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学者姓名:汪炳叔

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Effect of annealing parameters on microstructure, texture, and mechanical properties of hot-rolled pure yttrium plate SCIE
期刊论文 | 2025 , 60 (14) , 6387-6401 | JOURNAL OF MATERIALS SCIENCE
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Abstract :

This study investigates the effects of different annealing parameters on the microstructure, texture, and mechanical properties of hot-rolled pure yttrium plates using electron backscatter diffraction for the first time. With the increase of annealing temperature and time, the volume fraction of low-angle grain boundaries of hot-rolled pure yttrium plate decreases. While the intensity of the texture firstly decreases and then increases. During annealing at 600 degrees C, the {0002} pole density shifted from deviating from the normal direction (ND) by similar to 30 degrees to being in line with the ND as the annealing time increased, forming a typical basal texture. This can be attributed to its unique recrystallization mechanism. The strength and hardness of the as-annealed samples were significantly lower than that under the hot-rolled state, while the elongation increased when compared with the hot-rolled sample. The considerable mechanical properties of pure yttrium plate are obtained by hot rolling and following annealing at 600 degrees C for 1 h.

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GB/T 7714 Ruan, Wei , Luo, Linguang , Li, Jiajie et al. Effect of annealing parameters on microstructure, texture, and mechanical properties of hot-rolled pure yttrium plate [J]. | JOURNAL OF MATERIALS SCIENCE , 2025 , 60 (14) : 6387-6401 .
MLA Ruan, Wei et al. "Effect of annealing parameters on microstructure, texture, and mechanical properties of hot-rolled pure yttrium plate" . | JOURNAL OF MATERIALS SCIENCE 60 . 14 (2025) : 6387-6401 .
APA Ruan, Wei , Luo, Linguang , Li, Jiajie , Deng, Liping , Wang, Chen , Chen, Junfeng et al. Effect of annealing parameters on microstructure, texture, and mechanical properties of hot-rolled pure yttrium plate . | JOURNAL OF MATERIALS SCIENCE , 2025 , 60 (14) , 6387-6401 .
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Effect of annealing parameters on microstructure, texture, and mechanical properties of hot-rolled pure yttrium plate EI
期刊论文 | 2025 , 60 (14) , 6387-6401 | Journal of Materials Science
Effect of annealing parameters on microstructure, texture, and mechanical properties of hot-rolled pure yttrium plate Scopus
期刊论文 | 2025 | Journal of Materials Science
Study on the microstructure, properties and strengthening mechanisms of electrophoretic deposited carbon-nanotubes/Cu composites SCIE
期刊论文 | 2025 , 221 | MATERIALS CHARACTERIZATION
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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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Study on the microstructure, properties and strengthening mechanisms of electrophoretic deposited carbon-nanotubes/Cu composites Scopus
期刊论文 | 2025 , 221 | Materials Characterization
Study on the microstructure, properties and strengthening mechanisms of electrophoretic deposited carbon-nanotubes/Cu composites EI
期刊论文 | 2025 , 221 | Materials Characterization
One-pot cascade process for efficient upgrading of furfural to γ-valerolactone over adjustable Lewis-Brønsted bi-acidic catalyst SCIE
期刊论文 | 2024 , 214 | INDUSTRIAL CROPS AND PRODUCTS
WoS CC Cited Count: 5
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Abstract :

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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One-pot cascade process for efficient upgrading of furfural to γ-valerolactone over adjustable Lewis-Brønsted bi-acidic catalyst Scopus
期刊论文 | 2024 , 214 | Industrial Crops and Products
One-pot cascade process for efficient upgrading of furfural to γ-valerolactone over adjustable Lewis-Brønsted bi-acidic catalyst EI
期刊论文 | 2024 , 214 | Industrial Crops and Products
Effect of annealing temperature on the evolution of microstructure, texture, and mechanical properties of hot-rolled 12Cr-ODS steel SCIE
期刊论文 | 2024 , 30 , 4800-4812 | JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
WoS CC Cited Count: 2
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Abstract :

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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Effect of annealing temperature on the evolution of microstructure, texture, and mechanical properties of hot-rolled 12Cr-ODS steel EI
期刊论文 | 2024 , 30 , 4800-4812 | Journal of Materials Research and Technology
Effect of annealing temperature on the evolution of microstructure, texture, and mechanical properties of hot-rolled 12Cr-ODS steel Scopus
期刊论文 | 2024 , 30 , 4800-4812 | Journal of Materials Research and Technology
Mechanisms of Gills Response to Cadmium Exposure in Greenfin Horse-Faced Filefish (Thamnaconus septentrionalis): Oxidative Stress, Immune Response, and Energy Metabolism SCIE
期刊论文 | 2024 , 14 (4) | ANIMALS
WoS CC Cited Count: 1
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Abstract :

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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Mechanisms of Gills Response to Cadmium Exposure in Greenfin Horse-Faced Filefish (Thamnaconus septentrionalis): Oxidative Stress, Immune Response, and Energy Metabolism Scopus
期刊论文 | 2024 , 14 (4) | Animals
Asymmetric tension-compression mechanical behaviors of extruded Mg-4.58Zn-2.6Gd-0.18Zr alloy with double-peak fiber texture SCIE
期刊论文 | 2024 , 989 | JOURNAL OF ALLOYS AND COMPOUNDS
WoS CC Cited Count: 2
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Abstract :

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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Asymmetric tension-compression mechanical behaviors of extruded Mg-4.58Zn-2.6Gd-0.18Zr alloy with double-peak fiber texture Scopus
期刊论文 | 2024 , 989 | Journal of Alloys and Compounds
Asymmetric tension-compression mechanical behaviors of extruded Mg-4.58Zn-2.6Gd-0.18Zr alloy with double-peak fiber texture EI
期刊论文 | 2024 , 989 | Journal of Alloys and Compounds
Effect of Loading Direction on Tensile-Compressive Mechanical Behaviors of Mg-5Zn-2Gd-0.2Zr Alloy with Heterogeneous Grains SCIE
期刊论文 | 2024 , 14 (10) | CRYSTALS
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Abstract :

The tension-compression yield asymmetry caused by the strengthening of Mg-Zn-Gd-Zr alloy due to extrusion deformation is an important issue that must be addressed in its application. In this study, the effects of loading direction on the tensile and compressive mechanical behaviors of Mg-5Zn-2Gd-0.2Zr alloy were systematically investigated. As the loading angle (the angle between the loading direction and the extrusion direction) increases from 0 degrees to 30 degrees, 45 degrees, 60 degrees and 90 degrees, the tensile yield strength decreases more significantly than the compressive yield strength. Consequently, the tension-compression yield asymmetry is gradually improved. Additionally, the ultimate compressive strength decreases more markedly than the ultimate tensile strength with the increment of the loading angle. In tensile tests conducted at 0 degrees, 30 degrees and 45 degrees, two distinct stages of decreasing strain hardening rates are typically observed. For the 60 degrees and 90 degrees tensile tests, one unusual ascending stage of strain hardening rate is observed. For all compressive tests, three stages of strain hardening are consistently noted; however, the increment in strain hardening rate caused by {10-12} extension twinning decreases with the increasing loading angle. A model combining loading angle and Schmid factor distribution was established. The calculated results indicate that the dominant deformation modes during the yielding process also vary significantly with the loading conditions. This clarification highlights the differences in yield strength variations between tension and compression. Finally, an analysis of the plane trace and crack propagation direction near the fracture surface reveals the fracture mechanisms associated with tensile and compressive tests at different loading directions. This study promotes understanding of the mechanical behaviors of Mg-5Zn-2Gd-0.2Zr alloy under different loading directions, and helps to thoroughly elucidate the anisotropic effects of texture on the mechanical properties of magnesium alloys.

Keyword :

fracture mechanism fracture mechanism heterogeneous grains heterogeneous grains magnesium alloy magnesium alloy strain hardening strain hardening tensile and compressive strength tensile and compressive strength

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GB/T 7714 Chen, Jieming , Xiao, Lei , Wang, Xuefang et al. Effect of Loading Direction on Tensile-Compressive Mechanical Behaviors of Mg-5Zn-2Gd-0.2Zr Alloy with Heterogeneous Grains [J]. | CRYSTALS , 2024 , 14 (10) .
MLA Chen, Jieming et al. "Effect of Loading Direction on Tensile-Compressive Mechanical Behaviors of Mg-5Zn-2Gd-0.2Zr Alloy with Heterogeneous Grains" . | CRYSTALS 14 . 10 (2024) .
APA Chen, Jieming , Xiao, Lei , Wang, Xuefang , Li, Zhuo , Wang, Chen , Wang, Bingshu et al. Effect of Loading Direction on Tensile-Compressive Mechanical Behaviors of Mg-5Zn-2Gd-0.2Zr Alloy with Heterogeneous Grains . | CRYSTALS , 2024 , 14 (10) .
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Effect of Loading Direction on Tensile-Compressive Mechanical Behaviors of Mg-5Zn-2Gd-0.2Zr Alloy with Heterogeneous Grains Scopus
期刊论文 | 2024 , 14 (10) | Crystals
Complete genome analysis of deep-sea hydrothermal sulfur-oxidizing bacterium Sulfitobacter sp. TCYB15 associated with mussel Bathymodiolus marisindicus and insights into its habitat adaptation SCIE
期刊论文 | 2024 , 78 | MARINE GENOMICS
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Sulfitobacter sp. TCYB15, a sulfur-oxidizing bacterium, was isolated from the gills of Bathymodiolus marisindicus at Tiancheng hydrothermal vent. In this study, the whole genome of Sulfitobacter sp. TCYB15 was analyzed. And its metabolic characteristics and potential adaptation mechanisms were discussed. The results showed that the complete genome of strain TCYB15 was 3,640,800 bp in length with the 60.5 % G + C content. One chromosome and four circular plasmids were present. It contained 3536 coding genes and 56 non coding genes (including 9 rRNAs, 47 tRNAs). Sulfitobacter sp. TCYB15 had multiple sulfur metabolism traits that allowed it to acquire energy in the hydrothermal environment. One pair of luxI/R-type quorum sensing gene was annotated and two AHL signal molecules (C6-HSL and C8-HSL) were identified. A series of genes involved in biofilm formation, exopolysaccharide production, flagella, chemotaxis, and resistance to heavy metals and osmotic stress were found to adapt to extreme environments. This study could shed light on the genetic basis of potential survival strategies employed by Sulfitobacter sp. TCYB15 in hydrothermal environments.

Keyword :

Deep-sea hydrothermal Deep-sea hydrothermal Environmental adaptation Environmental adaptation Quorum sensing Quorum sensing Sulfitobacter sp. Sulfitobacter sp. Sulfur metabolism Sulfur metabolism

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GB/T 7714 Deng, Yadan , Zhu, Yunjin , He, Jiaxuan et al. Complete genome analysis of deep-sea hydrothermal sulfur-oxidizing bacterium Sulfitobacter sp. TCYB15 associated with mussel Bathymodiolus marisindicus and insights into its habitat adaptation [J]. | MARINE GENOMICS , 2024 , 78 .
MLA Deng, Yadan et al. "Complete genome analysis of deep-sea hydrothermal sulfur-oxidizing bacterium Sulfitobacter sp. TCYB15 associated with mussel Bathymodiolus marisindicus and insights into its habitat adaptation" . | MARINE GENOMICS 78 (2024) .
APA Deng, Yadan , Zhu, Yunjin , He, Jiaxuan , Yin, Xin , Li, Qian , Chen, Zhengxing et al. Complete genome analysis of deep-sea hydrothermal sulfur-oxidizing bacterium Sulfitobacter sp. TCYB15 associated with mussel Bathymodiolus marisindicus and insights into its habitat adaptation . | MARINE GENOMICS , 2024 , 78 .
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Complete genome analysis of deep-sea hydrothermal sulfur-oxidizing bacterium Sulfitobacter sp. TCYB15 associated with mussel Bathymodiolus marisindicus and insights into its habitat adaptation Scopus
期刊论文 | 2024 , 78 | Marine Genomics
A Study of {10-12} Twinning Activity Associated with Stress State in Mg-3Al-1Zn Alloy during Compression SCIE
期刊论文 | 2024 , 14 (5) | METALS
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Abstract :

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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A Study of {10-12} Twinning Activity Associated with Stress State in Mg-3Al-1Zn Alloy during Compression Scopus
期刊论文 | 2024 , 14 (5) | Metals
Effects of Hf addition on the microstructure and properties of Cu-Sn-P alloy SCIE
期刊论文 | 2024 , 33 , 2981-2988 | JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
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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 Sigma 3n (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.

Keyword :

Cu-Sn-P Cu-Sn-P Electrical conductivity Electrical conductivity Hf element Hf element Mechanical properties Mechanical properties Microstructure Microstructure

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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-JMR&T , 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-JMR&T 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-JMR&T , 2024 , 33 , 2981-2988 .
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Effects of Hf addition on the microstructure and properties of Cu-Sn-P alloy EI
期刊论文 | 2024 , 33 , 2981-2988 | Journal of Materials Research and Technology
Effects of Hf addition on the microstructure and properties of Cu-Sn-P alloy Scopus
期刊论文 | 2024 , 33 , 2981-2988 | Journal of Materials Research and Technology
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