Article
Nanoscience & Nanotechnology
Shiyang Liu, Hongyi Zhan, Damon Kent, Qiyang Tan, Yu Yin, Nghiem Doan, Chang Wang, Matthew Dargusch, Gui Wang
Summary: This study investigates the impact of Mg additions on the deformation behaviors and dynamic recrystallization mechanisms of Zn-Mg alloys during room temperature compression. Low Mg content alloy exhibited continuous and twin-induced dynamic recrystallization, resulting in a uniform and refined microstructure with excellent properties. High Mg content alloy showed complex recrystallization mechanisms, with particle-induced dynamic recrystallization influenced by eutectic structures leading to partially recrystallized microstructure.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2022)
Article
Chemistry, Physical
Yu-Ying He, Gang Fang
Summary: In this study, the dynamic precipitation (DP) of Mg17Al12 phase during the deformation of an Mg-Al-Zn-RE alloy was investigated. The effects of temperature and strain rate on the volume fraction, number density, and average size of Mg17Al12 precipitates were studied. Phenomenological models linking the precipitation parameters with deformation conditions were established and validated. The pinning effect of DP on grain growth and the influence of temperature on DRXed grain size were also discussed. The results provide insights into the understanding of microstructural evolution in the Mg-Al-Zn-RE alloy.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Nanoscience & Nanotechnology
Ming Li, Yuanchun Huang, Yu Liu, Xu Wang, Zhou Wang
Summary: The effects of heat treatment on the dynamic recrystallization behavior, texture, and mechanical properties of a magnesium alloy were investigated. It was found that heat treatment can eliminate microstructures and increase the solid solubility, leading to the occurrence of continuous dynamic recrystallization and dynamic precipitation, which improve the alloy's performance.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2022)
Article
Nanoscience & Nanotechnology
Zhirou Zhang, Qinghuan Huo, Zhenyu Xiao, Yuxiu Zhang, Aki Hashimoto, Xuyue Yang
Summary: The study proposed a practical method for optimizing the mechanical properties of Mg-4Y-2Nd-0.2Zn-0.5Zr alloy by combining interrupted compression with intermediate annealing, resulting in the formation of deformation bands triggered by the intermediate annealing and a higher volume fraction of ultra-fine grains in the final IC sample compared to the CC sample.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2021)
Article
Materials Science, Multidisciplinary
Mozhgan Shokri, Abbas Zarei-Hanzaki, Hamid Reza Abedi, Jae Hyung Cho
Summary: The study investigated the correlation between microstructure/texture evolutions and high temperature flow behavior in Mg alloy containing long period stacking order (LPSO) phases. The annealing treatment effectively strengthened the alloy and decreased ductility, with blocky LPSO assisting dynamic recrystallization and lamellar LPSO increasing alloy strength. The findings suggest that microstructure and texture evolution play a significant role in the high-temperature behavior of the Mg alloy.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2021)
Article
Chemistry, Physical
Hong Xu, Yu-Jie Zou, Yu Huang, Pin-Kui Ma, Zhi-Peng Guo, You Zhou, Yu-Peng Wang
Summary: Electric pulse can enhance plasticity of metals by facilitating room-temperature dynamic recrystallization for texture weakening, and subsequently improving plasticity. Our study found a strong dependence of peak flow stress and fracture strain on current density in a polycrystalline Mg-3Al-1Sn-1Zn alloy.
Article
Nanoscience & Nanotechnology
Jun Zhao, Bin Jiang, Jun Xu, Weijun He, Guangsheng Huang, Fusheng Pan
Summary: This study discussed the microstructure, texture and mechanical properties of extruded Mg-xGd sheets (with x = 1.0, 1.5, 2.0 and 2.5 wt%). The fully recrystallized microstructure was observed in the extruded Mg-xGd sheets. The texture with [112 over line 1]-[202 over line 1] double fiber orientations was present in all the extruded sheets, and the texture weakening was observed with increasing Gd content. The tensile strength of the sheets gradually increased with an increase in Gd content, mainly due to the fine grain size and more Gd atoms, and the increase in ductility was related to the fine grain size, more Gd atoms and higher Schmid factor for basal slip. Compression twins and double twins played a key role in the formation of [112 over line 1]-[2021] double fiber texture during extrusion. Fine recrystallized grains with an unusual texture of [112 over line 1]-[202 over line 1] double fiber orientation preferentially formed in the undynamically recrystallized matrix with [101 over line 0] fiber orientation through continuous dynamically recrystallization and grew along well-defined bands. Further extrusion deformation resulted in a fully recrystallized microstructure with an unusual texture.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2022)
Article
Materials Science, Multidisciplinary
Xiong Wu, Xuerui Jing, Hui Xiao, Sihui Ouyang, Aitao Tang, Peng Peng, Bo Feng, Muhammad Rashad, Jia She, Xianhua Chen, Kaihong Zheng, Fusheng Pan
Summary: The recrystallization behavior of extruded Mg-Zn-Mn alloys under different aging treatment was systematically investigated, revealing the promoting effect of primary coarse particles and the pinning effect of nanoscale particles on recrystallization. The alloy obtained uniform and fine microstructure with good mechanical properties after peak-aged treatment.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2022)
Article
Materials Science, Multidisciplinary
Mingzhe Bian, Xinsheng Huang, Yasumasa Chino
Summary: The research demonstrates a significant improvement in room temperature stretch formability of concentrated Mg-Al-Zn-Ca alloy sheets by increasing the final rolling temperature. Microstructural investigation reveals that the enhancement in formability is mainly associated with weakened basal textures.
Article
Materials Science, Multidisciplinary
Guangli Bi, Hongsheng Man, Jing Jiang, Yuandong Li, Tijun Chen, Xiaoru Zhang, Daqing Fang, Xiangdong Ding
Summary: The effects of Zn addition on the microstructure and mechanical properties of Mg-Y-Co-W alloy were investigated. The replacement of Co with Zn improved the strength and ductility of the alloy, resulting in refined grains and precipitation strengthening from different phases.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2022)
Article
Materials Science, Multidisciplinary
Zahra Abbasi, Ramin Ebrahimi, Jose Maria Cabrera
Summary: Magnesium alloy shows enhanced properties through alloying with rare earth elements. Dynamic recrystallization is the main mechanism for the formation of bimodal microstructures in magnesium alloys, and increasing the amount of alloying elements promotes recrystallization and weakens texture intensity.
METALS AND MATERIALS INTERNATIONAL
(2021)
Article
Metallurgy & Metallurgical Engineering
L. Y. Zhao, H. Yan, R. S. Chen, En-Hou Han
Summary: The grain growth process in magnesium alloys, specifically in the Mg-Zn-Gd alloy, shows gradual growth with increasing annealing time, closely associated with texture changes.
JOURNAL OF MAGNESIUM AND ALLOYS
(2021)
Article
Chemistry, Physical
Yali Duan, Jianmin Yu, Beibei Dong, Huifang Zhang, Mu Meng, Mei Cheng, Zhimin Zhang, Baohong Zhang, Hongyuan Hao, Ping Xu, Huiling Liu
Summary: Rotating backward extrusion (RBE) is a severe plastic deformation (SPD) method used to produce cylindrical components with very large strain by a single pass. The cup-shaped sample formed by RBE exhibited a typical gradient microstructure, with the average grain size decreasing along the radial direction due to different strains and strain rates in different regions. The center region showed the highest deformation and the edge region exhibited the lowest deformation in the RBEed sample.
Article
Metallurgy & Metallurgical Engineering
Chuanqiang Li, Yibin He, Huaipei Huang
Summary: In this study, the microstructure, crystallographic texture, mechanical properties, and corrosion resistance of as-extruded HCP Mg-xLi (x = 1, 3, 5; in wt%) alloys were investigated. The results showed that the Mg-5Li alloy with high lithium content exhibited a low degree of dynamic recrystallization and strong prismatic texture, leading to higher mechanical strength along the extrusion direction. Additionally, the high lithium content improved the corrosion resistance of the alloy and mitigated groove-like corrosion.
JOURNAL OF MAGNESIUM AND ALLOYS
(2021)
Article
Metallurgy & Metallurgical Engineering
Chunquan Liu, Xianhua Chen, Jiao Chen, Andrej Atrens, Fusheng Pan
Summary: The systematic investigation on microstructural evolution, texture, and mechanical properties of Mg-4Zn-xCa-yMn alloys revealed that alloying with Ca and Mn can enhance strength while reducing ductility. The addition of Mn can mitigate the traditional texture weakening effect of Ca.
JOURNAL OF MAGNESIUM AND ALLOYS
(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)