Article
Materials Science, Multidisciplinary
Chunquan Liu, Xianhua Chen, Yaobo Hu, Wei Zhang, Yusheng Zhang, Jianbo Li, Fusheng Pan
Summary: This study prepares a gradient ultrafine-grained structure on the surface of a magnesium alloy using sliding friction treatment. The new material exhibits significantly improved yield strength and excellent ductility compared to homogeneous structures. Transmission electron microscopy and electron backscatter diffraction analyses reveal that the refined grain structure and grain orientation modification contribute to the enhanced plastic deformation ability.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2022)
Article
Chemistry, Physical
Fei Liu, Zhiyi Liu, Guangyu He
Summary: The microstructure evolution and its effect on the strength properties and fatigue performance of the Al-Cu-Mg alloy have been investigated. The results show that refining Goss-oriented grains can improve the strength-ductility trade-off and reduce the fatigue crack propagation rate.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Materials Science, Multidisciplinary
Quanfeng Han, Jingli Li, Xin Yi
Summary: By utilizing texture engineering and gradient microstructure design, incorporating grain boundary strengthening, a more desirable strength-ductility synergy can be achieved in nanocrystalline (NC) metals.
JOURNAL OF THE MECHANICS AND PHYSICS OF SOLIDS
(2023)
Article
Nanoscience & Nanotechnology
Zhibo Liu, Jiani Sun, Zhigang Yan, Yaojun Lin, Manping Liu, Hans J. Roven, Arne K. Dahle
Summary: This study focuses on improving the ductility of a cast Al-10 wt%Mg alloy by prolonging time and/or increasing temperature during solid-solution treatment to minimize the amount of the brittle Al3Mg2 phase. The amounts of Al3Mg2 decrease and the concentrations of solute Mg increase with prolonging time and/or increasing temperature, resulting in improved ductility and strength. Complete dissolution of the Al3Mg2 phase is achieved through solid-solution treatment at specific temperatures, leading to significant improvements in both ductility and strength.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2021)
Article
Chemistry, Physical
Yabo Fu, Haonan Chen, Renqing Guo, Yuanding Huang, Mohammad Reza Toroghinejad
Summary: The study investigated the microstructure and mechanical properties of Zr-based alloys prepared by vacuum suction-cast, revealing that the alloy with gradient amorphous structure exhibited exceptional strength and ductility, with a maximum compressive strength of 1811.7 MPa and a plastic strain of 23.6%. The enhancement of strength was attributed to the presence of nanoscaled amorphous particles, oxide nanoparticles, and the toughening phase CuZr in the alloy.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Nanoscience & Nanotechnology
Wei Zhang, Zhichao Ma, Hongwei Zhao, Luquan Ren
Summary: Simultaneous strength-ductility enhancement of a high-entropy alloy via cold rolling and annealing is challenging. The grain size decreased significantly and the yield strength dramatically increased while maintaining excellent ductility, attributed to grain refinement and substantial annealing twins.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2021)
Article
Nanoscience & Nanotechnology
Wei Zhang, Zhichao Ma, Hongwei Zhao, Luquan Ren
Summary: This study investigated the mechanical properties and deformation mechanisms of as-cast and cold rolled-annealed high-entropy alloy samples. The cold-rolled and annealed sample showed higher yield strength, ultimate strength, and good ductility compared to the as-cast sample. The RA sample exhibited significant changes in grain size, phase volume fraction, and dislocation walls.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2022)
Article
Nanoscience & Nanotechnology
P. C. Han, N. R. Tao
Summary: Deformation and annealing were combined to optimize the mechanical properties of metallic materials. The study found that there were differences in the strength-ductility trade-off between the dynamic plastic deformation-induced structures and annealed structures in Cu and Cu-4.5Al alloy. It was suggested that high performance metallic materials can be obtained by just one-step plastic deformation without subsequent annealing treatment.
SCRIPTA MATERIALIA
(2022)
Article
Nanoscience & Nanotechnology
Xiaoru Zhuo, Liyan Zhao, Huan Liu, Yanxin Qiao, Jinghua Jiang, Aibin Ma
Summary: In this study, a high-strength and high-ductility Zn-Ag alloy was successfully achieved by adding trace magnesium (0.08 wt%) and utilizing equal channel angular pressing (ECAP) technique. The ECAP processed Zn-2.5Ag-0.08Mg alloy exhibited significantly high ultimate tensile strength (UTS) of 393.1 MPa and elongation (EL) of 56.3%, surpassing the application benchmark. The addition of magnesium suppressed grain boundary sliding, delayed the inverse Hall-Petch relation, and resulted in very fine grains (1.23 μm). Grain boundary strengthening was identified as the dominant strengthening mechanism, and high ductility was attributed to the suppression of deformation twinning, activation of pyramidal slip, and low dislocation density.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2023)
Article
Nanoscience & Nanotechnology
Xiuzhen Zhang, Dengshan Zhou, Yue Li, Deliang Zhang
Summary: In this study, dynamic strain aging and dynamic precipitation were combined through simple pre-deformation to increase the flow stress and strain hardening rate of a high Mg-content Al-Mg-Zn based crossover alloy. The experimental results showed significant improvement in both yield strength and ultimate tensile strength, while maintaining excellent ductility.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2022)
Article
Metallurgy & Metallurgical Engineering
Qinghui Zhang, Jianguo Li, Kun Jiang, Pu Li, Yusheng Li, Yong Zhang, Tao Suo
Summary: This study investigates the effect of gradient structure on deformation twin evolution and resulting performance improvements. The experiment was conducted using a gradient-structured magnesium alloy. The results show that the architected alloy exhibits simultaneous enhancement of strength and ductility, which is attributed to abundant twin-twin interactions contributing to increased work-hardening capability.
JOURNAL OF MAGNESIUM AND ALLOYS
(2023)
Article
Nanoscience & Nanotechnology
Xinbiao Wang, Yaojun Lin, Zhibo Liu, Shengfa Liu
Summary: This research aims to reduce the amount and size of Al-Mg intermetallic phases by rapid solidification and improve the strength and ductility of a cast Al-15 wt% Mg alloy. The results show that the alloy processed by twin-roll casting (TRC) has refined Al grains and refined granular Al3Mg2 particles, as well as increased Mg solid solubility and decreased amount of Al3Mg2 phase. The TRC Al-15 wt% alloy exhibits higher yield strength, ultimate tensile strength, and uniform elongation compared to the conventionally mold cast counterpart.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2022)
Article
Materials Science, Multidisciplinary
Mengxian Zhang, Leichen Jia, Zhimin Zhang, Yong Xue
Summary: A cup-shaped Mg-Gd-Y-Zr alloy component was successfully prepared using the RBE technique, and the microstructure evolution and mechanical properties along the radial direction were studied. The grain refinement effect increased from the edge side to the inner side, and dynamic recrystallization occurred. The inner region exhibited the most excellent comprehensive mechanical properties.
Article
Materials Science, Multidisciplinary
Leijie Zhao, Lifeng Ma, Tingzhuang Han, Gaowu Qin, Hua Duan, Zhenbo Zhao
Summary: The high strength-ductility balance of Mg alloy sheet was achieved through rolling and annealing process, resulting in a transformation from strong basal texture to weak texture, finer grain structure, and improved elongation rate.
Article
Metallurgy & Metallurgical Engineering
Sang-Cheol Jin, Jae Won Cha, Jun Ho Bae, Hui Yu, Sung Hyuk Park
Summary: The effects of Al addition to a Mg-Bi binary alloy on its microstructural characteristics and tensile properties after extrusion were investigated. The addition of Al negligibly affected the second-phase particles of the extruded alloy, but caused significant decreases in the average grain size and maximum texture intensity. The Al addition improved the strength and ductility of the extruded alloy, with a substantial increase in tensile elongation.
JOURNAL OF MAGNESIUM AND ALLOYS
(2022)
Article
Nanoscience & Nanotechnology
Jiapeng Sun, Bangjun Li, Jie Yuan, Xiankai Li, Bingqian Xu, Zhenquan Yang, Jing Han, Jinghua Jiang, Guosong Wu, Aibin Ma
Summary: Developing wrought Mg alloys with excellent mechanical properties, such as an Mg-5.7Gd-1.9Ag wt. % alloy sheet, is crucial for extending Mg alloys' applications. The microstructure of the alloy showed a multiphase precipitate microstructure responsible for the strong aging response, with a suppressed stage II of strain hardening observed in the rolled and aged alloy.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2021)
Article
Chemistry, Physical
Jiapeng Sun, Bingqian Xu, Zhenquan Yang, Jing Han, Ningning Liang, Ying Han, Jinghua Jiang, Aibin Ma, Guosong Wu
Summary: This study successfully improves the strength, ductility, and corrosion resistance of Mg-13Al alloy by implementing a concept called hierarchical precipitate embedded fine grain microstructure. The enhancement of mechanical properties is mainly attributed to the synergistic effect of fully recrystallized fine grains and hierarchical beta phase precipitates.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Materials Science, Multidisciplinary
Ye Wang, Guosong Wu, Chao Xu, Zhenquan Yang, Jiapeng Sun
Summary: The study proposed the use of magnesium alloys for rebars in concretes for energy-saving design, and found that AZ80 alloy has excellent corrosion resistance in simulated concrete pore solution. However, the corrosion resistance deteriorates significantly when chloride ions are introduced.
Article
Instruments & Instrumentation
Ye Wang, Guosong Wu
Summary: A simple and eco-friendly chemical deposition process was proposed to improve the corrosion resistance of magnesium-neodymium alloys in this study. The treated samples showed good corrosion resistance in simulated concrete pore solutions, indicating a possible way to enhance the corrosion resistance of magnesium alloys in building engineering applications.
Article
Materials Science, Multidisciplinary
Bingqian Xu, Jiapeng Sun, Jing Han, Zhenquan Yang, Hao Zhou, Lirong Xiao, Songsong Xu, Ying Han, Aibin Ma, Guosong Wu
Summary: Hierarchical precipitates composed of various phases in a fine-grain magnesium-gadolinium-silver alloy obtained through ECAP and subsequent peak-aging process facilitate corrosion to some extent, but their spatial redistribution improves the material's corrosion resistance possibly due to the formation of a protective corrosion product film.
Article
Engineering, Mechanical
Xiangru Shi, Yunjia Shi, Jian Chen, Tomasz W. Liskiewicz, Ben D. Beake, Zehua Zhou, Zehua Wang, Guosong Wu
Summary: Structural design is essential to enhance the service performance of amorphous carbon films in aggressive environments. The study focused on multilayer graphite-like carbon films with different gradient interlayer thicknesses and revealed that mechanical properties and bonding strength decrease as the gradient interlayer thickness increases, leading to reduced wear resistance.
Article
Chemistry, Physical
Ke Xi, Hao Wu, Chilou Zhou, Ziyang Qi, Kailong Yang, Ricky K. Y. Fu, Shu Xiao, Guosong Wu, Kejian Ding, Guohua Chen, Paul K. Chu
Summary: This study investigates the corrosion and wear resistance of micro-arc oxidation (MAO) coatings containing quasi-2D sericite microplates on 2024 aluminum alloy. The results show that the incorporation of sericite improves the corrosion resistance, with the best performance observed in the M-15 sample. The wear resistance of the MAO coating is also enhanced by the addition of sericite microplates.
APPLIED SURFACE SCIENCE
(2022)
Article
Materials Science, Multidisciplinary
Lian Hua, Jiapeng Sun, Guosong Wu
Summary: A facile strategy is proposed in this study to control the corrosion behavior of hydrothermally-treated magnesium-aluminum alloys, and aging treatment is attempted to modify their metallurgical microstructure. After hydrothermal treatment, both the unaged and the aged alloy have a layer of dense coating, but the aged alloy shows better corrosion resistance.
Article
Materials Science, Multidisciplinary
Xinran Yao, Yujie Yang, Minxing Zheng, Jinghong Wang, Changyang Liu, Jiapeng Sun, Guosong Wu
Summary: This study proposes a strategy to enhance the corrosion resistance of magnesium alloys by transforming corrosion products into protective coatings. By immersing a magnesium-neodymium alloy in potassium dihydrogen phosphate solution, a uniform MgHPO4·3H2O coating is formed, which significantly improves the corrosion resistance of the alloy.
MATERIALS TODAY COMMUNICATIONS
(2022)
Article
Chemistry, Physical
Bangjun Li, Jiapeng Sun, Bingqian Xu, Guosong Wu
Summary: This paper investigates the corrosion behavior of Mg-5.7Gd-1.9Ag alloy sheets in a salt solution. The results show that the rolled sheets exhibit better corrosion resistance compared to the as-cast sheets. Aging treatment decreases corrosion resistance, but it still remains higher than that of the as-cast sheets. The migration of corrosion is mainly influenced by the evolution of second phases rather than grain size and texture.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Physical
Qisheng Sun, Jiapeng Sun, Yantao Fu, Bingqian Xu, Ying Han, Jianqing Chen, Jing Han, Hao Wu, Guosong Wu
Summary: In this study, a thick GS surface layer with a thickness of 1.1 mm was successfully produced in Cu-38 wt.% Zn alloy using ultrasonic severe surface rolling technology. The results show that the volume fraction of the GS surface layer can be tailored to achieve a balance between strength and ductility in the alloy.
Article
Materials Science, Multidisciplinary
Jiapeng Sun, Qisheng Sun, Ying Liu, Bangjun Li, Zheng Zhang, Bingqian Xu, Songsong Xu, Ying Han, Yanxin Qiao, Jing Han, Guosong Wu, Paul K. Chu
Summary: The study investigates the use of ultrasonic severe surface rolling (USSR) to enhance the corrosion resistance of SLM 316L stainless steel, and finds that the USSR processed samples exhibit significant improvement in corrosion resistance, attributed to the unique gradient structure and chemically homogeneous and high-quality surface.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2022)
Article
Materials Science, Multidisciplinary
Changyang Liu, Jiapeng Sun, Guosong Wu
Summary: A simple solution-immersion method based on the concept of predesigned corrosion is developed to enhance the corrosion resistance of a magnesium-neodymium alloy, providing a feasible way to prepare a superhydrophobic surface on the alloy. The superhydrophobic surface exhibits self-cleaning behavior and good corrosion resistance in artificial hand sweat, offering new technical insights into the corrosion protection of magnesium alloys.
Article
Materials Science, Multidisciplinary
Qisheng Sun, Jiapeng Sun, Jing Han, Guosong Wu
Summary: Designing a gradient nanostructure is an effective strategy to strengthen commercial pure Ti without sacrificing ductility. This study investigates the corrosion behavior of GNS pure Ti in hydrochloric acid and finds that GNS pure Ti exhibits enhanced corrosion resistance and passivation ability due to high-density grain boundaries, dislocations, and a smooth surface.