. "Effect of torsional deformation on microstructure and mechanical properties of pure copper" . | Materials Characterization 214 (2024) . |
| APA | Zhang, Mingxue , Wang, Bingshu , Deng, Liping , Wu, Hanqun . Effect of torsional deformation on microstructure and mechanical properties of pure copper . | Materials Characterization , 2024 , 214 . |
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Cadmium (Cd) pollution has become a global issue due to industrial and agricultural developments. However, the molecular mechanism of Cd-induced detrimental effects and relevant signal transduction/metabolic networks are largely unknown in marine fishes. Here, greenfin horse-faced filefish (Thamnaconus septentrionalis) were exposed to 5.0 mg/L Cd up to 7 days. We applied both biochemical methods and multi-omics techniques to investigate how the gills respond to Cd exposure. Our findings revealed that Cd exposure caused the formation of reactive oxygen species (ROS), which in turn activated the MAPK and apoptotic pathways to alleviate oxidative stress and cell damage. Glycolysis, protein degradation, as well as fatty acid metabolism might assist to meet the requirements of nutrition and energy under Cd stress. We also found that long-term (7 days, "long-term" means compared to 12 and 48 h) Cd exposure caused the accumulation of succinate, which would in turn trigger an inflammatory response and start an immunological process. Moreover, ferroptosis might induce inflammation. Overall, Cd exposure caused oxidative stress, energy metabolism disturbance, and immune response in greenfin horse-faced filefish. Our conclusions can be used as references for safety risk assessment of Cd to marine economic fishes.
Keyword ：
cadmium stress cadmium stress energy metabolism disorder energy metabolism disorder immune response immune response metabolomics metabolomics oxidative stress oxidative stress transcriptomics transcriptomics
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| GB/T 7714 | Zhang, Xuanxuan , Zhang, Wenquan , Zhao, Linlin et al. Mechanisms of Gills Response to Cadmium Exposure in Greenfin Horse-Faced Filefish (Thamnaconus septentrionalis): Oxidative Stress, Immune Response, and Energy Metabolism [J]. | ANIMALS , 2024 , 14 (4) . |
| MLA | Zhang, Xuanxuan et al. "Mechanisms of Gills Response to Cadmium Exposure in Greenfin Horse-Faced Filefish (Thamnaconus septentrionalis): Oxidative Stress, Immune Response, and Energy Metabolism" . | ANIMALS 14 . 4 (2024) . |
| APA | Zhang, Xuanxuan , Zhang, Wenquan , Zhao, Linlin , Zheng, Li , Wang, Bingshu , Song, Chengbing et al. Mechanisms of Gills Response to Cadmium Exposure in Greenfin Horse-Faced Filefish (Thamnaconus septentrionalis): Oxidative Stress, Immune Response, and Energy Metabolism . | ANIMALS , 2024 , 14 (4) . |
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To achieve high thermal efficiency, today's nuclear reactor structures are exposed to higher temperatures and pressures, which requires the use of high-strength steels with specific properties, such as ODS steels. There is a need to clarify the evolution of the microstructure and properties of steels at elevated temperatures. This study systematically investigates the evolution of microstructure, texture, and mechanical property variations of 12CrODS steels after hot-rolling and subsequent annealing at 1000 degrees C and 1200 degrees C. The investigation utilizes optical microscopy, electron backscatter diffraction technique, and mechanical property measurements. The microstructure of hot-rolled samples shows a layered alternating distribution, which is distinguished by a notable presence of the alpha-fiber texture. Following annealing at 1000 degrees C, the martensite grains are smaller with a reduced hardness, while maintaining a strong alpha-fiber texture. After annealing at 1200 degrees C, there is a rapid increase in the growth of martensite grains, a significant rise in hardness, a reduction in the alpha-fiber texture characteristics, and an improvement in the gamma-fiber texture characteristics. Moreover, the maximum intensity of the alpha-fiber texture diminishes as the annealing temperature increases. The mechanical properties of the samples deteriorated after annealing at 1200 degrees C, which can be attributed to the coarse martensite grains and the texture components containing the {001} cleavage plane dominating the occurrence of brittle cleavage fracture. The 0.1Y sample after annealing at 1000 degrees C exhibits an excellent combination of strength (1458 MPa) and ductility (20.3%), which is owing to the unique heterogeneous grain structure and the evolution of favorable texture.
Keyword ：
Annealing Annealing Mechanical properties Mechanical properties Microstructure characteristics Microstructure characteristics ODS steel ODS steel Texture Texture
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| GB/T 7714 | Li, Jiajie , Chen, Jingxian , You, Zhangjing et al. Effect of annealing temperature on the evolution of microstructure, texture, and mechanical properties of hot-rolled 12Cr-ODS steel [J]. | JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T , 2024 , 30 : 4800-4812 . |
| MLA | Li, Jiajie et al. "Effect of annealing temperature on the evolution of microstructure, texture, and mechanical properties of hot-rolled 12Cr-ODS steel" . | JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T 30 (2024) : 4800-4812 . |
| APA | Li, Jiajie , Chen, Jingxian , You, Zhangjing , Deng, Liping , Wang, Chen , Chen, Junfeng et al. Effect of annealing temperature on the evolution of microstructure, texture, and mechanical properties of hot-rolled 12Cr-ODS steel . | JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T , 2024 , 30 , 4800-4812 . |
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In this paper, the effects of Hf addition on the mechanical properties, electrical conductivity and microstructure of Cu-Sn-P alloy were investigated. The results show that the Hf addition can enhance the mechanical properties and electrical conductivity of Cu-Sn-P alloy. The alloy with 0.05 wt% Hf exhibits the best comprehensive performance with yield strength of 625 MPa, tensile strength of 661 MPa and electrical conductivity of 16.8 %IACS. Compared with the Cu-Sn-P alloy without Hf addition, the yield strength and tensile strength are increased by 8.4% and 7.8%, and the electrical conductivity is increased by 24.4%. The increase in the strength of Hf-added alloy can be attributed to the synergistic effect of multiple strengthening mechanisms, including fine grain strengthening, twin strengthening, dislocation strengthening, precipitation strengthening and Σ3n (n = 1, 2, 3) grain boundary strengthening. Moreover, the Hf-P precipitates can be observed in the Hf-added alloy. According to the amount of Hf addition, these precipitates can manifest as the fine HfP2 phase and the coarse HfP phase. The formation of Hf-P precipitates contributes to the precipitation strengthening and the purification of Cu matrix, thus contributing to the improvement of strength and conductivity. © 2024 The Authors
Keyword ：
Copper alloys Copper alloys Electric conductivity Electric conductivity Hafnium alloys Hafnium alloys Lead alloys Lead alloys Tensile strength Tensile strength Tin alloys Tin alloys Yield stress Yield stress
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| GB/T 7714 | Wei, Biao , Yang, Haoren , Wang, Chen et al. Effects of Hf addition on the microstructure and properties of Cu-Sn-P alloy [J]. | Journal of Materials Research and Technology , 2024 , 33 : 2981-2988 . |
| MLA | Wei, Biao et al. "Effects of Hf addition on the microstructure and properties of Cu-Sn-P alloy" . | Journal of Materials Research and Technology 33 (2024) : 2981-2988 . |
| APA | Wei, Biao , Yang, Haoren , Wang, Chen , Zhou, Jianhui , Xiao, Lei , Ma, Tianyu et al. Effects of Hf addition on the microstructure and properties of Cu-Sn-P alloy . | Journal of Materials Research and Technology , 2024 , 33 , 2981-2988 . |
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环境科学概论课程是环境科学类专业的基础课，在培养环境专业人才方面发挥着重要作用。在专业课程教学过程中，适当融入契合度高的思政元素，是课程思政背景下教学改革的关键所在。课程组深入挖掘了环境科学概论中蕴含的思政元素，并进行了整体融入设计。文章围绕课程的建设、课程思政理念与教学目标的确定、课程思政元素的挖掘与融入、考核评价体系的构建、教学反思等方面，探索对环境科学概论课程进行全面改革，以实现环境专业知识与思政元素的有机融合，落实立德树人的根本任务。
Keyword ：
思政融入方法 思政融入方法 教学改革 教学改革 教学目标 教学目标 环境科学概论 环境科学概论 课程思政 课程思政
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| GB/T 7714 | 张良清 , 邱佳容 , 汪炳叔 . 课程思政背景下环境科学概论课程教学改革探索 [J]. | 大学教育 , 2024 , PageCount-页数: 6 (10) : 94-99 . |
| MLA | 张良清 et al. "课程思政背景下环境科学概论课程教学改革探索" . | 大学教育 PageCount-页数: 6 . 10 (2024) : 94-99 . |
| APA | 张良清 , 邱佳容 , 汪炳叔 . 课程思政背景下环境科学概论课程教学改革探索 . | 大学教育 , 2024 , PageCount-页数: 6 (10) , 94-99 . |
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An eight-sided prism sample, obtained from a hot-rolled AZ31 magnesium alloy sheet, was compressed at room temperature along the transverse direction to investigate the influence of local strain on twinning behavior using electron backscatter diffraction (EBSD) measurements, hardness distribution, and metallographic observations. The octagonal surface of the sample was divided into distinct regions based on hardness distribution and metallographic observations. Combined analysis of the Schmid factor (SF) and the strain compatibility factor (m') was employed to study twin variant selection. Basal on SF ratio distribution, the Schmid factor criterion, can predict over 75% of observed twin variants in regions A and D (normal stress samples). In contrast, 64% of twin variant selection behavior in region C (shear stress sample) can be effectively explained using a pure shear model. Twin variants with high strain compatibility factors may prefer activation to reduce stress concentration. The strain compatibility factor is more appropriate than the Schmid factor for analyzing the effect of local strain on the selection behavior of twin variants.
Keyword ：
AZ31 magnesium alloy AZ31 magnesium alloy local strain state local strain state Schmid factor Schmid factor strain compatibility factor strain compatibility factor twin variants selection twin variants selection
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| GB/T 7714 | Lu, Boqin , Wang, Wei , Yao, Jinyi et al. A Study of {10-12} Twinning Activity Associated with Stress State in Mg-3Al-1Zn Alloy during Compression [J]. | METALS , 2024 , 14 (5) . |
| MLA | Lu, Boqin et al. "A Study of {10-12} Twinning Activity Associated with Stress State in Mg-3Al-1Zn Alloy during Compression" . | METALS 14 . 5 (2024) . |
| APA | Lu, Boqin , Wang, Wei , Yao, Jinyi , Deng, Liping , Xiao, Lei , Wang, Bingshu . A Study of {10-12} Twinning Activity Associated with Stress State in Mg-3Al-1Zn Alloy during Compression . | METALS , 2024 , 14 (5) . |
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在如今能源危机以及环境污染的大背景下,生物质作为一种能够代替化石燃料的可再生能源之一,如何将生物质催化转化为有价值的己醇和己二醇在生物质转化领域受到了广泛的研究关注.己醇和己二醇被认为是一种具有高度工业价值的C6醇,其中己二醇在聚酯工业发展的领域有重要的作用,己醇则被认为是一种合适的替代燃料.本文根据原料和不同催化剂对生物质基制备己醇和己二醇的研究工作进行了归纳总结,系统阐述了近年来通过纤维素基、5-羟甲基糠醛及其衍生物、己二酸及其酯类等生物质基催化转化制备己醇和己二醇的研究进展,分析了 1,6-己二醇在催化制备C6化合物(ε-己内酯、己二酸、6-羟基己酸和己二胺)方面的应用,并在此基础上对催化加氢制备己醇和己二醇的发展趋势进行了展望,为未来进一步绿色地生产可持续的C6化合物提供理论指导和有益参考.
Keyword ：
C6化合物 C6化合物 催化剂 催化剂 己二醇 己二醇 己醇 己醇 生物质基 生物质基
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| GB/T 7714 | 洪泽龙 , 周本 , 邱佳容 et al. 生物质基催化转化制备己醇和己二醇及其衍生品 [J]. | 化工进展 , 2024 , 43 (11) : 6091-6110 . |
| MLA | 洪泽龙 et al. "生物质基催化转化制备己醇和己二醇及其衍生品" . | 化工进展 43 . 11 (2024) : 6091-6110 . |
| APA | 洪泽龙 , 周本 , 邱佳容 , 张良清 , 陈剑锋 , 汪炳叔 et al. 生物质基催化转化制备己醇和己二醇及其衍生品 . | 化工进展 , 2024 , 43 (11) , 6091-6110 . |
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