Article
Materials Science, Multidisciplinary
Xinyang Jiao, Yu Zhang, Yang Yu, Chengyi Xu
Summary: Porous TiAl3 intermetallics with high porosity were synthesized by thermal explosion reaction. It exhibited an open pore structures and uniform pore size distribution, making it suitable for solid-liquid filtration and separation.
Article
Materials Science, Multidisciplinary
Wenbin Wang, Zidong Wang, Shigang Wang, Zhiming Shi
Summary: Porous quartz ceramics with different pore structures were prepared by self-sintering, and the particle size of desert sand played a key role in the sintering process, affecting the ratio of silica to feldspar phases.
Article
Materials Science, Multidisciplinary
Xinyang Jiao, Yu Zhang, Qingli Wu, Zhichao Shang, Yang Yu, Xiaoxiao Zhang, Peizhong Feng
Summary: Porous TiAl3 materials were prepared using a thermal explosion method with Ti-75 at% Al mixture powders. Cyclic oxidation tests were conducted at different temperatures, revealing the formation of a thin protective oxide layer at 650℃, identified as Al2O3. The thickness of the oxide scale increased with higher oxidation temperatures. The compressive strength of the oxidized sample was inversely proportional to its porosity, indicating potential applications of porous TiAl3 intermetallic at temperatures up to 800℃.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Materials Science, Ceramics
Bilyaminu Suleiman, Hongtao Zhang, Yulong Ding, Yongliang Li
Summary: This study presents a new innovative approach to fabricate porous alumina ceramics using cold sintering process (CSP) with NaCl as pore forming agent. The effects of CSP and post-annealing temperature on the microstructure and mechanical strength were investigated. The results showed that the annealing process resulted in the formation of a porous Al2O3 structure, with a decrease in porosity and an increase in hardness and mechanical strength as the annealing temperature increased. BET analysis revealed a complex pore structure with micropores, mesopores, and macropores.
CERAMICS INTERNATIONAL
(2022)
Article
Chemistry, Physical
Ping Gao, Bing Tian, Jilin Xu, Yunxiang Tong, Feng Chen, Li Li
Summary: The study found that the mechanical strength and ductility of porous NiMnGa alloy were significantly enhanced after compositing with epoxy resin due to the synergistic effect between the polymer and porous alloy. The composite exhibited a martensitic transformation behavior similar to that of the porous alloy, and the constraint effect of the polymer matrix on the phase transformation of the porous alloy could be neglected.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Materials Science, Multidisciplinary
Pradeep Singh, Vikas Shrivastava, I. B. Singh, D. P. Mondal
Summary: The research on three groups of porous Ti4Al4Co samples revealed significant microstructural transformations due to powder milling and different sintering atmospheres, which in turn affected the mechanical and corrosion properties of the alloy. Sample S-1 showed the highest compressive strength and lowest corrosion current density among the three samples.
METALS AND MATERIALS INTERNATIONAL
(2022)
Article
Materials Science, Multidisciplinary
Sweta Rani Biswal, Seshadev Sahoo
Summary: A solid-state processing method was utilized to fabricate an advanced aluminum-based hybrid composite with two-dimensional WS2 reinforcement. The structural and mechanical properties of the newly developed Al-based hybrid composites were evaluated, showing an increase in density and hardness with an increase in WS2 wt% in the matrix phase. Discussing the effect of WS2 reinforcement helped optimize the composition of the developed hybrid composite.
Article
Chemistry, Physical
Xuebin Chen, Lei Zhao, Liwu Jiang, Haizhou Wang
Summary: This study investigated the effects of microwave sintering on copper-rGO composites, finding improved microhardness and electrical/thermal conductivity in the microwave-sintered samples.
Article
Construction & Building Technology
Bailin Li, Fei Luo, Xihui Ai, Xiaoya Li, Li Li
Summary: This study investigated the impact of nanosilica on the properties of unbound granular materials, finding that the addition of nanosilica can increase the elastic modulus and shear strength, but decrease ductility. The maximum improvement rate was observed at 3.5% nanosilica content.
CASE STUDIES IN CONSTRUCTION MATERIALS
(2022)
Article
Materials Science, Multidisciplinary
L. Bolzoni, F. Yang
Summary: This study investigates the applicability and accuracy of five fundamental analytical models commonly used to estimate the thermophysical properties of porous materials for predicting the mechanical behavior of isotropic pure metal-based and two-phase alloy-based porous materials. New combined models with increased accuracy of approximately 90% have been derived and could be applied for predicting the thermophysical and mechanical properties of multi-phase materials with unknown microstructures.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2021)
Article
Materials Science, Multidisciplinary
Hongnan Li, Ling Yan, Hongmei Zhang, Fangfang Ai, Dadong Zhao, Yan Li, Zhengyi Jiang
Summary: The study investigated the effects of sintering temperature on the microstructure, interfacial element diffusion, and microhardness of WC-Co-Ni-Fe/HSS composites. Results showed that as the sintering temperature increased, the number of micropores decreased, and element diffusion increased, forming a stronger microhardness structure.
Article
Materials Science, Multidisciplinary
Jiuhong Ma, Huizhong Zhao, Han Zhang, Yang Yang, Yichong Li, Zecheng Feng, Lida Shi, Yi Zhao, Jian He
Summary: Three kinds of calcined alumina powders with different properties were sintered under pressure without sintering additives. The sample containing the pseudomorphic structure has a characteristic sintering temperature and shows a significant difference in physical properties and pore parameters before and after sintering. Based on the results of scanning electron microscopy and pore parameter analyses, a preferential densification mechanism was proposed for particles with pseudomorphic structures, revealing abnormally increased pore sizes.
Article
Chemistry, Physical
M. A. Mazo, A. C. Caballero, J. Rubio
Summary: In this study, cheap, abundant, and easily-obtained carbon fillers such as graphite and carbon black were successfully incorporated into a silicon oxycarbide matrix to obtain dense crack-free bulk composites with enhanced electrical and thermal conductivities. Raman parameters were crucial for understanding the electronic and/or phonon transport in the composites.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Physical
Zhineng Pu, Xing Kang, Ziwen Cao, Xiaochen Qin, Lianwen Wang, Chengze Liu
Summary: This study successfully synthesized and characterized a Ti-48Al-2Cr-2Nb-based composite reinforced by B4C addition, produced by spark plasma sintering. The addition of B4C resulted in a significant decrease in grain size, mainly due to the pinning effect of in-situ generated TiB2 and Ti2AlC particles at grain boundaries. The Ti2AlC volume fraction increased with B4C content, and the composite exhibited improved strength and ductility.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Materials Science, Multidisciplinary
Haowei Yang, Huan Tu, Zhe Yang, Fan Tang, Wenjian Cao, Chenguang Huang, Yacong Guo, Yanpeng Wei
Summary: A novel composite foam with cushioning properties is developed by incorporating shear stiffening gel (SSG) into Ethylene-vinyl (EVA) foam. Uniaxial compression testing shows that the additive SSG effectively enhances the energy absorption capacity. In-situ scanning electron microscopy reveals that homogeneous microstructural morphology and phase separation between SSG and EVA play dominant roles in the improvement of cushioning properties.
Article
Chemistry, Physical
Haixing Gao, Shuo Wang, Weng-Chon (Max) Cheong, Kaixi Wang, Huifang Xu, Aijian Huang, Junguo Ma, Jiazhan Li, Weng-Fai (Andy) Ip, Kwan San Hui, Duc Anh Dinh, Xi Fan, Feng Bin, Fuming Chen, Kwun Nam Hui
Summary: Ultrathin nitrogen-doped carbon nanosheets with intrinsic defects were synthesized through the pyrolysis of ZIF-8 with linker vacancies. The as-synthesized electrocatalyst exhibited excellent oxygen reduction reaction (ORR) activity and zinc-air battery performance. The adjacent sp3-carbon was found to enhance the adsorption and activation of oxygen molecules on sp2-carbon, leading to a lower ORR overpotential.
Article
Chemistry, Physical
Xinning Zhu, Wei Zhou, Zhengchao Zhu, Rongkang Liu, Yunsong Lian, Rui Chen, Linjing Wu, Dongsheng Ji
Summary: This study establishes and investigates a traveling-wave flow field for the performance improvement of proton exchange membrane fuel cell (PEMFC). The influence of multiple structural parameters on the flow law, mass transfer characteristics, and output performance of PEMFC is analyzed, and the weight coefficient of each structural parameter is obtained. Simulation results show that the traveling-wave flow field has excellent oxygen transport and drainage functions, and it significantly improves the mass transfer coefficient and net power density of the PEMFC compared to the conventional flow field. The weighting relationship of the traveling-wave structural parameters on the mass transfer performance and net power density is identified as wave height > wave number > wave length > wave spacing.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Chemistry, Multidisciplinary
Kaixi Wang, Shuo Wang, Kwan San Hui, Junfeng Li, Chenyang Zha, Duc Anh Dinh, Zongping Shao, Bo Yan, Zikang Tang, Kwun Nam Hui
Summary: A 3D quasi-parallel structure consisting of dense Pt nanoparticles immobilized on oxygen vacancy-rich NiOx heterojunctions has been developed as an alkaline hydrogen evolution reaction (HER) catalyst. The catalyst exhibits extraordinary HER performance with a low overpotential, high mass activity, and long durability. When combined with NiFe-layered double hydroxide, the assembled alkaline electrolyzer requires extremely low voltage and can operate stably for a long time.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Chemistry, Physical
Shunping Ji, Yunshan Zheng, Kwan San Hui, Junfeng Li, Kaixi Wang, Chunyan Song, Huifang Xu, Shuo Wang, Chenyang Zha, Duc Anh Dinh, Zikang Tang, Zongping Shao, Kwun Nam Hui
Summary: By mixing amorphous zinc phosphate with black phosphorus nanomaterials, the agglomeration of black phosphorus can be weakened, and the volume expansion can be reduced, thus improving the stability of the composite electrode in humid air. The optimized amorphous black phosphorus/zinc phosphate composite anode retains a capacity of 369.0 mA h g-1 and reduces the volume expansion to 47% compared to the untreated electrode. Additionally, the amorphous zinc phosphate can absorb water, resulting in good environmental stability even after exposure to humid air for two days, with a reversible capacity of 629.2 mA h g-1.
ENERGY STORAGE MATERIALS
(2023)
Article
Engineering, Environmental
Xinying Li, Ding Yuan, Tian Xie, Quancong Zhang, Wenjun Xu, Ting Fu, Xuyang Chu, Tao Luo, Linjing Wu, Wei Zhou
Summary: This study demonstrates the use of Joule-heating catalyst support (JHCS) to enhance the efficiency of methanol steam reforming reactions. The Joule-heating method allows for direct heat provision inside the reactor, resulting in faster thermal response and improved methanol conversion rate compared to external heating methods.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Multidisciplinary
Yunshan Zheng, Junfeng Li, Shunping Ji, Kwan San Hui, Shuo Wang, Huifang Xu, Kaixi Wang, Duc Anh Dinh, Chenyang Zha, Zongping Shao, Kwun Nam Hui
Summary: In this study, a Zn-doped K0.02Na0.55Mn0.70Ni0.25Zn0.05O2 material (denoted as KNMNO-Z) was reported to inhibit the Jahn-Teller effect and reduce the irreversible phase transition in potassium-ion batteries. Through the Zn-doping strategy, higher Mn valence was achieved, leading to an improvement in cyclic stability with a high retention rate of 97% after 1000 cycles.
Article
Nanoscience & Nanotechnology
Sobin Mathew, Ki-Hyun Park, Youri Han, Kwun Nam Hui, Oi Lun Li, Young-Rae Cho
Summary: A novel metal-free catalyst with remarkable activity in the oxygen evolution reaction (OER) and hydrogen evolution reaction (HER) was synthesized. The catalyst exhibited low overpotential when deposited on a conductive nickel foam substrate. Additionally, it displayed lower operating potentials and good stability in an alkaline anion-exchange membrane electrolyzer.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Nanoscience & Nanotechnology
Chen Zhang, Rui Chen, Wenliya Luo, Jincheng Wang, Dongyang Chen, Pengfeng Chen, Sirui Liu, Yu Xie, Wei Zhou, Tao Luo
Summary: In this study, a batch fabrication strategy is proposed for paper-based waterproof flexible pressure sensors using single-walled carbon nanotube coated tissue paper pieces. The pieces are bonded using roll-to-roll lamination, resulting in sensors with high stability, rapid response time, and a wide measurement range. These sensors can be used for human physiological signal detection, motion tracking, and drowning detection.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Engineering, Electrical & Electronic
Wenzhuo Zhang, Lifeng Qin, Rui Chen, Jincheng Wang, Wei Zheng, Wei Zhou
Summary: This article systematically analyzes the influence of the on-resistance of the multiplexer on the measurement error of resistive sensor arrays and proposes improved strategies. The simulation and experimental results confirm the effectiveness of the proposed strategies.
IEEE SENSORS JOURNAL
(2023)
Article
Chemistry, Multidisciplinary
Zhenjiang Yu, Hongmei Shan, Yunlei Zhong, Guo Hong, Kwan San Hui, Xia Zhang, Kwun Nam Hui
Summary: This study presents a lithium-free V2O5 cathode for application in polymer-based solid-state batteries (SSBs) with high energy density. The microstructured transport channels and suitable operational voltage enable the utilization of polymer-based solid-state electrolyte (SSE). The V2O5 cathode, constructed through microstructural engineering, exhibits improved electrochemical performance and cycling stability in SSBs.
Article
Nanoscience & Nanotechnology
Chen Zhang, Rui Chen, Wenliya Luo, Jincheng Wang, Dongyang Chen, Pengfeng Chen, Sirui Liu, Yu Xie, Wei Zhou, Tao Luo
Summary: We have developed a roll-to-roll lamination strategy for batch fabrication of paper-based waterproof flexible pressure sensors, which exhibit good consistency and reliability. This method allows for the rapid fabrication of waterproof sensors with high stability, fast response time, and wide measurement range, enabling applications in human physiological signal detection, motion tracking, and drowning detection.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Physical
Cheng-Zong Yuan, Shuo Wang, Kwan San Hui, Kaixi Wang, Junfeng Li, Haixing Gao, Chenyang Zha, Xiaomeng Zhang, Duc Anh Dinh, Xi-Lin Wu, Zikang Tang, Jiawei Wan, Zongping Shao, Kwun Nam Hui
Summary: The synergistic regulation of electronic structures of transition-metal oxide-based catalysts using oxygen vacancy defects and single atom doping can significantly enhance their performance in oxygen evolution reaction (OER). In this study, a simple defect-induced in situ single-atom deposition strategy was developed to deposit atomically dispersed Ru single atoms onto oxygen vacancy-rich cobalt oxides (Ru/Co3O4-x) by a spontaneous redox reaction. The resulting Ru/Co3O4-x electrocatalyst, with the coexistence of oxygen vacancies and Ru atoms, exhibited excellent OER performance with a low overpotential, small Tafel slope value, and good long-term stability in alkaline media. Density functional theory calculations revealed that the synergy between oxygen vacancies and atomically dispersed Ru can optimize the adsorption of oxygen-based intermediates and reduce the reaction barriers of OER by tailoring the electron decentralization and d-band center of Co atoms. This study proposes a feasible strategy for constructing electrocatalysts with abundant oxygen vacancies and atomically dispersed noble metals, and provides a deep understanding of the electronic engineering of transition-metal-based catalysts to boost OER.
Article
Chemistry, Multidisciplinary
Jincheng Wang, Rui Chen, Dongsheng Ji, Wenjun Xu, Wenzhuo Zhang, Chen Zhang, Wei Zhou, Tao Luo
Summary: In this study, a flexible bimodal sensor that utilizes the spatial orthogonality between in-plane thermoelectricity and out-plane piezoresistivity is proposed. This sensor enables fully decoupled temperature-pressure sensing with high sensitivity and negligible mutual interference, providing accurate measurements within a wide pressure range and temperature variation.
Article
Nanoscience & Nanotechnology
Ahmad Mirzaei, Peter D. Hodgson, Xiang Ma, Vanessa K. Peterson, Ehsan Farabi, Gregory S. Rohrer, Hossein Beladi
Summary: This study investigated the influence of parent austenite grain refinement on the intervariant boundary network in a lath martensitic steel. It found that refining the parent austenite grain led to a decrease in the fraction of certain boundaries in the martensite and an increase in the connectivity of low energy boundaries, ultimately improving the impact toughness.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2024)
Article
Nanoscience & Nanotechnology
N. L. Church, C. E. P. Talbot, L. D. Connor, S. Michalik, N. G. Jones
Summary: Metastable beta Ti alloys based on the Ti-Nb system have attracted attention due to their unique properties. However, the unstable cyclic behavior of these alloys has hindered their widespread industrial use. Recent studies have shown that internal stresses, including those from dislocations, may be responsible for this behavior. This study demonstrates that inter-cycle thermal treatments can mitigate the unstable cyclic behavior, providing a significant breakthrough in our understanding of Ti-Nb superelastic materials.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2024)
Article
Nanoscience & Nanotechnology
Di Zhao, Chenchen Zhao, Ziyang Xiu, Jiuchun Yan
Summary: This study proposes a novel strategy for achieving the bonding of SiC ceramic and Al alloy using ultrasound. The ultrasound promotes the dissolution of Al into the solder, activating the solder and triggering the interfacial reaction between SiC ceramic and solder. With increasing ultrasonic duration, the bonding between SiC and Al transitions from partial to full metallurgical bonding.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2024)
Article
Nanoscience & Nanotechnology
Kang Du, Yang Zhang, Guangda Zhao, Tao Huang, Liyuan Liu, Junpeng Li, Xiyu Wang, Zhongwu Zhang
Summary: This paper systematically investigated the evolution of microstructure in Fe-Ni-Co-Al polycrystalline alloys and its effects on mechanical properties. The results revealed that the migration of grain boundaries in different processes is driven by different factors, which impacts the grain orientation and precipitate formation. In the process of directional recrystallization, grains with specific orientations grow in the grain boundary region and form the dominant orientation, while grains with lower migration rate form the minor orientation. The alloy produced through directional recrystallization exhibited good recoverable strain and superelastic strain, while the alloy produced through solid solution treatment showed no evident superelastic behavior.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2024)
Article
Nanoscience & Nanotechnology
Edohamen Awannegbe, Liang Chen, Yue Zhao, Zhijun Qiu, Huijun Li
Summary: This study employed laser metal deposition to additively manufacture Ti-15Mo wt% alloy, and subsequently subjected it to post-fabrication uniaxial thermomechanical processing. The results showed that different zones in the microstructure remained after processing, and deformation mechanisms mainly involved slip and martensite formation. The compressive mechanical properties were found to be dependent on strain rate, with higher flow stress and compressive strength observed at higher strain rates. Grain structure homogenisation was not achieved, leading to anisotropic tensile properties.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2024)
Article
Nanoscience & Nanotechnology
Reza Khatib Zadeh Davani, Enyinnaya George Ohaeri, Sandeep Yadav, Jerzy A. Szpunar, Jing Su, Michael Gaudet, Muhammad Rashid, Muhammad Arafin
Summary: This research aims to investigate the effect of roughing and finishing reductions on crystallographic texture. The results show significant heterogeneity in the centerline region, with higher intensity of certain textures. Drop Weight Tear Test indicates that steel specimens with lower and medium reductions exhibit superior low-temperature impact toughness compared to steel with higher reductions. The electrochemical hydrogen charging experiments confirm the presence of internal hydrogen cracks only in steel with lower and medium reductions.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2024)
Article
Nanoscience & Nanotechnology
Flavio De Barbieri, Denis Jorge-Badiola, Rodrigo Allende, Karem Tello, Alfredo Artigas, Franco Perazzo, Henry Jami, Juan Perez Ipina
Summary: This study examines the effect of Cr additions on the mechanical behavior of TWIP steel at temperatures ranging from 25°C to 350°C. The results indicate that different temperature-dependent strengthening mechanisms, including mechanical twinning, Dynamic Strain Aging, and slip bands, are at play. The stacking fault energy (SFE) influences the percentage of mechanical twinning, which in turn affects the strain hardening rate.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2024)
Article
Nanoscience & Nanotechnology
Hanlin Peng, Siming Huang, Ling Hu, Bingbing Luo, Liejun Li, Ian Baker
Summary: This study explores the weldability, microstructures, and mechanical properties of two L1(2)-nanoparticle-strengthened medium-entropy alloys after electron beam welding (EBW). The results show that strong yet ductile defect-free joints were produced, with larger grain sizes in the fusion zones compared to the heat-affected zones and base materials. Both EBWed MEAs exhibited high yield strengths, high ultimate tensile strengths, and good fracture strains at 77 K. The V-doping improved the cryogenic mechanical properties of the TMT MEA.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2024)
Article
Nanoscience & Nanotechnology
Yongxin Wang, Lei Chen, Lizi Shao, Shuo Hao, Motomichi Koyama, Xingzhou Cai, Xiaocong Ma, Miao Jin
Summary: This study investigated the tensile deformation behavior of an Mn-N bearing lean duplex stainless steel with metastable austenite. The results showed that the strain rate had significant influence on the work hardening, strain-induced martensitic transformation, and fracture mechanism.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2024)
Article
Nanoscience & Nanotechnology
Jong Woo Won, Seulbi Lee, Hye-Jeong Choe, Yong-Taek Hyun, Dong Won Lee, Jeong Hun Lee
Summary: Cold-rolled pure titanium showed improved sheet formability after undergoing cryogenic-deformation treatment. This treatment increased the thinning capability of the titanium and suppressed cracking during sheet forming. The formation of twins during deformation contributed to high thinning capability and increased strength through grain refinement and dislocation accumulation.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2024)
Article
Nanoscience & Nanotechnology
Handong Li, Lin Su, Lijuan Wang, Yanbin Jiang, Jiahui Long, Gaoyong Lin, Zhu Xiao, Yanlin Jia, Zhou Li
Summary: Homogenization heat treatment is a key procedure in controlling the second phase, enhancing composition uniformity, and workability of as-cast Cu-15Ni-8Sn alloy. This study found that electropulsing treatment (EPT) can significantly reduce treatment temperature and time, improve elongation and overall mechanical properties of the alloy.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2024)
Article
Nanoscience & Nanotechnology
Yuxuan Wang, Juntao Zou, Lixing Sun, Yunfei Bai, Zhe Zhang, Junsheng Cheng, Lin Shi, Dazhuo Song, Yihui Jiang, Zhiwei Zhang
Summary: A novel mechanical-heat-electricity synergistic method was proposed to enhance the mechanical properties of Cu-15Sn-0.3Ti alloy by forming annealing twins (ATs). The combination method of Rotary swaging (RS) and Electric pulse treatment (EPT) successfully induced recrystallization and refinement of the microstructure, leading to a significant increase in the strength of the alloy within a short time.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2024)
Article
Nanoscience & Nanotechnology
Zhiyi Ding, Jiangtao Xie, Tong Wang, Aiying Chen, Bin Gan, Jinchao Song
Summary: This study demonstrated the Ta-induced strengthening of CoCrNi-AlTi MEAs using nanoscale heterogeneous coherent precipitates. The addition of Ta and aging treatments significantly enhanced the mechanical properties of the alloy, including yield strength, ultimate tensile strength, and elongation.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2024)
Article
Nanoscience & Nanotechnology
Z. Y. You, Z. Y. Tang, B. Wang, H. W. Zhang, P. Li, L. Zhao, F. B. Chu, H. Ding
Summary: The mechanical properties and microstructural evolution of C-doped TRIP-assisted HEA under dynamic loading conditions were systematically investigated in this study. The results showed that dynamic tensile deformation led to an increase in yield strength and a decrease in ultimate tensile strength, with a trend towards increased total elongation. The primary deformation mechanisms shifted from TRIP and TWIP effects to deformation twinning and dislocations. The presence of carbides formed through C-doping hindered dislocation slip and promoted the activation of multiple twinning systems.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2024)
Article
Nanoscience & Nanotechnology
Feng Qin, Feihu Chen, Junhua Hou, Wenjun Lu, Shaohua Chen, Jianjun Li
Summary: Plastic instability in strong multilayered composites is completely suppressed by architecting nanoscale BCC Nb crystalline-amorphous CuNb interfaces.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2024)
