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学者姓名：邓丽萍
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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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The microstructure of commercially pure titanium subjected to uniaxial compression was meticulously analyzed using electron backscattered diffraction (EBSD) to investigate the variant activation behavior of {11-22} twins and {10-12} twins. The results reveal that the type and number of activated twin variants are strongly dependent on the loading direction-whether applied along the normal direction (ND) or the rolling direction (RD). Notably, loading along ND can activate up to five twin variants, and most are activated with low Schmid Factor (SF) rank but high SF value. The variation in the number of activated twin variants within a grain is influenced by factors such as grain size, the activation stress of twinning versus slip, and the orientation of the loading direction relative to the c-axis. SF value for two twinning systems ({11-22} twins and {10-12} twins) were systematically calculated in pure titanium as a function of the angle between the c-axis and the loading direction, which indicates that compression along a direction closely aligned with the c-axis has the potential to activate up to six variants of {11-22} twins simultaneously. In contrast, compression perpendicular to the c-axis tends to activate fewer {10-12} twin variants, with the twinning activation being highly sensitive to the degree of c-axis rotation.
Keyword ：
EBSD EBSD Multiple-variants Multiple-variants Pure titanium Pure titanium Strain compatibility Strain compatibility Twinning Twinning
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| GB/T 7714 | Chen, Jingxian , An, Qiaojuan , Deng, Liping et al. Activation mechanism of multiple twin variants during uniaxial compression in pure titanium [J]. | JOURNAL OF ALLOYS AND COMPOUNDS , 2025 , 1024 . |
| MLA | Chen, Jingxian et al. "Activation mechanism of multiple twin variants during uniaxial compression in pure titanium" . | JOURNAL OF ALLOYS AND COMPOUNDS 1024 (2025) . |
| APA | Chen, Jingxian , An, Qiaojuan , Deng, Liping , Ye, Peng , Wang, Chen , Chen, Junfeng et al. Activation mechanism of multiple twin variants during uniaxial compression in pure titanium . | JOURNAL OF ALLOYS AND COMPOUNDS , 2025 , 1024 . |
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Ti6Al4V is widely utilized in orthopedic implants due to its excellent mechanical properties, corrosion resistance, and biocompatibility. However, traditional solid titanium implants exhibit an elastic modulus (90-115 GPa) significantly higher than that of human bone (10-30 GPa), leading to stress shielding and implant loosening. To address this, porous titanium alloys have been developed to better match bone elasticity. Additive manufacturing, particularly selective laser melting (SLM), enables precise control over pore size and porosity, thereby tuning mechanical properties. Nevertheless, SLM-produced porous structures often suffer from powder adhesion, which compromises bone integration and patient safety. In this study, bulk Ti6Al4V samples were fabricated via SLM with a fixed laser power of 200 W and varying scanning speeds (800-1400 mm/s). Density measurements and surface defect analysis identified 1200 mm/s as the optimal scanning speed. Cubic unit cell scaffolds with different pore diameters (400, 600, 800 mu m) and porosities (60%, 80%) were subsequently designed. Compression tests revealed that scaffolds with a 400 mu m pore diameter and 60% porosity exhibited the highest compressive strength (794 MPa) and fracture strain (41.35%). Chemical polishing using a diluted HF-HNO3 solution (1:2:97) effectively removed adhered powder without significant structural degradation, with 40 min identified as the optimal polishing duration.
Keyword ：
3D printing 3D printing chemical polishing chemical polishing mechanical properties mechanical properties porous titanium alloys porous titanium alloys selective laser melting (SLM) selective laser melting (SLM)
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| GB/T 7714 | Li, Tairong , Xu, Mengyu , Yao, Jinzhi et al. Preparation and Post-Processing of Three-Dimensional Printed Porous Titanium Alloys [J]. | MATERIALS , 2025 , 18 (8) . |
| MLA | Li, Tairong et al. "Preparation and Post-Processing of Three-Dimensional Printed Porous Titanium Alloys" . | MATERIALS 18 . 8 (2025) . |
| APA | Li, Tairong , Xu, Mengyu , Yao, Jinzhi , Deng, Liping , Wang, Bingshu . Preparation and Post-Processing of Three-Dimensional Printed Porous Titanium Alloys . | MATERIALS , 2025 , 18 (8) . |
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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 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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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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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.
Keyword ：
Gradient structure Gradient structure Mechanical properties Mechanical properties Pure copper Pure copper Texture evolution Texture evolution Torsion Torsion
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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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In this study, we investigated the annealing process of a cold-rolled dual-phase Mg-10Li-3Al-2.8Zn alloy and used the crystal defect strengthening model to explain the strengthening mechanism of the annealed Mg-Li alloy. To maximize the strength of the alloy, it is annealed at 553 K for 1 h and then water quenched. The maximum yield strength is 321 MPa and the ultimate tensile strength is 346 MPa. Compared with the cold -rolled alloy, the yield strength is increased by 145 MPa and the ultimate tensile strength is increased by 139 MPa. The high strength of annealed alloy is the result of solution strengthening, fine grain strength-ening, second phase strengthening and dislocation strengthening, in which solution strengthening con-tributes the most. The size, content and distribution of the second phase AlLi and MgLi2Al have significant effects on the strength of the alloy. Higher annealing temperature and rapid cooling are all conducive to the dissolution of AlLi in the matrix, lower temperature and rapid cooling are conducive to the solid solution of MgLi2Al, and higher on the contrary, MgLi2Al will be precipitated quickly at a high temperature. Hard AlLi and MgLi2Al both cause the strengthening of the second phase, but their strengthening effect are far less than that of the second phase solid solution in & beta;-Li. & COPY; 2023 Elsevier B.V. All rights reserved.
Keyword ：
Annealing process Annealing process Mechanical property Mechanical property Mg -Li alloy Mg -Li alloy Microstructure Microstructure Strengthening mechanism Strengthening mechanism
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| GB/T 7714 | Wang, Bingshu , Zhang, Yonggan , Deng, Liping et al. An investigation on annealing process and strengthening mechanism of cold rolled Mg-10Li-3Al-2.8Zn alloy [J]. | JOURNAL OF ALLOYS AND COMPOUNDS , 2023 , 961 . |
| MLA | Wang, Bingshu et al. "An investigation on annealing process and strengthening mechanism of cold rolled Mg-10Li-3Al-2.8Zn alloy" . | JOURNAL OF ALLOYS AND COMPOUNDS 961 (2023) . |
| APA | Wang, Bingshu , Zhang, Yonggan , Deng, Liping , Wang, Chen , Chen, Junfeng , Zhang, Yongjian . An investigation on annealing process and strengthening mechanism of cold rolled Mg-10Li-3Al-2.8Zn alloy . | JOURNAL OF ALLOYS AND COMPOUNDS , 2023 , 961 . |
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作为常用的金属材料,铜因强度较低而应用范围受限,石墨烯具有优异的综合性能,作为极具潜力的增强体而受到广泛关注.石墨烯增强铜基复合材料兼具了铜和石墨烯的优良性能而成为了重要的研究对象.介绍了石墨烯增强铜基复合材料的制备工艺与综合性能,重点讨论了各种制备工艺的特点、强化机制、构型设计,总结了针对复合界面结合弱与石墨烯分散困难这2类主要技术难点的解决途径,最后对石墨烯增强铜基复合材料的制备工艺进行了展望.
Keyword ：
制备工艺 制备工艺 强化机制 强化机制 构型设计 构型设计 石墨烯增强铜基复合材料 石墨烯增强铜基复合材料
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| GB/T 7714 | 潘信诚 , 林政淇 , 杨柳 et al. 石墨烯增强铜基复合材料制备工艺及性能的研究进展 [J]. | 机械工程材料 , 2023 , 47 (1) : 1-10 . |
| MLA | 潘信诚 et al. "石墨烯增强铜基复合材料制备工艺及性能的研究进展" . | 机械工程材料 47 . 1 (2023) : 1-10 . |
| APA | 潘信诚 , 林政淇 , 杨柳 , 邓丽萍 . 石墨烯增强铜基复合材料制备工艺及性能的研究进展 . | 机械工程材料 , 2023 , 47 (1) , 1-10 . |
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本工作系统研究多晶纯锡(99.99%)在不同轧制工艺下的显微组织演变和力学行为，阐明纯锡在不同轧制状态下晶粒细化规律，以期为调控与优化纯锡的强韧化奠定理论基础。研究结果表明，不同轧制工艺对纯锡的微观组织和力学性能影响明显，其中轧制速度是影响纯锡的晶粒细化和力学性能提升的最主要因素，温度、速度和路径通过调控变形过程中的孪晶激发以及孪晶诱导再结晶的进程而实现不同工艺下的晶粒细化。轧制过程晶粒细化机制为：变形初期诱发60°<100>形变孪晶，在后续变形过程中孪晶逐渐演变为再结晶条带状组织，分割细化晶粒，且孪晶和再结晶组织的随机取向弱化原始粗晶产生的集中织构。轧制变形能明显提高纯锡的强度，且单向轧制工艺下的纯锡样品的TD方向的屈服强度和抗拉强度明显高于RD方向。
Keyword ：
各向异性 各向异性 孪生 孪生 晶粒细化 晶粒细化 纯锡 纯锡 轧制 轧制
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| GB/T 7714 | 程桑 , 张勇敢 , 汪炳叔 et al. 不同轧制工艺对纯锡微观组织与性能的影响 [J]. | 稀有金属材料与工程 , 2023 , 52 (01) : 206-214 . |
| MLA | 程桑 et al. "不同轧制工艺对纯锡微观组织与性能的影响" . | 稀有金属材料与工程 52 . 01 (2023) : 206-214 . |
| APA | 程桑 , 张勇敢 , 汪炳叔 , 邓丽萍 , 周保雪 , 李强 . 不同轧制工艺对纯锡微观组织与性能的影响 . | 稀有金属材料与工程 , 2023 , 52 (01) , 206-214 . |
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