Article
Materials Science, Multidisciplinary
B. Sadeghi, P. Cavaliere
Summary: This study evaluated the bimodal Al-Mg alloy structure reinforced with carbon nanotubes after production through a modified flake metallurgy technique. The bimodal microstructure of the matrix allowed for high strength, uniform elongation, and strain hardening ability of the composites. The effect of reinforcing phases on the evolution of dislocation mechanisms was investigated, revealing the importance of reinforcing phases in modifying the interphase influence zone. The deformation mechanisms for unreinforced Al-Mg materials and CNT-reinforced Al-Mg composite were found to be different, with the latter exhibiting grain boundary and interface mediated straining.
JOURNAL OF MATERIALS SCIENCE
(2022)
Article
Materials Science, Multidisciplinary
Chao Yuan, Zhiming Zhang, Zhanqiu Tan, Lang Xu, Shuyan Zhang, Genlian Fan, Peng Zhang, Zhiqiang Li
Summary: The addition of magnesium was proposed to mitigate the negative effects of the native oxide layer in CNT/Al-Cu composites, resulting in significant improvement in ductility. The transformation of the oxide layer to spinel MgAl2O4 nano-phases by magnesium addition improved interfacial bonding, leading to a nearly twofold increase in fracture ductility in the final composites compared to CNT/Al-Cu composites.
MATERIALS TODAY COMMUNICATIONS
(2021)
Article
Materials Science, Multidisciplinary
Mohsen Saremi Ghareh Gol, Abolfazl Malti, Farshad Akhlaghi
Summary: Al-WC nanocomposites with different percentages (0.1%, 0.25%, 0.4%, and 0.6%) of WC nanoparticles were prepared using flake powder metallurgy. The nanocomposites were characterized using XRD, FESEM, and OM. The wear rate and friction coefficient of the samples were measured using a pin on disk wear testing machine. It was found that adding WC nanoparticles up to 0.4 vol% improved the density and hardness of the nanocomposites, resulting in enhanced wear resistance and frictional behavior. SEM analysis showed a transition from adhesive to abrasive wear mechanism with increased nano-particle content.
MATERIALS CHEMISTRY AND PHYSICS
(2023)
Review
Materials Science, Multidisciplinary
Behzad Sadeghi, Pasquale Cavaliere
Summary: Flake powder metallurgy (FPM) is a new powder metallurgy technology that utilizes flake metal powders obtained by low-speed ball milling to enhance strength and ductility. Control of powder shape is crucial for the preparation of advanced material structures. Future studies should focus on optimizing the processing route of FPM.
Article
Materials Science, Multidisciplinary
Ning Tian, Xiaoyun Song, Wenjun Ye, Songxiao Hui
Summary: The deformation mechanisms of a beta-rich alpha+beta titanium alloy were studied through superplastic tensile tests at different temperatures and strain rates. The alloy exhibited excellent superplasticity at 760 degrees C and 1 x 10(-3) s(-1), with a high fracture elongation and strain rate sensitivity.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Materials Science, Ceramics
Minjie Wang, Jianghua Shen, Biao Chen, Yunfei Wang, Junko Umeda, Katsuyoshi Kondoh, Yulong Li
Summary: The study showed that the strengthening capability of CNTs/Al decreased compared to PBM Al with increasing temperature and decreasing loading rate. However, CNTs played a crucial role in hindering dislocation movement and stabilizing the microstructure, leading to increased strength in Al-based MMCs. Experimental results also revealed improved strain rate sensitivity and reduced activation volume in CNTs-reinforced Al composites compared to pure aluminum.
CERAMICS INTERNATIONAL
(2022)
Article
Materials Science, Composites
Farhad Saba, Behzad Nateq, Seyed Abdolkarim Sajjadi, Faming Zhang, Simin Heydari
Summary: The study adopted a smart method of low energy milling followed by high energy dry-milling to fabricate a heterogeneous 1.5 wt% CNT/Al matrix, which exhibited excellent mechanical properties with enhanced strength and ductility. This process has the potential to be applied in developing strong and ductile metal matrix composites with different nanofillers.
COMPOSITES COMMUNICATIONS
(2021)
Article
Nanoscience & Nanotechnology
Haijun Pan, Wei Chaofan, Hongmin Zhang, Xinyu Li, Lin Liu, Jing Li, Zhiqiang Wu
Summary: This study investigates the evolution of strain rate sensitivity in a novel 3.6Al Medium Mn steel with an ultrafine equiaxed dual-phase structure. The effect of temperature and strain rate on the strain rate sensitivity index is evaluated using a bidirectional reciprocating strain rate jump experiment. Tensile tests at high-temperature deformation reveal that the strain rate sensitivity decreases with increasing strain rate and the decreasing trend slows down. Grain refinement enhances the strain rate sensitivity at 700 degrees C, while a new texture is observed at 750 degrees C, leading to higher strain rate sensitivity and better superplasticity.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2023)
Article
Materials Science, Multidisciplinary
Shuai Wang, FengBo Sun, WenQi Liu, Rui Zhang, Qi An, LuJun Huang, Jian Xiong, Lin Geng
Summary: Multilayer structured titanium matrix composites were fabricated through powder metallurgy, consisting of pure Ti layers and TiB reinforced Ti-6.5Al-2Zr-1Mo-1V (TA15) composite layers. The mechanical properties and deformation behavior of the composite under dynamic and quasi-static compressions were investigated. Dynamic compression improved the compressive flow stress and promoted the formation of {11 (2) over bar1} twins in both pure Ti layer and TA15 matrix.
MATERIALS CHARACTERIZATION
(2023)
Article
Materials Science, Multidisciplinary
Mahmut Can Senel, Mevlut Gurbuz
Summary: The addition of boron carbide and graphene to aluminum hybrid composites significantly improved Vickers hardness and compressive strength, with the best performance achieved at 30% boron carbide and 0.15% graphene content.
METALS AND MATERIALS INTERNATIONAL
(2021)
Review
Engineering, Manufacturing
Kishor Kumar Sadhu, Nilrudra Mandal, Rashmi R. Sahoo
Summary: The demand for lightweight structural and engine materials in automobile and aerospace applications has led to the development of aluminum-based composite materials, which have properties such as high strength, stiffness, and low density. The incorporation of SiC and graphene particles has been studied to improve the properties of aluminum metal matrix composites. The reinforcement mechanisms provided by SiC and graphene have shown significant improvements in thermal and mechanical properties.
JOURNAL OF MANUFACTURING PROCESSES
(2023)
Article
Materials Science, Multidisciplinary
Xudong Yang, Mingrui Xie, Weiting Li, Junwei Sha, Naiqin Zhao
Summary: This study investigates the influence of silicon (Si) content on the structural and mechanical properties of aluminum (Al) foams. The results show that an appropriate Si content can improve the cellular structure and increase the expansion rate, while excessive Si can deteriorate the cellular structure and decrease the expansion rate. The AlSi7 foams exhibit optimal compressive properties and a good balance between toughness and brittleness at a relative density of 0.15.
ADVANCED ENGINEERING MATERIALS
(2022)
Article
Nanoscience & Nanotechnology
Yuming Xie, Xiangchen Meng, Dongxin Mao, Zhiwei Qin, Long Wan, Yongxian Huang
Summary: Deformation-driven metallurgy was used to prepare graphene nanoplatelet-reinforced aluminum matrix composites, resulting in enhanced corrosion resistance through severe plastic deformation and homogeneously dispersed graphene nanoplatelets. The formation of a carbon-doped protective film in a chloride-containing environment contributed to the great corrosion inhibition mechanism of the composites.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Engineering, Manufacturing
Zhiming Zhang, Zan Li, Zhanqiu Tan, Haitao Zhao, Genlian Fan, Yanjin Xu, Ding-bang Xiong, Zhiqiang Li
Summary: Inspired by the design principle of nacre, a bottom-up strategy was employed in the fabrication of bioinspired laminated composites with a brick-and-mortar structure. The composites achieved a significant enhancement in strength with a slight compromise on ductility, leading to improved toughness compared to the corresponding Al matrix.
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
(2021)
Article
Chemistry, Multidisciplinary
Iris Carneiro, Jose V. Fernandes, Sonia Simoes
Summary: This study investigated the deformation behavior of aluminium reinforced by carbon nanotubes (Al/CNTs) nanocomposites during cold rolling. Deformation processes after production by conventional powder metallurgy routes can improve the microstructure and mechanical properties by reducing porosity. Metal matrix nanocomposites have great potential in producing advanced components, especially in the mobility industry, with powder metallurgy being one of the most commonly used production processes. Therefore, understanding the deformation behavior of nanocomposites is increasingly important. In this study, nanocomposites were produced via powder metallurgy and advanced characterization techniques were used to examine the microstructure of the powders and nanocomposites. The powder metallurgy route followed by cold rolling is reliable for Al/CNTs nanocomposites. The microstructural characterization revealed that the nanocomposites have a different crystallographic orientation than the Al matrix. CNTs in the matrix influence grain rotation during sintering and deformation. Mechanical characterization showed an initial decrease in hardness and tensile strength for the nanocomposites, which was attributed to the significant Bauschinger effect. The difference in mechanical properties between the nanocomposites and Al matrix was attributed to distinct texture evolution during cold rolling.
Article
Chemistry, Physical
Di Zhang, Xingyao Gao, Juanjuan Lu, Ping Lu, Julia Deitz, Jianan Shen, Hongyi Dou, Zihao He, Zhongxia Shang, C. Austin Wade, Xinghang Zhang, Aiping Chen, Haiyan Wang
Summary: Two-dimensional layered oxides and plasmonic nanostructures have attracted attention for their strong coupling and potential applications. In this study, a novel self-assembled Bi2MoO6 (BMO) 2D layered oxide incorporated with plasmonic Au nanoinclusions was demonstrated. The film exhibited typical LSPR and strong anisotropic optical and ferromagnetic properties.
Article
Nanoscience & Nanotechnology
Yang Li, Wei Wang, Di Zhang, Maria Baskin, Aiping Chen, Shahar Kvatinsky, Eilam Yalon, Lior Kornblum
Summary: Resistive switching devices, utilizing a simple and scalable material system of conductive oxide interfaces, have been developed for memory and computation. These devices offer advantages in performance and energy efficiency, and the conductive oxide interface serves both as the bottom electrode and as a reservoir of defects for switching. This new device, based on scalable and CMOS-compatible fabrication processes, opens up new design possibilities.
ADVANCED ELECTRONIC MATERIALS
(2023)
Article
Nanoscience & Nanotechnology
J. Song, Di Zhang, P. Lu, H. Wang, X. Xu, M. L. Meyerson, S. G. Rosenberg, J. Deitz, J. Liu, X. Wang, X. Zhang, H. Wang
Summary: Transition metal nitrides, such as TiN, are promising materials for optical metamaterials due to their plasmonic properties comparable to noble metals and high temperature stability. Vertically aligned nanocomposites (VANs) provide a platform for combining dissimilar functional materials into a single structure and exhibit anisotropic optical and magnetic responses. This study presents a new hybrid plasmonic metamaterial consisting of ferromagnetic CoFe2 nanosheets embedded in a plasmonic TiN matrix, demonstrating anisotropic properties and multifunctionality for light polarization modulation, optical switching, and integrated optics.
MATERIALS TODAY NANO
(2023)
Article
Chemistry, Multidisciplinary
Yizhi Zhang, Jiawei Song, Ping Lu, Julia Deitz, Di Zhang, Hongyi Dou, Jianan Shen, Zedong Hu, Xinghang Zhang, Haiyan Wang
Summary: Vertically aligned nanocomposite films have been fabricated using a pulsed laser deposition method, with embedded Co nanopillars in a ZrO2 matrix. By tuning the Co nanopillar density, the optical and magnetic properties of the films can be effectively controlled. These hybrid metamaterials show great potential for future integrated optical and magnetic device designs.
ADVANCED MATERIALS INTERFACES
(2023)
Article
Engineering, Electrical & Electronic
Mary Ann Sebastian, Charles Ebbing, Di Zhang, Jie Jian, Jijie Huang, Yifan Zhang, Haiyan Wang, Victor Ogunjimi, Mohan Panth, Bibek Gautam, Judy Wu, Timothy Haugan
Summary: An important research goal in the applications of high temperature superconductor YBCO thin films is to increase both the critical current density and the isotropic nature of the film. This research explores the effect of Ca-doped YBCO space layers on the interface between BZO nanorods and YBCO in multilayer composite films under suitable conditions. The interplay of adding BaZrO3 to YBCO, varying pulsed laser deposition conditions for multilayer film growth, and employing calcium-doped YBCO space layers, and the resulting impact on film microstructures and superconducting properties, will be presented.
IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY
(2023)
Article
Engineering, Electrical & Electronic
Mary Ann Sebastian, Charles Ebbing, Di Zhang, Shikhar Misra, Jijie Huang, Han Wang, Haiyan Wang, Mohan Panth, Victor Ogunjimi, Judy Wu, Timothy Haugan
Summary: The addition of insulating nano-phase materials, such as BZO and BHO nanorods, enhances the in-field critical current density of YBCO thin films. This research explores the optimization of BHO nanorod additions and demonstrates its beneficial properties in a wide range of temperatures and magnetic fields suitable for various applications.
IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY
(2023)
Article
Nanoscience & Nanotechnology
Zhen Zhang, Zhifei Hao, Hongbin Wang, Di Zhang, Jishan Zhang
Summary: A novel design strategy for stress corrosion cracking-resistant aluminum alloys is proposed in this study, which improves the resistance to corrosion by optimizing the microstructure and microstress distribution.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2023)
Article
Chemistry, Physical
Nicholas Cucciniello, Alessandro R. Mazza, Pinku Roy, Sundar Kunwar, Di Zhang, Henry Y. Feng, Katrina Arsky, Aiping Chen, Quanxi Jia
Summary: With the anticipated doubling of energy demand in the next three decades, there is a pressing need to advance the technology of energy harvesting and storage for renewable energy. This study focuses on a specific subset of dielectric materials, ferroelectrics, for energy storage. By exploring the influence of crystallographic orientation on the microstructure and properties, the research offers insights into enhancing energy storage performance.
Article
Chemistry, Physical
Lianxu Ye, Fan Wu, Ruixing Xu, Di Zhang, Juanjuan Lu, Chuanlong Wang, Anjiang Dong, Sichen Xu, Lejun Xue, Zixin Fan, Longjie Xu, Kaifeng Li, Dong Li, Ahmed Kursumovic, Run Zhao, Rujun Tang, Lei Qiu, Haiyan Wang, Judith L. MacManus-Driscoll, Qingshen Jing, Weiwei Li, Hao Yang
Summary: Integrating flexible and wearable sensors into face masks provides valuable insights into personal and public health. We have designed an effective human breath monitoring face mask based on a flexible La0.7Sr0.3MnO3 (LSMO)/Mica respiration sensor. This sensor exhibits super-stability and multi-modal capabilities in continuous and long-time monitoring of human breath.
Article
Chemistry, Multidisciplinary
Juanjuan Lu, Di Zhang, Robynne L. Paldi, Zihao He, Ping Lu, Julia Deitz, Ahmad Ahmad, Hongyi Dou, Xuejing Wang, Juncheng Liu, Zedong Hu, Bo Yang, Xinghang Zhang, Anter A. El-Azab, Haiyan Wang
Summary: This study investigates a new oxide-metal nanocomposite system, CeO2-Au, and explores the tunable optical properties of different Au phase morphologies. The CeO2-Au thin film exhibits hyperbolic dispersion at high wavelengths, indicating its potential for applications in superlenses and metamaterials. Additionally, an abnormal in-plane epitaxy of Au nanopillars following the CeO2 matrix is discovered, providing insights into the formation mechanisms of nanocomposites.
MATERIALS HORIZONS
(2023)
Article
Automation & Control Systems
Sundar Kunwar, Zachary Jernigan, Zach Hughes, Chase Somodi, Michael D. D. Saccone, Francesco Caravelli, Pinku Roy, Di Zhang, Haiyan Wang, Quanxi Jia, Judith L. L. MacManus-Driscoll, Garrett Kenyon, Andrew Sornborger, Wanyi Nie, Aiping Chen
Summary: Interface-type (IT) metal/oxide Schottky memristive devices are demonstrated to have reliable analog resistive switching (RS) characteristics using a simple Au/Nb-doped SrTiO3 (Nb:STO) Schottky structure. By modulating the Au/Nb:STO Schottky barrier through charge trapping and detrapping, high repeatability and stability are achieved during endurance and retention tests. The Au/Nb:STO IT memristive device exhibits versatile synaptic functions and achieves a high recognition accuracy of 94.72% for large digit recognition using a simulated artificial neural network.
ADVANCED INTELLIGENT SYSTEMS
(2023)
Article
Chemistry, Physical
Zihao Yang, Xiucheng Wei, Pinku Roy, Di Zhang, Ping Lu, Samyak Dhole, Haiyan Wang, Nicholas Cucciniello, Nag Patibandla, Zhebo Chen, Hao Zeng, Quanxi Jia, Mingwei Zhu
Summary: We have achieved large-scale, ultrathin superconducting NbN thin films on 300 mm Si wafers using a high-volume manufacturing PVD system. The NbN thin films exhibit remarkable structural uniformity and high superconducting quality across the entire wafer, thanks to the use of an AlN buffer layer. The NbN films deposited on AlN-buffered Si substrates show significantly higher superconducting critical temperature and upper critical magnetic field compared to those without AlN.
Article
Chemistry, Multidisciplinary
Zhong-Hong Zhu, Di Zhang, Jian Chen, Hua-Hong Zou, Zhiqiang Ni, Yutong Yang, Yating Hu, Ruiyuan Liu, Guangxue Feng, Ben Zhong Tang
Summary: A biocompatible porphyrin-based pure organic porous nanocage with large cavity, high porosity as well as enhanced type I and type II reactive oxygen species generation is developed for photodynamic therapy.
MATERIALS HORIZONS
(2023)
Article
Chemistry, Multidisciplinary
Pinku Roy, Di Zhang, Alessandro R. Mazza, Nicholas Cucciniello, Sundar Kunwar, Hao Zeng, Aiping Chen, Quanxi Jia
Summary: Topologically protected non-trivial spin textures give rise to novel phenomena, such as the topological Hall effect. This study investigates the Hall effect in SrRuO3/La0.42Ca0.58MnO3 bilayers and finds that the proximity effect of LCMO plays a critical role. The reduction in SRO thickness enhances THE-like features.
Article
Chemistry, Multidisciplinary
Sichuang Xue, Xin Li Phuah, Jie Jian, Qiang Li, Jin Li, Bo Yang, Di Zhang, Han Wang, Thomas Tsakalakos, Amiya K. Mukherjee, Haiyan Wang, Xinghang Zhang
Summary: Flash-sintered ceramics show better mechanical deformability than conventional sintered ceramics, and the high-density defects formed under electrical field plays a key role. However, direct experimental evidence for defect formation and evolution is lacking. In this study, in situ TEM experiments were conducted to observe the defect dynamics in flash-sintered and conventionally sintered TiO2. The results showed that both types of samples exhibited the coalescence of point defects and the formation of stacking faults under electrical field. Surprisingly, the fault growth rate in flash-sintered samples was 10 times higher than that in conventionally sintered samples, and the formation of the Magneli phase was only observed in flash-sintered samples.
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)
