Review
Metallurgy & Metallurgical Engineering
Yujin Nie, Jianwei Dai, Xuan Li, Xiaobo Zhang
Summary: Corrosion is a major drawback for the wide applications of Mg alloys, with attention being drawn to the corrosion behaviors of alloys with stacking fault or long period stacking ordered structures. However, the corrosion mechanisms of these alloys remain unclear, calling for further research and improvement.
JOURNAL OF MAGNESIUM AND ALLOYS
(2021)
Article
Materials Science, Multidisciplinary
L. Zhang, H. Huang, S. J. Zhang, X. R. Liu
Summary: The study investigated the microstructure, mechanical properties, and tribological behavior of as-cast Mg-Y-Cu alloys. Results showed that increasing Y and Cu contents improved the tensile strength and hardness, while the friction coefficient and wear rate varied with the alloy compositions. Mg(95.5)Y(3)Cu(1.5) alloy exhibited the lowest friction coefficient and the best wear resistance.
METALS AND MATERIALS INTERNATIONAL
(2021)
Article
Materials Science, Multidisciplinary
Lei Zhang, Shuaijie Zhang, Kangxin Ouyang, Yihuan Zhou, H. Huang, Pian Xu
Summary: The microstructure and mechanical properties of as-cast Mg-Er-Cu, Mg-Er-Ni, and Mg-Er-Zn alloys prepared by conventional ingot metallurgy have been studied. The 18R long period stacking ordered (LPSO) phases in all three alloys solidify directly from the melt. Differences exist in the tensile strength and ductility among the three alloys.
ADVANCED ENGINEERING MATERIALS
(2021)
Article
Materials Science, Multidisciplinary
L. D. Xu, S. J. Ding, X. C. Cai, Y. Wu, Z. J. Li, K. K. Wen, S. W. Xin, B. R. Sun, M. X. Huang, T. D. Shen
Summary: This study reveals the oxidation behavior of Mg-Y-Zn LPSO phase at different temperatures through analysis and calculations. The results show that Y2O3 is mainly formed at a low temperature, while MgO is preferentially formed at a high temperature. This study is of great importance for the development of oxidation-resistant LPSO-containing Mg alloys.
Article
Materials Science, Multidisciplinary
Jinshu Xie, Jinghuai Zhang, Zhi Zhang, Zijian Yu, Zhihao Xu, Ru Wang, Daqing Fang, Xiaobo Zhang, Xiaoru Zhang, Ruizhi Wu
Summary: Understanding the corrosion mechanism of magnesium (Mg) alloys and controlling the potential fluctuation are crucial for developing high-strength corrosion-resistant Mg alloys. This study reveals that the presence of different microstructures in Mg alloys can affect the corrosion rate and film formation. The structurally enhanced microstructure can reduce the potential fluctuation, leading to improved corrosion resistance.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2023)
Article
Materials Science, Multidisciplinary
Yongxin Ruan, Changrong Li, Yuping Ren, Xiaopan Wu, R. Schmid-Fetzer, Cuiping Guo, Zhenmin Du
Summary: The experimental investigation of phase equilibria involving the long-period stacking ordered phases including 14H, 18R and 10H in the Mg-rich corner of the Mg-Y-Zn system at 400 and 500 degrees C was conducted using various microscopy techniques. The stable phases and three-phase equilibrium relationships were confirmed, and guidance for alloy composition design was provided based on modified isothermal sections.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2021)
Article
Materials Science, Multidisciplinary
Qianqian Jin, Xiaohong Shao, Shijian Zheng, Yangtao Zhou, Bo Zhang, Xiuliang Ma
Summary: Understanding the interface structure between strengthening precipitates and matrix in alloys at the atomic level is crucial for tailoring the mechanical properties. High-resolution scanning transmission electron microscopy was used to study the semi-coherent interfaces in Mg-Zn-Y alloys, revealing unique features such as Shockley partial dislocations and dissociated structures. The interaction between dislocation arrays and solute atoms plays a key role in the stability and morphology of these interfaces, influencing the lateral growth of LPSO phases in Mg alloys.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2021)
Review
Materials Science, Multidisciplinary
Mohammad Saleh Geshani, Parastoo Mahmoud Kalayeh, Amir Hossein Asadi, Hamed Mirzadeh, Mehdi Malekan, Massoud Emamy
Summary: Due to their excellent mechanical properties, magnesium alloys with long-period stacking ordered (LPSO) structures have gained significant attention. This overview article reviews the atomic structures, formation mechanisms, transformations, and morphology of LPSO phases in various Mg-based systems, as well as the effects of thermomechanical processing and severe plastic deformation techniques on the grain refinement and dispersion of LPSO phases. Furthermore, the application of friction stir processing and friction stir welding for LPSO-containing Mg alloys in terms of microstructural evolution, mechanical properties, and strengthening mechanisms is critically discussed. Future suggestions include studying the kinetics of LPSO phase formation, exploring emerging processing technologies, evaluating processing parameters, characterizing recrystallization mechanisms, and investigating superplasticity during hot deformation of LPSO-containing Mg alloys.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Materials Science, Multidisciplinary
Xiaodong Yang, Baolong Liu, Xiaojie Zhou, Weiying Huang, Liwei Lu, Xianzheng Lu, Yaru Liu
Summary: This study compares the performance of Mg-5Gd-3Y-2Zn-0.5Zr alloy with Mg-5Gd-3Y-1Zn-0.5Zr alloy. It is found that increasing the Zn content can induce the formation of more LPSO phases but has a negative impact on workability.
JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE
(2023)
Article
Chemistry, Physical
Shuaijun Ding, Xuecheng Cai, Zhongjie Li, Lidong Xu, Kangkang Wen, Jian Song, Hongwei Cui, Hui Yu, Tongde Shen
Summary: This study introduces a novel hierarchical LPSO architecture for Mg-Y-Zn based alloys, featuring ultrafine grained LPSO matrix, discrete LPSO lath domains and in-situ Y-O-Si nano-dispersoids. The combination of high strength, thermal stability and low density makes these alloys suitable for advanced structural applications, showing potential for lightweight high-strength Mg alloys.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Physical
Wanpeng Li, Cuixiu Liu, Linlin Liu, Jacob C. Huang, Wei Sun
Summary: The study findings revealed that the excellent room temperature plasticity in LPSO phases is achieved through localized slip and atom segregation at the edges of the slip bands, disrupting the structure of Zn6Y8 atomic clusters.
Article
Metallurgy & Metallurgical Engineering
Cheng Liu, Qun Luo, Qin-Fen Gu, Qian Li, Kuo-Chih Chou
Summary: This study aims to experimentally determine the phase equilibria relationships of Mg-Ni-Y system, focusing on LPSOs, and establish a thermodynamic description. Four types of LPSOs are confirmed and their formation enthalpies are calculated. A new ternary compound, called tau phase, is observed for the first time, which is significant for the design of advanced magnesium-based alloys.
JOURNAL OF MAGNESIUM AND ALLOYS
(2022)
Article
Chemistry, Physical
Siqi Liu, Han Ma, Zhenghua Huang, Zhongming Zhang, Chunjie Xu, Xiao Li, Feng Chen, Zhiqiao Yan, Fengyu Kong, Anding Wang, Zhixiang Liu
Summary: The Mg-8Gd-4Y-1Zn-0.5Al alloy prepared by metal type casting was subjected to rolling or extrusion-rolling to obtain sheets, followed by aging treatment. The microstructures and mechanical properties of the sheets were analyzed. The optimal process was determined to be rolling at 793 K with a deformation of 70%, resulting in a sheet with fully dynamic recrystallized grains and strong basal texture. After aging treatment, the sheet exhibited good mechanical properties. The extruded sheets showed grain growth and texture change after rolling at 793 K with a 50% deformation. The 18R-LPSO structures in the sheets affected the mechanical properties. Anisotropy was observed in the mechanical properties of the extrusion-rolled sheet.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Materials Science, Multidisciplinary
Yiwen Chen, Mingdi Yu, Jingya Wang, Quan Li, Weisen Zheng, Jianbo Li, Xiaoqin Zeng
Summary: This study systematically investigates the atomic structures of the equilibrated 18R and 10H phases in Mg-Y-Al alloys and constructs a new thermodynamic model for the LPSO phase. It provides valuable insights into the formation mechanism of LPSO phases and guides the design of Mg-Y-Al alloys.
MATERIALS & DESIGN
(2023)
Article
Materials Science, Multidisciplinary
Jinshu Xie, Jinghuai Zhang, Zhi Zhang, Qiang Yang, Kai Guan, Yuying He, Ru Wang, Hao Zhang, Xin Qiu, Ruizhi Wu
Summary: Formation of solute-enriched stacking faults (SESFs) and their transformation into long period stacking ordered (LPSO) phase in Mg alloys have been achieved in this study. The role and advantages of SESFs and LPSO phase were confirmed by experimental observations. These findings are significant for the development of high-strength and anti-corrosion Mg alloys.
Article
Chemistry, Physical
S. W. Xin, X. Shen, C. C. Du, J. Zhao, B. R. Sun, H. X. Xue, T. T. Yang, X. C. Cai, T. D. Shen
Summary: Bulk nanocrystalline boron-doped high entropy alloys with ultrahigh hardness and strength were fabricated, mainly attributed to solid solution, precipitation, grain boundary, and dislocation strengthening mechanisms. The high resistivity was related to the high volume fractions of grain boundaries and phase interfaces, point defects and dislocations near grain boundaries, and lattice distortions.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Physical
Xuecheng Cai, Shuaijun Ding, Zhongjie Li, Xin Zhang, Kangkang Wen, Lidong Xu, Yang Zhang, Yan Peng, Tongde Shen
Summary: Ti-Mg composites have been successfully fabricated by a novel high-pressure solid-state sintering technique, showing a fully dense microstructure and superior mechanical properties, demonstrating promising prospect for load-bearing implant applications.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Engineering, Multidisciplinary
Xuecheng Cai, Shuaijun Ding, Zhongjie Li, Xin Zhang, Kangkang Wen, Lidong Xu, Yang Zhang, Tongde Shen
Summary: This study successfully achieved the simultaneous sintering of magnesium and titanium using a novel high-pressure solid-state sintering technique. The relationship between microstructure and mechanical properties of the sintered Mg-Ti composites was analyzed, and it was found that the plasticity of the composites decreases as the titanium content increases. Additionally, the compressive yield strength of the composites increases with titanium content.
COMPOSITES PART B-ENGINEERING
(2021)
Article
Chemistry, Physical
Shuaijun Ding, Xuecheng Cai, Zhongjie Li, Lidong Xu, Kangkang Wen, Jian Song, Hongwei Cui, Hui Yu, Tongde Shen
Summary: This study introduces a novel hierarchical LPSO architecture for Mg-Y-Zn based alloys, featuring ultrafine grained LPSO matrix, discrete LPSO lath domains and in-situ Y-O-Si nano-dispersoids. The combination of high strength, thermal stability and low density makes these alloys suitable for advanced structural applications, showing potential for lightweight high-strength Mg alloys.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Materials Science, Ceramics
Xuecheng Cai, Shuaijun Ding, Kangkang Wen, Lidong Xu, Hengxu Xue, Shengwei Xin, Tongde Shen
Summary: The monolithic TiB2 undergoes rapid oxidation behavior at around 500 degrees C due to the formation of a bi-layer oxide scale, while at 650 degrees C, the oxide scale changes its structure and restores superior oxidation resistance. The configuration of the oxide scale is found to primarily determine the oxidation behavior of TiB2, which has been overlooked in previous studies.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2021)
Article
Materials Science, Multidisciplinary
Z. F. Wu, L. D. Xu, H. Q. Chen, Y. X. Liang, J. L. Du, Y. F. Wang, S. L. Zhang, X. C. Cai, B. R. Sun, J. Zhang, T. D. Shen, J. Wang, E. G. Fu
Summary: This study reports on a novel zirconium-doped nanocrystalline 14YWTZ ODS steel which exhibits high radiation tolerance. The high sink strength provided by grain boundaries effectively inhibits the aggregation of helium atoms and the growth of helium bubbles.
JOURNAL OF NUCLEAR MATERIALS
(2022)
Letter
Materials Science, Multidisciplinary
Shuai-Jun Ding, Li-Dong Xu, Xue-Cheng Cai, Shen-Xiang-Yu Gu, Kang-Kang Wen, Hui Yu, Zheng Chen, Bao-Ru Sun, Sheng-Wei Xin, Tong-De Shen
Article
Environmental Sciences
Grazyna Furgala-Selezniow, Malgorzata Jankun-Woznicka, Pawel Woznicki, Xuecheng Cai, Timea Erdei, Zsombor Boromisza
Summary: This paper presents the land use and land cover change processes in the lakeshore zone in Poland and Hungary during a 30-year period. Land use and land cover maps were prepared using topographic maps and orthophotograph maps scaled 1:10,000. The study utilized GIS data and field research. The results showed a significant increase in tourist and recreational infrastructure and forests in the lake shore zone in both countries. However, the increase occurred mainly at the expense of arable land in Poland and at the expense of semi-natural area in Hungary.
INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH
(2022)
Article
Nuclear Science & Technology
B. R. Sun, A. D. Zhou, Y. L. Li, Z. L. Zhang, C. C. Du, S. X. Y. Gu, Z. Chen, X. C. Cai, S. W. Xin, T. D. Shen
Summary: Novel ultrafine-grained hafnium-doped 9Cr ODS steels with high thermal stability and yield strength were successfully prepared, which could contribute to the design of more stable and mechanically robust materials for nuclear reactors.
NUCLEAR MATERIALS AND ENERGY
(2022)
Article
Materials Science, Multidisciplinary
H. X. Xue, X. C. Cai, B. R. Sun, X. Shen, C. C. Du, T. T. Yang, S. W. Xin, T. D. Shen
Summary: Bulk nanocrystalline W-Ti alloys with improved sinterability and superior mechanical properties were synthesized under high-temperature/high-pressure conditions, showing enhanced grain boundary strengthening compared to conventional W alloys.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2022)
Article
Materials Science, Multidisciplinary
L. D. Xu, S. J. Ding, X. C. Cai, Y. Wu, Z. J. Li, K. K. Wen, S. W. Xin, B. R. Sun, M. X. Huang, T. D. Shen
Summary: This study reveals the oxidation behavior of Mg-Y-Zn LPSO phase at different temperatures through analysis and calculations. The results show that Y2O3 is mainly formed at a low temperature, while MgO is preferentially formed at a high temperature. This study is of great importance for the development of oxidation-resistant LPSO-containing Mg alloys.
Article
Chemistry, Physical
Zhongjie Li, Hao Xu, Anping Dong, Xuecheng Cai, Lin He, Dafan Du, Hui Xing, Guoliang Zhu, Baode Sun
Summary: This work investigated the influence of grain morphology and crystallographic orientation on the mechanical anisotropy of a laser powder bed fusion produced Ti-41 Nb alloy. The study found that the horizontal samples had significantly higher compressive yield strength than the vertical samples. The easier activation of mechanical twins in columnar grains with a strong crystallographic orientation was identified as the main reason for the lower compressive yield strength of vertical samples. The study suggests that the anisotropy of the alloy can be utilized through simple position control and reasonable structural design.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Review
Ophthalmology
Xuecheng Cai, Nan Hong, Huiyan Li, Bo Jiang, Jianxia Fang, Jiechao Shao, Hui Liang, Ye Shen
Summary: This report presents a case of idiopathic hypertrophic cranial pachymeningitis (IHCP) with scleritis and optic disc involvement in a 56-year-old female patient. The patient complained of fever, headache, binocular pain, and redness. The diagnosis was confirmed through biochemical and immunological indicators, cranial magnetic resonance imaging, and relevant ophthalmological examinations. The patient showed improvement after receiving anti-infection and steroid therapy, highlighting the importance of considering IHCP with scleritis in differential diagnosis.
OCULAR IMMUNOLOGY AND INFLAMMATION
(2023)
Article
Materials Science, Multidisciplinary
Xun Shen, Shengwei Xin, Shuaijun Ding, Yu He, Weiguo Dong, Baoru Sun, Xuecheng Cai, Tongde Shen
Summary: VnbMoTaW is a promising refractory high-entropy alloy (RHEA) for elevated-temperature application, but its creep behavior is rarely studied. In this research, the compressive creep behaviors of an equiatomic VnbMoTaW RHEA were investigated. The results showed that the alloy exhibited a stable stress exponent at low temperatures and a stress-dependent transition behavior at high temperatures. These findings provide fundamental insights into the creep behavior and deformation mechanism of VnbMoTaW.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Nanoscience & Nanotechnology
Weiguo Dong, Shengwei Xin, Shuaijun Ding, Baoru Sun, Lidong Xu, Xun Shen, Zhaolan An, Guoying Liu, Longlong Ma, Xuecheng Cai, Tongde Shen
Summary: Dense nanocrystalline ReB2 bulks with high hardness and indentation fracture toughness have been synthesized, providing a promising strategy to enhance the mechanical properties of ceramics.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2023)
