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学者姓名：杜文博
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Abstract ：
This study investigates the thermal conduction behavior of Mg-8Gd-1Er-xZn-1Mn (x = 4, 6, 8 wt%) alloys with varying Zn content. The results indicate that the as-cast alloys contain only the W-phase, and its volume fraction increases with the Zn content rises. After rolling, the block-like W-phase is fractured, and a substantial number of fine W-phase and alpha-Mn phase precipitates in the GEZM8181 alloy. The thermal conductivity of the as-rolled GEZM8141, GEZM8161, and GEZM8181 alloys are 79.6 W/(m center dot K), 112.1 W/(m center dot K), and 131.0 W/(m center dot K), respectively. The quantitative analysis of the microstructural factors contributing to the reduction in thermal conductivity reveals that solute atoms have the most significant impact on thermal conductivity, and their effect gradually weakens with increasing Zn content. For the deformed Mg-8Gd-1Er-xZn-1Mn alloys, the factors contributing to the reduction in thermal conductivity can be ranked in the following order: solute atom > secondary phase > grain boundary > dislocation. This demonstrates that optimizing the proportion of solute atoms and secondary phases in the Mg matrix is essential for designing high-thermal-conductivity magnesium alloys. These findings provide valuable insights for understanding the thermal conduction behavior of Mg-RE series alloys.
Keyword ：
Thermal conductivity Thermal conductivity Mg-RE alloy Mg-RE alloy W -phase W -phase Rolling Rolling Precipitates Precipitates
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| GB/T 7714 | Li, Xudong , Wang, Tong , Du, Wenbo et al. Unveiling the roles of Zn content on the thermal conductivity of Mg-8Gd-1Er-xZn-1Mn alloys [J]. | JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T , 2025 , 35 : 6804-6813 . |
| MLA | Li, Xudong et al. "Unveiling the roles of Zn content on the thermal conductivity of Mg-8Gd-1Er-xZn-1Mn alloys" . | JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T 35 (2025) : 6804-6813 . |
| APA | Li, Xudong , Wang, Tong , Du, Wenbo , Lou, Feng , Ren, Jianlong , Du, Xian et al. Unveiling the roles of Zn content on the thermal conductivity of Mg-8Gd-1Er-xZn-1Mn alloys . | JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T , 2025 , 35 , 6804-6813 . |
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Abstract ：
In this work, we distinctly emphasize the critical roles of morphologies of second phases in determining corrosion behaviors in biodegradable Mg-xZn-0.2Mn-0.2Ca (MX-xZn, x = 1, 2, 3 and 4, wt%) alloys. We found that spherical-shaped Ca2Mg6Zn3 phases in MX-1Zn alloys, with their higher Volta potential, initially caused shallow pits formation by preferentially corroding and detaching from the matrix. Conversely, island-shaped Ca2Mg6Zn3 phases in other alloys accelerated corrosion rates significantly by forming corrosion channels, leading to extensive pits formation along grain boundaries over prolonged immersion periods. Prolonged immersion tests (14 days) demonstrated that these grain boundary networks underwent severe structural degradation, ultimately leading to phase detachment and the creation of deep corrosion cavities at boundary regions. The descending order of corrosion resistance was quantitatively established as: MX-1Zn > MX-2Zn > MX-3Zn > MX-4Zn. The in vivo biocompatibility assessments confirmed that MX-1Zn alloy implants exhibited no adverse histological effects on hepatic and renal tissues in animal models.
Keyword ：
In vivo biocompatibility In vivo biocompatibility Biodegradation Biodegradation Intermetallics Intermetallics SVET SVET Mg-Zn-Mn-Ca alloys Mg-Zn-Mn-Ca alloys
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| GB/T 7714 | Liu, Ke , Fu, Junjian , Liang, Hongxing et al. Elucidating the dominant role of second phase morphology in corrosion behavior of biodegradable Mg-Zn-Mn-Ca alloys [J]. | JOURNAL OF ALLOYS AND COMPOUNDS , 2025 , 1020 . |
| MLA | Liu, Ke et al. "Elucidating the dominant role of second phase morphology in corrosion behavior of biodegradable Mg-Zn-Mn-Ca alloys" . | JOURNAL OF ALLOYS AND COMPOUNDS 1020 (2025) . |
| APA | Liu, Ke , Fu, Junjian , Liang, Hongxing , Li, Shubo , Du, Xian , Zhang, Yulin et al. Elucidating the dominant role of second phase morphology in corrosion behavior of biodegradable Mg-Zn-Mn-Ca alloys . | JOURNAL OF ALLOYS AND COMPOUNDS , 2025 , 1020 . |
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Abstract ：
Hot deformation with high strain rate has been paid more attention due to its high efficiency and low cost, however, the strain rate dependent dynamic recrystallization (DRX) and texture evolution in hot deformation process, which affect the formability of metals, are lack of study. In this work, the DRX behavior and texture evolution of Mg-8Gd-1Er-0.5Zr alloy hot compressed with strain rates of 0.1 s-1, 1 s-1, 10 s-1 and 50 s-1are studied, and the corresponding dominant mechanisms for DRX and texture weakening are discussed. Results indicated the DRX fraction was 20% and the whole texture intensity was 16.89 MRD when the strain rate was 0.1 s-1, but they were 76% and 6.55 MRD, respectively, when the strain rate increased to 50 s-1. The increment of DRX fraction is suggested to result from the reduced DRX critical strain and the increased dislocation density as well as velocity, while the weakened whole texture is attributed to the increased DRX grains. At the low strain rate of 0.1 s-1, discontinuous DRX (DDRX) was the dominant, but the whole texture was controlled by the deformed grains with the preferred orientation of {0001}perpendicular to CD, because the number of DDRX grains was limited. At the high strain rate of 50 s-1, continuous DRX (CDRX) and twin-induced DRX (TDRX) were promoted, and more DRX grains resulted in orientation randomization. The whole texture was mainly weakened by CDRX and TDRX grains, in which CDRX plays a major role. The results of present work are significant for understanding the hot workability of Mg-RE alloys with a high strain rate. (c) 2023 Chongqing University. Publishing services provided by Elsevier B.V. on behalf of KeAi Communications Co. Ltd. This is an open access article under the CC BY-NC-ND license ( http://creativecommons.org/licenses/by-nc-nd/4.0/) Peer review under responsibility of Chongqing University
Keyword ：
Texture Texture Strain rate Strain rate Dynamic recrystallization Dynamic recrystallization Hot compression Hot compression Mg-Gd-Er-Zr alloy. Mg-Gd-Er-Zr alloy.
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| GB/T 7714 | Ding, Ning , Du, Wenbo , Li, Shubo et al. Strain rate dependence of dynamic recrystallization and texture evolution in hot compressed Mg-Gd-Er-Zr alloy [J]. | JOURNAL OF MAGNESIUM AND ALLOYS , 2025 , 13 (1) : 161-171 . |
| MLA | Ding, Ning et al. "Strain rate dependence of dynamic recrystallization and texture evolution in hot compressed Mg-Gd-Er-Zr alloy" . | JOURNAL OF MAGNESIUM AND ALLOYS 13 . 1 (2025) : 161-171 . |
| APA | Ding, Ning , Du, Wenbo , Li, Shubo , Liu, Ke , Du, Xian , Yu, Zijian . Strain rate dependence of dynamic recrystallization and texture evolution in hot compressed Mg-Gd-Er-Zr alloy . | JOURNAL OF MAGNESIUM AND ALLOYS , 2025 , 13 (1) , 161-171 . |
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Abstract ：
This study targets the optimization of anode materials for primary magnesium-air batteries by utilizing the Mg2Zn-0.2Ca alloy which contains only Ca 2 Mg 6 Zn 3 second phase. The findings underscore the capacity of heat treatment to fine-tune grain sizes and second phases, exerting a direct impact on the electrochemical characteristics and discharge responses of these anodes. By adjusting the parameters of the homogenization process, alloys with similar grain sizes but differing in the content and distribution of the second phase were obtained. Based on this, the relationship between properties of second phase and discharge behavior was investigated. Results show that after homogenizing at 400 degrees C for 12 h, the alloy with optimized second phase content exhibits enhanced discharge performance with an anodic utilization efficiency value of 65.3 % (at 10 mA cm -2 ), a discharge capacity value of 1438.8 mAh g -1 (at 10 mA cm -2 ) and a specific energy value of 2142.9 mWh g -1 (at 1 mA cm -2 ). Moreover, the discharge mechanism is analyzed, and the results reveal that during the early stages of discharging, the discharge reaction selectively unfolds in the matrix surrounding the Ca 2 Mg 6 Zn 3 second phases. This research provides meaningful information for designing high-performance, low-cost alloy anodes for primary Mg-air batteries.
Keyword ：
Discharge performances Discharge performances Mg-air batteries Mg-air batteries Mg-Zn-Ca alloys Mg-Zn-Ca alloys Heat treatment Heat treatment Second phase Second phase
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| GB/T 7714 | Li, Shubo , Li, Xuening , Zhao, Chenchen et al. Boosting the performance of primary Mg-air battery by regulating the second phase in the Mg-2Zn-0.2Ca anode [J]. | JOURNAL OF ENERGY STORAGE , 2024 , 94 . |
| MLA | Li, Shubo et al. "Boosting the performance of primary Mg-air battery by regulating the second phase in the Mg-2Zn-0.2Ca anode" . | JOURNAL OF ENERGY STORAGE 94 (2024) . |
| APA | Li, Shubo , Li, Xuening , Zhao, Chenchen , Li, Han , Liang, Hongxing , Wang, Shuo et al. Boosting the performance of primary Mg-air battery by regulating the second phase in the Mg-2Zn-0.2Ca anode . | JOURNAL OF ENERGY STORAGE , 2024 , 94 . |
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Abstract ：
Surface etched graphene nanoplatelets (SEGs) were obtained by KOH etching of reduced graphene oxides, and the etching degree was controlled by KOH addition. Nano-sized pores with diameters mainly around 1 nm and 4 nm were created on the surface carbon layer of SEGs. During the composite preparation, the nanopores on SEGs provided nucleation sites and suppressed the growth of Mg crystal, which led to Mg nanograins. The mechanical deformation (hot extrusion) and nanocrystalline structures promoted Mg amorphization transition on the interface. The absorbed and residual oxygen on SEGs reacted with Mg into MgO nanoparticles. These nanoparticles (Mg nanograins, MgO nanograins and amorphous Mg) respectively had coherent, semi-coherent and incoherent interface with Mg matrix, which caused dislocations and lattice mismatch regions along the interface. The resulting heterogeneous interface of SEGs/nanoparticles/Mg matrix built a nano-micro hierarchical structure, which largely enhanced the strength and ductility of SEGs/ZK61 composites. The SEG-4/ZK61 composite exhibited optimum mechanical performance with yield strength of 236 MPa, ultimate tensile strength of 337 MPa, and especially elongation of 32 %. This work develops nanopore-modified graphene to reinforce Mg alloys, which might provide a design guideline for high performance metal matrix composites.
Keyword ：
Surface etching Surface etching Interface Interface Mechanical properties Mechanical properties Magnesium Magnesium Graphene Graphene
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| GB/T 7714 | Wu, Xuefeng , Du, Xian , Wang, Zhaohui et al. Surface etched graphene nanoplatelets and their heterogeneous interface to reinforce magnesium alloys for high strength and ductility [J]. | MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING , 2024 , 913 . |
| MLA | Wu, Xuefeng et al. "Surface etched graphene nanoplatelets and their heterogeneous interface to reinforce magnesium alloys for high strength and ductility" . | MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING 913 (2024) . |
| APA | Wu, Xuefeng , Du, Xian , Wang, Zhaohui , Li, Shubo , Liu, Ke , Du, Wenbo . Surface etched graphene nanoplatelets and their heterogeneous interface to reinforce magnesium alloys for high strength and ductility . | MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING , 2024 , 913 . |
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Abstract ：
The effect of carbon nanotubes (CNTs) on the aging behavior of Mg-9Al matrix composites was studied, and the evolution of microstructures, mechanical properties and thermal conductivity of composites during the aging treatment were discussed. Results show that the addition of CNTs increases the solid solubility of Al in Mg matrix and limited the migration of grain boundaries during the aging process, which can promote the formation of continuous precipitated phases beta-Mg17Al12 in CNTs/Mg-9Al composites. The rod-shaped continuous precipitates in coherent relationship with Mg matrix can effectively hinder the dislocation movement, which can improve the mechanical properties of the composites. Besides, the reduction of solid solution Al atoms during aging process and the addition of CNTs can improve the thermal conductivity of the composites. The property evaluation indicates that the tensile yield strength, ultimate tensile strength, diffusivity and thermal conductivity of peak-aged 0.4CNTs/Mg-9Al composite are 275 MPa, 369 MPa, 34.5 mm(2)/s and 68.4 W/(mmiddotK) respectively, showing 17%, 23%, 43% and 45% increasing in comparison with those of Mg-9Al before aging.
Keyword ：
mechanical property mechanical property thermal conductivity thermal conductivity aging treatment aging treatment CNTs CNTs magnesium matrix composites magnesium matrix composites
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| GB/T 7714 | Shubo, Li , Jiangtao, Hou , Fanjing, Meng et al. Microstructure, mechanical and thermal properties of CNTs/Mg-9Al composites [J]. | CAILIAO GONGCHENG-JOURNAL OF MATERIALS ENGINEERING , 2023 , 51 (1) : 26-35 . |
| MLA | Shubo, Li et al. "Microstructure, mechanical and thermal properties of CNTs/Mg-9Al composites" . | CAILIAO GONGCHENG-JOURNAL OF MATERIALS ENGINEERING 51 . 1 (2023) : 26-35 . |
| APA | Shubo, Li , Jiangtao, Hou , Fanjing, Meng , Ke, Liu , Zhaohui, Wang , Wenbo, Du . Microstructure, mechanical and thermal properties of CNTs/Mg-9Al composites . | CAILIAO GONGCHENG-JOURNAL OF MATERIALS ENGINEERING , 2023 , 51 (1) , 26-35 . |
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Abstract ：
研究了CNTs的加入对Mg-9 Al镁基复合材料时效行为的影响,探讨了时效处理过程中微观组织、力学性能及导热性能的演变规律.结果表明:添加的CNTs增大了基体合金中铝元素的固溶度,并在时效过程中限制晶界的迁移,在二者共同作用下,促进基体中连续β-Mg17 Al12相的析出,且随着CNTs含量的增加,连续析出的比例增大;与基体呈共格关系的杆状连续析出相能够有效地阻碍位错运动,提高复合材料的力学性能,其中峰时效态0.4CNTs/Mg-9Al复合材料的屈服强度、抗拉强度、热扩散系数和热导率分别为275 MPa,369 MPa,34.5 mm2/s和68.4 W/(m·K),相较于时效前Mg-9Al合金分别提升了17％,23％,43％和45％.
Keyword ：
时效处理 时效处理 碳纳米管 碳纳米管 镁基复合材料 镁基复合材料 力学性能 力学性能 热导率 热导率
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| GB/T 7714 | 李淑波 , 侯江涛 , 孟繁婧 et al. CNTs/Mg-9Al复合材料微观组织、力学及导热性能 [J]. | 材料工程 , 2023 , 51 (1) : 26-35 . |
| MLA | 李淑波 et al. "CNTs/Mg-9Al复合材料微观组织、力学及导热性能" . | 材料工程 51 . 1 (2023) : 26-35 . |
| APA | 李淑波 , 侯江涛 , 孟繁婧 , 刘轲 , 王朝辉 , 杜文博 . CNTs/Mg-9Al复合材料微观组织、力学及导热性能 . | 材料工程 , 2023 , 51 (1) , 26-35 . |
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Abstract ：
To accelerate the commercial application of rechargeable aqueous Zn-air batteries, it is essential to develop effective catalysts for oxygen evolution reaction (OER). This work reports a novel nanohybrid catalyst comprising amorphous B doped Fe-Ni bimetal hydroxide nano-sheets supported on multiwalled carbon nano -tubes for high-efficiency Zn-air batteries, which was synthesized via a facile ultrasonic-assisted BH4- fast reduction reaction. The as-constructed nano-complex with optimal composition exhibited outstanding activity and stability for the OER process, with an overpotential of 219.43 mV for 10 mA cm-2 and a Tafel slope of 43.1 mV dec- 1. A fabricated Zn-air battery delivered both excellent energy efficiency and high cycling stability, exhibiting a peak power density of 343.7 mW cm-2 and a favorable stability of over 200 h. The enhanced battery performance demonstrates the nanohybrid to be a promising candidate catalyst for Zn-air batteries with low-cost, high efficiency and long-term stability.
Keyword ：
Oxygen evolution reaction Oxygen evolution reaction B doping B doping FeNi hydroxide FeNi hydroxide Carbon nanotube Carbon nanotube Zn-air battery Zn-air battery
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| GB/T 7714 | Zhao, Chenchen , Jin, Yuhong , Yu, Zijian et al. B doped NiFe hydroxides/multiwalled carbon nanotube electrocatalysts toward oxygen evolution reaction for rechargeable Zn-air batteries [J]. | MATERIALS CHEMISTRY AND PHYSICS , 2023 , 295 . |
| MLA | Zhao, Chenchen et al. "B doped NiFe hydroxides/multiwalled carbon nanotube electrocatalysts toward oxygen evolution reaction for rechargeable Zn-air batteries" . | MATERIALS CHEMISTRY AND PHYSICS 295 (2023) . |
| APA | Zhao, Chenchen , Jin, Yuhong , Yu, Zijian , Li, Shubo , Meng, Fanjing , Yuan, Yanping et al. B doped NiFe hydroxides/multiwalled carbon nanotube electrocatalysts toward oxygen evolution reaction for rechargeable Zn-air batteries . | MATERIALS CHEMISTRY AND PHYSICS , 2023 , 295 . |
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| GB/T 7714 | Du, Baotian , Yu, Zijian , Shi, Kang et al. Improving the Mechanical Properties of Mg-Gd-Y-Ag-Zr Alloy via Pre-Strain and Two-Stage Ageing (vol 36, pg 456, 2023) [J]. | ACTA METALLURGICA SINICA-ENGLISH LETTERS , 2023 , 36 (9) : 1572-1572 . |
| MLA | Du, Baotian et al. "Improving the Mechanical Properties of Mg-Gd-Y-Ag-Zr Alloy via Pre-Strain and Two-Stage Ageing (vol 36, pg 456, 2023)" . | ACTA METALLURGICA SINICA-ENGLISH LETTERS 36 . 9 (2023) : 1572-1572 . |
| APA | Du, Baotian , Yu, Zijian , Shi, Kang , Liu, Ke , Li, Shubo , Du, Wenbo . Improving the Mechanical Properties of Mg-Gd-Y-Ag-Zr Alloy via Pre-Strain and Two-Stage Ageing (vol 36, pg 456, 2023) . | ACTA METALLURGICA SINICA-ENGLISH LETTERS , 2023 , 36 (9) , 1572-1572 . |
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Abstract ：
The lamellar and orientational characteristics of graphene nanoplatelets (GNPs) are crucial for reinforcing metal matrix composites, particularly in terms of their thermal properties. Two kinds of GNPs with plane sizes of 6 & mu;m and 80 & mu;m were respectively used as reinforcements in ZK60 alloy by powder metallurgy. The oriented distribution of GNPs in the matrix was obtained using a double-pass hot extrusion process, i.e., a stepped extrusion with two consecutive extrusion ratios (10:1 and 16:1). Reinforced with 0.05 wt% oriented GNPs (80 & mu;m), the composite exhibited a tensile yield strength of 257 MPa, ultimate tensile strength of 342 MPa, elongation of 24.7%, and notably enhanced thermal conductivity of 128.3 W (mK)(-1) even with refined grain size compared to the ZK60 alloy. The oriented GNPs in the matrix create a favorable path for efficient load and heat transfer, leading to the simultaneously enhancement of mechanical and thermal properties of the GNPs/ZK60 composites. This work is expected to broaden the application potential of GNPs as highly efficient reinforcements and provide a practical method for fabricating metal matrix composites.
Keyword ：
Magnesium Magnesium Mechanical properties Mechanical properties Thermal properties Thermal properties Orientation Orientation Graphene Graphene
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| GB/T 7714 | Zhu, Baohong , Du, Xian , Meng, Fanjing et al. Simultaneously Enhanced Thermal and Mechanical Properties of ZK60 Alloy Reinforced by Oriented Graphene Nanoplatelets [J]. | ACTA METALLURGICA SINICA-ENGLISH LETTERS , 2023 , 36 (12) : 1999-2012 . |
| MLA | Zhu, Baohong et al. "Simultaneously Enhanced Thermal and Mechanical Properties of ZK60 Alloy Reinforced by Oriented Graphene Nanoplatelets" . | ACTA METALLURGICA SINICA-ENGLISH LETTERS 36 . 12 (2023) : 1999-2012 . |
| APA | Zhu, Baohong , Du, Xian , Meng, Fanjing , Wu, Xuefeng , Liu, Ke , Li, Shubo et al. Simultaneously Enhanced Thermal and Mechanical Properties of ZK60 Alloy Reinforced by Oriented Graphene Nanoplatelets . | ACTA METALLURGICA SINICA-ENGLISH LETTERS , 2023 , 36 (12) , 1999-2012 . |
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