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
Nana Zhang, Mingming Liu, Quanan Li, Xiaoya Chen, Zeyu Zheng
Summary: The impact of the LPSO phase on dynamic recrystallization during backward extrusion process was studied. The results show that the 18R-LPSO interface promotes discontinuous dynamic recrystallization, while the 14H-LPSO interface promotes continuous dynamic recrystallization through the formation of kink bands.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Materials Science, Multidisciplinary
Koji Hagihara, Ryohei Ueyama, Michiaki Yamasaki, Yoshihito Kawamura, Takayoshi Nakano
Summary: Ternary alloys containing long-period stacking ordered (LPSO) phase exhibit superior mechanical properties due to the strengthening effect of LPSO phase. The matrix Mg solid solution in Mg/LPSO two-phase alloy has different mechanical properties compared to pure Mg, with the formation of LPSO nanoplate contributing to high strength. The results suggest that new ultrahigh-strength Mg alloys with lower Zn and Y contents but comparable or superior mechanical properties are expected to be developed by controlling LPSO nanoplate microstructures.
Article
Nanoscience & Nanotechnology
Michiaki Yamasaki, Tsuyoshi Mayama, Tsubasa Matsumoto, Koji Hagihara, Daria Drozdenko, Yoshihito Kawamura
Summary: The dislocation configuration around the 0001 0001 a 0001 a a slip system was successfully reproduced through crystal plasticity finite element analysis. Despite the formation of kink bands stimulated by the prismatic slip system, geometrical softening should be significant.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(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, 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
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
Qilu Ye, Bin Yang, Jiqing Zhao, Gang Yang, Zhihua Gong, Li Zhang
Summary: By adding Mo, Nb, Hf, and C elements to form multiple carbides in the AlCoCrFeNi2.1 alloy, and utilizing the nano-scale phase formed during annealing to strengthen the alloy, the tensile strength of the alloy was successfully increased while maintaining ductility.
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
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
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
J. A. Liu, J. Wang, M. L. Yang, Y. M. Yao
Summary: This study investigated the microstructures and phase compositions of Mg-8Y-2Ho-2Zn alloys in both as-cast and as-extruded states. Mechanical properties were evaluated, with the as-extruded alloy showing higher strength and elongation due to various strengthening mechanisms induced by the addition of Y and Ho elements.
METALS AND MATERIALS INTERNATIONAL
(2021)
Article
Metallurgy & Metallurgical Engineering
Sangwon Lee, Yejun Park, Jongbin Go, Young Mok Kim, Seok Su Sohn, Jiehua Li, Pyuck-Pa Choi
Summary: In this study, the evolution of LPSO phases in the as-cast Mg-6Gd-1Zn-0.6Zr alloy was investigated using TEM and APT. Two types of LPSO phases were formed, and their compositions were analyzed. The influence of LPSO phases on deformation behavior was also studied.
JOURNAL OF MAGNESIUM AND ALLOYS
(2023)
Article
Nanoscience & Nanotechnology
Quan Li, Jian Song, Yiwen Chen, Qi Zhang, Qingchun Zhu, Yue Liu, Jian Wang, Xiaoqin Zeng
Summary: Long-period stacking ordered (LPSO) phases effectively enhance the strength of Mg alloys by inhibiting the motion of non-basal dislocations and deformation twins. It was previously believed that LPSO phases do not affect the motion of basal dislocations. However, through in-situ TEM nanoindentation testing in a Mg97Y2Zn alloy, it was observed that the activity of basal dislocations is significantly reduced between LPSO phases with spacing less than 20 nm. Atomic HADDF-STEM results also revealed a high concentration of solute atoms near LPSO phases, which could contribute to strong solute strengthening. These findings have potential implications for the design of ultra-high strength Mg alloys containing nano-spaced LPSO phases.
SCRIPTA MATERIALIA
(2023)
Article
Materials Science, Multidisciplinary
Ning Su, Qingchen Deng, Yujuan Wu, Liming Peng, Kun Yang, Qiang Chen
Summary: This paper investigates the dissolution, refinement, and re-precipitation of LPSO structure/SFs in an Mg-Gd-Zn-Mn alloy through hot extrusion. The results suggest that refinement is dominated by the misalignment and re-dissolution mechanisms, with dislocation slips and rapid solute atom diffusion playing key roles. The evolution model of LPSO structure/SFs during continuous dynamic recrystallization is proposed based on the findings.
MATERIALS CHARACTERIZATION
(2021)
Article
Materials Science, Multidisciplinary
Zhiqing Yang, Weiwei Hu, Lifeng Zhang, Hengqiang Ye
PHYSICAL REVIEW MATERIALS
(2019)
Article
Materials Science, Multidisciplinary
Lifeng Zhang, Shangyi Ma, Weizhen Wang, Zhiqing Yang, Hengqiang Ye
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2019)
Article
Materials Science, Multidisciplinary
Wei Cui, Qibin Song, Huhu Su, Zhiqing Yang, Rui Yang, Na Li, Xing Zhang
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2020)
Article
Nanoscience & Nanotechnology
Pingli Mao, Yan Xin, Ke Han, Zheng Liu, Zhiqing Yang
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2020)
Article
Materials Science, Multidisciplinary
Fan Zhang, Yu Ren, Zhiqing Yang, Huhu Su, Zhen Lu, Chengwen Tan, Hailong Peng, Kentaro Watanabe, Bin Li, Matthew R. Barnett, Mingwei Chen
Article
Chemistry, Multidisciplinary
W. Z. Wang, X. Z. Zhou, Z. Q. Yang, Y. Qi, H. Q. Ye
Article
Chemistry, Physical
W. Z. Wang, D. Wu, R. S. Chen, Y. Qi, H. Q. Ye, Z. Q. Yang
JOURNAL OF ALLOYS AND COMPOUNDS
(2020)
Article
Materials Science, Multidisciplinary
Huhu Su, Xinzhe Zhou, Shijian Zheng, Hengqiang Ye, Zhiqing Yang
Summary: The study investigated the reactions between basal dislocations and CTBs in a Mg alloy, showing that these reactions can facilitate TB migration and change the grain boundary structure. The loss of local coherency induced by dislocation-TB reactions does not inherently impede TB migration, providing a new strategy to improve the ductility of Mg alloys.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2021)
Article
Nanoscience & Nanotechnology
Huhu Su, Xinzhe Zhou, Shijian Zheng, Di Wu, Rongshi Chen, Hengqiang Ye, Zhiqing Yang
SCRIPTA MATERIALIA
(2020)
Article
Metallurgy & Metallurgical Engineering
Meichen Liang, Hao Zhang, Lifeng Zhang, Peng Xue, Dingrui Ni, Weizhen Wang, Zongyi Ma, Hengqiang Ye, Zhiqing Yang
Summary: Microstructural evolution of Mg-based alloys during severe plastic deformation and mixing via friction stir welding was studied. The formation of a laminated onion-ring structure with significantly refined microstructures was observed in the stirred zone, leading to improved ultimate tensile strength and elongation to failure.
ACTA METALLURGICA SINICA-ENGLISH LETTERS
(2021)
Article
Materials Science, Multidisciplinary
Huhu Su, Xinzhe Zhou, Mengmeng Zhang, Shijian Zheng, Hengqiang Ye, Zhiqing Yang
Summary: In this study, reactions of {10 (1) over bar1} twin boundaries (TBs) with slip dislocations in a Mg alloy were investigated and modeled based on atomic-resolution observations and interfacial defect theory. The reactions were found to produce asymmetric tilt grain boundaries and various types of residual dislocations, leading to modifications in local atomic structures of steps at {10 (1) over bar1} TBs. These experimental results provide insights for understanding the plastic relaxation mechanisms at {10 (1) over bar1} TBs.
Article
Multidisciplinary Sciences
Hao Qin, Chao Zhen, Chunxu Jia, Zhiqing Yang, Hengqiang Ye, Hui-Ming Cheng, Gang Liu
Summary: A new method based on gaseous thermal oxidation-nitridation-denitridation processes has been developed to prepare metal foams with adjustable pore size; the resulting metal foams demonstrate enhanced performance in electrochemical water splitting and electrochemical energy storage.
Article
Materials Science, Multidisciplinary
Xinzhe Zhou, Huhu Su, Hengqiang Ye, Zhiqing Yang
Summary: The study investigates the reactions of {10 (1) over bar2} twin boundaries with dislocations in a Mg alloy subjected to cyclic deformation through atomic-resolution observations and MD simulations. It was found that different types of dislocations exhibit different reactions with {10 (1) over bar2} twin boundaries during cyclic deformation.
Article
Engineering, Environmental
Muhua Chen, Yuping Qiu, Weizhen Wang, Xinyan Li, Jiajun Wang, He Wen, Zhiqing Yang, Ping Wang
Summary: By engineering oxygen vacancies through amorphization and foreign cation doping in iron oxide, a supported Pt catalyst on Fe-W-O amorphous nanosheets was synthesized. This catalyst demonstrated a high specific reaction rate and excellent stability during continuous testing, outperforming most existing HCHO oxidation catalysts, highlighting the importance of functional oxygen defects in constructing synergistic active sites for promoting reactions requiring multiple active species.
JOURNAL OF HAZARDOUS MATERIALS
(2021)
Article
Chemistry, Physical
Yu-Ping Qiu, Wei-Zhen Wang, Mu-Hua Chen, Qing Shi, Zhi-Qing Yang, Ping Wang
Summary: This study reports the synthesis of an Ir-Ru-B/CeO2 catalyst and its intriguing properties for catalyzing N2H4・H2O decomposition. The results show that Ir-Ru alloying, B-doping, and strong metal-support interactions collectively contribute to the catalytic performance, leading to over 4-fold higher activity compared to state-of-the-art catalysts.
JOURNAL OF MATERIALS CHEMISTRY A
(2021)
Article
Chemistry, Physical
J. Zamora, T. Bautista, N. S. Portillo-Velez, A. Reyes-Montero, H. Pfeiffer, F. Sanchez-Ochoa, H. A. Lara-Garcia
Summary: Experimental and DFT studies were conducted on the structural, magnetic, and optical properties of RFeO3 perovskites. The perovskites exhibited an orthorhombic crystal structure and weak ferromagnetic behavior. They were confirmed to be semiconductors with a bandgap of approximately 2.1 eV.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Xianxiang Lv, Jing Jin, Weiguang Yang
Summary: By depositing TiN and TiO2 surface layers on AlSi films, the electrochemical performance of silicon-based anodes can be significantly improved, suppressing volume expansion and promoting the formation of a stable SEI layer.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Sharafat Ali, Haider Ali, Syedul Hasnain Bakhtiar, Sajjad Ali, Muhammad Zahid, Ahmed Ismail, Pir Muhammad Ismail, Amir Zada, Imran Khan, Huahai Shen, Rizwan Ullah, Habib Khan, Mohamed Bououdina, Xiaoqiang Wu, Fazal Raziq, Liang Qiao
Summary: The construction and optimization of redox-heterojunctions using a bifunctional phosphate as an electron-bridge demonstrated significant improvements in photo catalytic activity, including enhanced dispersion, reduced interfacial migration resistance, and increased abundance of active-sites.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Ren-Ni Luan, Na Xu, Chao-Ran Li, Zhi-Jie Zhang, Yu-Sheng Zhang, Jun Nan, Shu-Tao Wang, Yong-Ming Chai, Bin Dong
Summary: Extensive research has revealed that oxygen evolution reaction (OER) in alkaline conditions involves dynamic surface restructuring. The development and design of sulfide/oxide pre-catalysts can reasonably adjust the composition and structure after surface reconstruction, which is crucial for OER. This study utilized a simple two-step hydrothermal method to achieve in situ S leaching and doping, inducing the composition change and structure reconstruction of CoFe oxides. The transformed FeOOH and CoOOH exhibited excellent OER activity and could be easily mass-produced using low-cost iron based materials and simple methods.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Jun'an Lai, Daofu Wu, Peng He, Kang An, Yijia Wang, Peng Feng, WeiWei Chen, Zixian Wang, Linfeng Guo, Xiaosheng Tang
Summary: Zero-dimensional organic-inorganic metal halides (OMHs) are gaining attention in the fabrication of light-emitting diodes due to their broad emission band and high photoluminescence quantum yield. This work synthesized a zero-dimensional organic tetraphenylphosphonium bismuth chloride (TBC) that showed efficient blue light emission, with the emission mechanism attributed to the transition of Bi3+ ions. White light-emitting diodes (WLEDs) were fabricated using TBC, along with green-emitting and red-emitting single crystals, achieving single-component white emissions. These findings demonstrate the different emission mechanism of ns2 ions-based OMHs and highlight the potential of bismuth-based OMHs in WLEDs applications.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Xuewei Liang, Yunhai Su, Taisen Yang, Zhiyong Dai, Yingdi Wang, Xingping Yong
Summary: The revolutionary design concept of high-entropy alloys has brought new opportunities and challenges to the development of advanced metal materials. In this work, AlCrCuFe2NiTix high-entropy flux cored wires were prepared by combining the design idea of a high-entropy alloy with the characteristics of flux cored wire. AlCr-CuFe2NiTix high-entropy surfacing alloys were prepared using gas metal arc welding technology. The wear properties of the alloys were analyzed, and the phase composition, microstructure, strengthening mechanism, and wear mechanism were discussed. The results show that the alloys exhibit a dendritic microstructure with BCC/B2 + FCC phases. Increasing Ti content leads to the precipitation of Laves phase. The alloys show improved microhardness and wear resistance due to the precipitation of coherent B2 and Laves phases. However, excessive Ti addition results in the increase of Laves phase and reduced wear resistance of the alloys.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
M. Vadivel, M. Senthil Pandian, P. Ramasamy, Qiang Jing, Bo Liu
Summary: This work presents the enhanced photocatalytic and electrochemical performance of g-C3N4 assisted PAA on CoFe2O4 ternary nanocomposites. The incorporation of PAA and g-C3N4 improves the separation efficiency of photogenerated charge carriers, resulting in superior photocatalytic degradation and high specific capacitance values.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Vibhu T. Sivanandan, Ramany Revathy, Arun S. Prasad
Summary: In this study, pure and doped cobalt ferrite nanoparticles were prepared using the sol-gel auto-combustion method with the aid of lemon juice as eco-fuel. The crystal structure, lattice parameter, crystallite size, microstrain, optical parameters, and room temperature magnetic properties of the samples were analyzed. The effect of doping on the magnetic properties was also investigated.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Qing Guo, Bowen Zhang, Benzhe Sun, Yang Qi
Summary: This study prepared ZnO films with various nonpolar preferred orientations using conventional chemical bath deposition method and characterized their growth process and mechanism. It was found that the type and concentration of nitrate could control the preferred orientation and surface roughness of ZnO films. Additionally, ZnO films with different preferred orientations exhibited different optical properties.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Chong Zhang, Yan Liu, Zhaoyan Wang, Hang Yang
Summary: In this study, six bimetallic FeCo particles were synthesized via the hydrothermal method at different Fe:Co ratios. The Fe:Co ratio not only modulates the composition of the particles but also influences their structure and magnetic properties. The FeCo alloys showed a transformation from an Fe-based structure to a Co-based structure with increasing Co content. The Fe:Co ratio of 1:1 and 3:1 resulted in particles with the highest and lowest saturation magnetization, respectively.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Jianning Zhang, Jing Li, Yiren Wang, Xiaodong Mao, Yong Jiang
Summary: We conducted a study on the formation of ultra-fine Y-Ti-Ta-O nano-oxides in Ta+B micro-alloyed 13CrWTi-ODS alloys using electron microscopy and first-principles calculations. The Y-Ti-Ta-O nano-oxides were found to be mainly Y2(Ti,Ta)2O7, with an average size of 7 nm and a number density of 6.8 x 1023 m-3. Excess boron was found to enhance the adhesion of some low-sigma grain boundaries but weaken the Fe/Y2Ti2O7 interface, while excess tantalum enhanced the Fe/Y2Ti2O7 interface but caused serious degradation of grain boundaries.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Yirong Fang, Pei Cheng, Hang Yuan, Hao Zhao, Lishu Zhang
Summary: A new composite system of nitrogen-doped reduced graphene oxide and black phosphorus quantum dots has been developed for tumor therapy, showing improved electrochemical properties and stability. The system generates hydrogen peroxide and hydroxyl radical to effectively kill tumor cells.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Xiufang Qin, Yuanli Ma, Hui Zhang, Ting Zhang, Fang Wang, Xiaohong Xu
Summary: The structure and magnetism of cobalt ferrites after Mn2+-Tb3+ co-doping were studied. Co-doped samples exhibited cubic spinel structure and spherical shape of ferrite nanoparticles. The redistribution of Co2+ and Fe3+ ions between octahedral and tetrahedral sites was observed due to Mn2+-Tb3+ co-doping. The coercivity and magnetization saturation of co-doped samples were significantly improved, leading to a maximum energy product that is 190% higher than that of the un-doped sample.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Ho Yeon Lee, Wonjong Yu, Yoon Ho Lee
Summary: Recently, there has been an increasing interest in developing ultra-fine nanostructured electrodes with extensive reaction areas to enhance the performance and low-temperature operation of solid oxide fuel cells. The use of a refined approach involving co-sputtering metal alloys and oxide targets has demonstrated the feasibility of nano-columnar structures in perovskite-based electrodes, expanding the temperature range of thin film electrodes. This study systematically examines the effects of chamber pressure control in the co-sputtering process and identifies the intricate relationship between sputtering pressure and film structure. By fine-tuning the columnar growth in the electrode, significant improvements in performance and thermo-mechanical properties were achieved, resulting in high-performance all-sputtered solid oxide fuel cells.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Qianyun Bai, Xiaoxiao Yan, Da Liu, Kang Xiang, Xin Tu, Yanhui Guo, Renbing Wu
Summary: This study proposes a simple method to develop a non-precious transition metal-based electrocatalyst with high catalytic activity and robustness for the hydrogen evolution reaction. The as-synthesized electrode exhibits a low overpotential and high current density, indicating its potential in energy conversion.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)