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学者姓名：杜文博
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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 ：
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 ：
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 ：
一种高强塑积耐腐蚀铜镍合金及其制备工艺，涉及铜镍合金耐腐蚀与强韧化领域。合金成分为27.0～31.0％的Ni，0.8～2.0％的Fe，0.5～1.5％的Mn，0.004～0.02％的Y，0.002～0.01％的Ce，余量为Cu。原材料经真空熔炼获得铸锭后，进行均匀化退火，经热轧和冷轧后获得铜镍合金管材或板材，冷轧后的管材或板材经最终热处理获得所需产品。本发明最终制备的铜镍合金板材或管材具有高强塑积及在含硫海水中低腐蚀速率的优越性能，可解决铜镍合金在使用过程中因强度、塑性差以及在含硫海水中耐腐蚀性差造成管材或板材失效、使用寿命缩短的相关问题，在海洋工程、舰艇舰船等领域具有应用前景。
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| GB/T 7714 | 王朝辉 , 龚妍 , 全泽鑫 et al. 一种高强塑积耐腐蚀铜镍合金及其制备工艺 : CN202310282637.3[P]. | 2023-03-21 . |
| MLA | 王朝辉 et al. "一种高强塑积耐腐蚀铜镍合金及其制备工艺" : CN202310282637.3. | 2023-03-21 . |
| APA | 王朝辉 , 龚妍 , 全泽鑫 , 杜文博 , 李淑波 , 刘轲 et al. 一种高强塑积耐腐蚀铜镍合金及其制备工艺 : CN202310282637.3. | 2023-03-21 . |
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Abstract ：
一种取向排列石墨烯增强镁基复合材料及其制备方法，涉及金属基复合材料制备领域，该方法在不破坏石墨烯结构且保证均匀分散的前提下，采用粉末冶金与多级连续热挤压结合的工艺实现石墨烯在镁基体中的取向排列，利用石墨烯沿片层方向超高的热导率，大幅度提升镁基复合材料的导热性能，在解决石墨烯取向性差问题的同时也提高了复合材料的力学性能。本发明的复合材料具有轻质、高强、高导热特点，且操作简便、环境友好，在航空航天、汽车、3C等对石墨烯增强镁基复合材料有导热与力学性能需求的领域具有广阔的应用前景。
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| GB/T 7714 | 杜文博 , 朱保洪 , 杜宪 et al. 一种取向排列石墨烯增强镁基复合材料及其制备方法 : CN202310207917.8[P]. | 2023-03-03 . |
| MLA | 杜文博 et al. "一种取向排列石墨烯增强镁基复合材料及其制备方法" : CN202310207917.8. | 2023-03-03 . |
| APA | 杜文博 , 朱保洪 , 杜宪 , 刘轲 , 李淑波 . 一种取向排列石墨烯增强镁基复合材料及其制备方法 : CN202310207917.8. | 2023-03-03 . |
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Abstract ：
一种引线框架用Cu‑Ni‑Si合金材料及其制备方法，涉及引线框架用铜合金加工技术领域。所述材料成分为：Ni 2.4％，Si 0.6％，Mg 0.2％，Zn 0.01％，其余为铜及不可避免的杂质。该制备方法包括如下步骤：熔炼→热轧→软化退火→一次冷轧→固溶→二次冷轧→一级时效热处理→二级时效热处理→成品轧制→拉弯矫直→去应力退火。本发明通过控制带材二级时效热处理温度，获得了含有细小弥散分布的Ni2Si及Ni3Si2相的微观组织，有效提高了合金强度。
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| GB/T 7714 | 王朝辉 , 艾鑫宇 , 杜文博 et al. 一种引线框架用Cu-Ni-Si合金材料及其制备方法 : CN202310465955.3[P]. | 2023-04-26 . |
| MLA | 王朝辉 et al. "一种引线框架用Cu-Ni-Si合金材料及其制备方法" : CN202310465955.3. | 2023-04-26 . |
| APA | 王朝辉 , 艾鑫宇 , 杜文博 , 李淑波 , 刘轲 , 杜宪 . 一种引线框架用Cu-Ni-Si合金材料及其制备方法 : CN202310465955.3. | 2023-04-26 . |
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Abstract ：
一种带二次挤压成形的铜合金薄壁壳形件的半固态触变成形模具，属于半固态成形设备领域。主要包括挤压筒部分、上模部分和下模部分，其中挤压筒部分由挤压冲头、隔热板、挤压筒、加热/保温装置组成，上模由凹模、限位装置、隔热套组成，下模部分由凸模、二次挤压冲头、隔热板组成。凹模和凸模开若干个加热孔，凹模连接限位装置。本发明模具设计有二级挤压冲头，在挤压冲头完成合金的充型后，利用二次挤压冲头向上运动，实现对型腔内的坯料二次挤压成形，使得零部件的成形更加充分，同时有效地解决了成形件冷却时的补缩问题。整套模具结构简单，成形效率高，废料少，可大幅提升产品的良品率并降低了生产成本。
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| GB/T 7714 | 王朝辉 , 张佳缘 , 杜文博 et al. 一种带二次挤压成形的铜合金薄壁壳形件的半固态触变成形模具 : CN202310208087.0[P]. | 2023-03-05 . |
| MLA | 王朝辉 et al. "一种带二次挤压成形的铜合金薄壁壳形件的半固态触变成形模具" : CN202310208087.0. | 2023-03-05 . |
| APA | 王朝辉 , 张佳缘 , 杜文博 , 李淑波 , 刘轲 , 杜宪 . 一种带二次挤压成形的铜合金薄壁壳形件的半固态触变成形模具 : CN202310208087.0. | 2023-03-05 . |
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Abstract ：
一种镁空气电池负极材料Mg‑Zn‑Er合金及其制备方法和应用，涉及镁空气电池领域。合金成分为：Zn 0.6～20.0wt％，Er 0.1～3.5wt％，10≥Zn/Er≥6，其余为镁。制备方法包括如下步骤：(1)取商用纯镁，纯锌，Mg‑Er中间合金，掉表面的氧化皮；(2)将处理好的材料预热，并依次放入坩埚内熔化；(3)将熔液浇铸在模具中，冷却得到铸件。本发明通过控制Zn与Er的质量比，获得含有准晶I相Mg3Zn6Er1的微观组织，有效抑制了镁负极在水系电解液溶液中的析氢反应，并加速了产物的脱落，减少了放电产物在负极表面的堆积厚度，提升了镁空气电池的性能。
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| GB/T 7714 | 李淑波 , 张俪姝 , 赵晨辰 et al. 一种镁空气电池负极材料Mg-Zn-Er合金及其制备方法和应用 : CN202310022980.4[P]. | 2023-01-08 . |
| MLA | 李淑波 et al. "一种镁空气电池负极材料Mg-Zn-Er合金及其制备方法和应用" : CN202310022980.4. | 2023-01-08 . |
| APA | 李淑波 , 张俪姝 , 赵晨辰 , 杜文博 , 王朝辉 , 刘轲 et al. 一种镁空气电池负极材料Mg-Zn-Er合金及其制备方法和应用 : CN202310022980.4. | 2023-01-08 . |
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