Article
Materials Science, Multidisciplinary
Y. D. Chen, C. Y. Dan, Q. W. Shi, L. Jin, J. Liu, C. Chen, C. Li, H. W. Wang, Z. Chen
Summary: This study investigated the influence of low heating rates on the recrystallization of Al-Mg alloys as a complement to the theory of recrystallization related to heating rates. It was observed that the starting recrystallization temperature (Ts) at 5°C/min was higher than that at 10-20°C/min, unlike the recrystallization at high heating rates. A three-stage evolution of Ts with heating rates was proposed, showing a decrease, an increase, and then a decrease again. The evolution of Ts was discussed to be controlled by the competition between recovery and recrystallization, with the massive consumption of stored energy reducing the driving force of recrystallization at low heating rates.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Nanoscience & Nanotechnology
D. Schliephake, D. Bayoumy, S. Seils, C. Schulz, A. Kauffmann, X. Wu, A. J. Huang
Summary: High temperature compression and compression creep tests were conducted on Al-Mn-Mg-Sc-Zr alloy produced by selective laser melting, showing that solid solution strengthening in conjunction with LI2 Al3Sc precipitates improved creep resistance compared to conventionally cast alloys.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2022)
Article
Materials Science, Multidisciplinary
Jiachen Li, Xiaodong Wu, Lingfei Cao, Bin Liao, Yichang Wang, Qing Liu
Summary: The hot deformation behavior of Al-Mg-Si alloys was studied through isothermal compression tests, revealing that the dynamic recrystallization mechanism depends on the Zener-Hollomon values. Three different DRX mechanisms were observed during the experimental process.
MATERIALS CHARACTERIZATION
(2021)
Article
Materials Science, Multidisciplinary
Qi Zhao, Zhiyi Liu
Summary: To obtain a strong Goss texture in Al-Cu-Mg alloy sheet, texture evolution and related mechanisms during solution treatment were studied. It was found that the Goss texture can further develop during solution treatment, which is attributed to the growth of recrystallized Goss grains into deformed Brass grains and the slow growth of recrystallized Goss grains into substructured random grains. The effect of particles stimulated nucleation (PSN) on Goss texture formation and development was also revealed, showing that large Fe-rich phases restrict Goss grain nucleation and growth while relatively small θ and S phases do not hinder the development of Goss texture.
JOURNAL OF MATERIALS SCIENCE
(2023)
Article
Materials Science, Multidisciplinary
A. Martin, M. Vilanova, E. Gil, M. San Sebastian, C. Y. Wang, S. Milenkovic, M. T. Perez-Prado, C. M. Cepeda-Jimenez
Summary: The addition of Zr, along with large Al3Zr nucleant particles and nanoscale second phases, significantly enhances the microhardness of the AlZnMgCu alloy, making it exhibit superior mechanical properties compared to the Al7075-T6 aluminum alloy.
MATERIALS CHARACTERIZATION
(2022)
Article
Materials Science, Multidisciplinary
Katarzyna Stan-Glowinska, Amelia Zieba, Lukasz Rogal
Summary: This study investigates the microstructures and mechanical properties of two conventionally cast Al-Mg-Zn base alloys during aging process. The results show that the Ga-bearing alloy exhibits higher hardness and tensile strength, which can be attributed to its higher precipitate number density. In addition, the structure of formed precipitates differs between the two alloys.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(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
Materials Science, Multidisciplinary
Kai-xin Chen, Li-zhen Yan, Yong-an Zhang, Xi-wu Li, Zhi-Hui Li, Guan-jun Gao, Bai-qing Xiong, Hong-wei Liu
Summary: This study systematically investigated the effects of different size and number distributions of particles after intermediate annealing treatment on the final microstructure, texture, and formability of Al-Mg-Si-Zn alloy after solution treatment. The results revealed significant differences in grain size, texture intensity, and volume fraction of specific texture due to the influence of particle sizes and number distribution on the nucleation and growth of recrystallized grains. The study also established the recrystallized grain nucleation and growth mechanisms and analyzed the relationship between microstructure, texture, and formability.
JOURNAL OF MATERIALS SCIENCE
(2022)
Article
Materials Science, Multidisciplinary
Peng Zhang, Kunkun Shi, Jianjun Bian, Jinyu Zhang, Yong Peng, Gang Liu, Alexis Deschamps, Jun Sun
Summary: The study investigates the effects of solute clusters on the mechanical properties of a commercial Al-Zn-Mg alloy during natural aging (NA). It is found that dense solute clusters enhance the yield strength and strain hardening ability of the alloy without affecting dislocation density evolution. Solute clusters undergo a dissolution-to-coarsening transition during deformation, potentially contributing to the high strain hardening rate observed.
Article
Nanoscience & Nanotechnology
Siyu Zhou, Jiayin Wang, Guang Yang, Bin Wu, Han Xie, Ke Wu, Da An
Summary: Inter-layer plastic deformation is an effective method to improve the mechanical properties of wire arc additive manufacturing (WAAM) components. In this study, a periodic microstructure composed of alternate coarse and fine grain regions was obtained by applying the inter-layer hammering hybrid WAAM process. The grain size and dislocation density in the recrystallization region were significantly refined, leading to improved tensile properties. The best results were achieved when the inter-layer region was hammered 3 times.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2022)
Article
Nanoscience & Nanotechnology
Sang-Hwa Lee, Jae-Gil Jung, Sung-Il Baik, David N. Seidman, Min-Seok Kim, Young-Kook Lee, Kwangjun Euh
Summary: The research revealed that the formation and evolution of GPI and GPII zones during natural aging had a significant impact on the mechanical properties of the Al-7.6Zn-2.7Mg-2.0Cu-0.1Zr-0.07Ti alloy. The Zn/Mg atomic ratio, mean radius, number density, and volume fraction of the GP zones also played crucial roles in influencing the mechanical properties of the alloy.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2021)
Article
Nanoscience & Nanotechnology
Yangchao Deng, Wei Sun, Yang Yang, Hongyi Zhan, Kun Yan, Guang Zeng
Summary: The impacts of Mg2Sn precipitation on the age-hardening and deformation behavior of a Mg-4Sn-3Al-1Zn alloy have been studied. The alloy shows moderate hardening during ageing treatment at 175℃, with a significant increase in yield tensile strength but reduced elongation. Nanosized Mg2Sn precipitates are uniformly distributed within grains, improving tensile strength properties. Coarsened Mg2Sn precipitates and precipitate-free zones (PFZs) can be observed along grain boundaries. Tensile deformation primarily occurs in slip band array regions in grain interiors for the solution-treated alloy, and in PFZs for the as-aged alloy. The decrease in tensile ductility is caused by early intergranular microcracks initiated by coarse grain boundary Mg2Sn precipitates and PFZs. The results provide insights for developing affordable Mg alloys with a balanced combination of strength and ductility.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2023)
Article
Materials Science, Multidisciplinary
Hyeon-Woo Son, Sang-Hwa Lee, Sung-Ho Kang, Yong-You Kim, Kwangjun Euh
Summary: The effect of Ge addition on the delaying natural aging of Al-Mg-Si-Cu alloy was investigated. It was found that Ge addition suppressed the natural aging kinetics and cluster size. Atom probe tomography revealed that Ge refinement of cluster evolution was achieved by disturbing the magnesium enrichment of silicon-silicon clusters and enhancing vacancy trapping. Ge segregation at the cluster interface was also considered as a potential barrier to cluster growth.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Materials Science, Multidisciplinary
Seung Jun Oh, Jinyeong Yu, Seho Cheon, Seong Ho Lee, So-Yeon Lee, Taekyung Lee
Summary: This study investigates the effect of electropulsing treatment (EPT) on microstructural evolutions in a-Mg alloy. The results show that EPT process induces faster static recrystallization and faster dissolution of precipitates compared to conventional furnace heat treatment (FHT) at lower processing temperatures. EPT along the extrusion direction exhibits more pronounced effects than EPT along the transverse direction.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Materials Science, Multidisciplinary
Jingyu Jiang, Feng Jiang, Menghan Zhang
Summary: The microstructure of Al-Mg-Sc alloy under different strain rates and temperatures was investigated using SEM, EBSD, XRD, and TEM. It was found that the number of equiaxed grains does not always increase with decreasing strain rate. The TEM results confirmed the similarity between the recrystallization mechanism at a strain rate of 0.0001/s and in situ recrystallization. Furthermore, the XRD results revealed a decrease in dislocations with increasing temperature and decreasing strain rate, and the particle stimulated recrystallization was different between samples with strain rates of 0.01/s and 0.0001/s.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2022)
Article
Chemistry, Physical
H. Wu, S. P. Wen, H. Huang, K. Y. Gao, X. L. Wu, W. Wang, Z. R. Nie
JOURNAL OF ALLOYS AND COMPOUNDS
(2016)
Article
Nanoscience & Nanotechnology
H. Wu, S. P. Wen, H. Huang, X. L. Wu, K. Y. Gao, W. Wang, Z. R. Nie
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2016)
Article
Materials Science, Multidisciplinary
Miao Song, Kui Du, Chunyang Wang, Shengping Wen, Hui Huang, Zuoren Nie, Hengqiang Ye
METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE
(2016)
Article
Nanoscience & Nanotechnology
H. Wu, S. P. Wen, H. Huang, B. L. Li, X. L. Wu, K. Y. Gao, W. Wang, Z. R. Nie
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2017)
Article
Materials Science, Multidisciplinary
Jun-Tai Lu, Hui Huang, Hao Wu, Sheng-Ping Wen, Kun-Yuan Gao, Xiao-Lan Wu, Zuo-Ren Nie
Summary: The effect of various retrogression and re-aging treatments on mechanical properties and corrosion behavior of a new type Al-Zn-Mg-Cu-Er-Zr alloy was investigated. Results showed that RRA treatment effectively improves IGC and EXCO resistance while sacrificing less strength. The optimal combination of strength, IGC and EXCO resistance is obtained after retrogression at 180 degrees C for 60 min. The microstructural evolution of the precipitates was discussed for different heat treatment tempers.
Article
Metallurgy & Metallurgical Engineering
Hao Wu, Sheng-ping Wen, Jun-tai Lu, Zhen-peng Mi, Xian-long Zeng, Hui Huang, Zuo-ren Nie
TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA
(2017)
Article
Materials Science, Multidisciplinary
Yusheng Ding, Kunyuan Gao, Shanshan Guo, Shengping Wen, Hui Huang, Xiaolan Wu, Zuoren Nie, Dejing Zhou
MATERIALS CHARACTERIZATION
(2019)
Article
Materials Science, Multidisciplinary
Yusheng Ding, Kunyuan Gao, Hui Huang, Shengping Wen, Xiaolan Wu, Zuoren Nie, Shanshan Guo, Rui Shao, Cheng Huang, Dejing Zhou
MATERIALS & DESIGN
(2019)
Article
Nanoscience & Nanotechnology
Yusheng Ding, Kunyuan Gao, Xiangyuan Xiong, Hui Huang, Shengping Wen, Xiaolan Wu, Zuoren Nie, Rui Shao, Cheng Huang, Shanshan Guo, Dejing Zhou
SCRIPTA MATERIALIA
(2019)
Article
Materials Science, Multidisciplinary
Yusheng Ding, Xiaolan Wu, Kunyuan Gao, Cheng Huang, Xiangyuan Xiong, Hui Huang, Shenping Wen, Zuoren Nie
MATERIALS CHARACTERIZATION
(2020)
Article
Chemistry, Physical
S. S. Liang, S. P. Wen, J. Xu, X. L. Wu, K. Y. Gao, H. Huang, Z. R. Nie
JOURNAL OF ALLOYS AND COMPOUNDS
(2020)
Article
Nanoscience & Nanotechnology
S. S. Liang, S. P. Wen, X. L. Wu, H. Huang, K. Y. Gao, Z. R. Nie
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2020)
Article
Chemistry, Physical
Haonan Li, Kunyuan Gao, Chunlai Gao, Yusheng Ding, Xiangyuan Xiong, Xiaolan Wu, Hui Huang, Shengping Wen, Zuoren Nie, Qian Zhang
Article
Materials Science, Multidisciplinary
Wang Huan, Huang Hui, Nie Zuoren, Wen Shengping, Gao Kunyuan, Wang Yue, Zhang Pingping
RARE METAL MATERIALS AND ENGINEERING
(2016)
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)