Article
Chemistry, Physical
Shengqing Hu, Kai Wang, Simu Ma, Haoran Qi, Naijun He, Fuguo Li
Summary: A356 aluminum alloy reinforced by AlCoCrFeNi high-entropy alloy (HEA) particles was fabricated using friction stir processing (FSP) and subsequent heat treatment. Solution and aging treatments were performed to control the interface microstructure and explored its effect on tensile properties. The interface showed a dual-layered core-shell structure, with the shell thickness increasing with solution time. The microstructure in the shell layers consisted of a solid solution with increasing aluminum content, forming radial-shaped solid solution phase close to the core and scattered solid solution grains with high Ni content close to the matrix alloy. The FSPed composite exhibited enhanced tensile stress and strain compared to the FSPed A356 alloy. The overgrowth of the shell layer decreased tensile strength and ductility due to the formation of a radial-shaped solid solution phase.
Article
Materials Science, Multidisciplinary
Tatiana Kalashnikova, Andrey Chumaevskii, Kirill Kalashnikov, Evgeny Knyazhev, Denis Gurianov, Alexander Panfilov, Sergey Nikonov, Valery Rubtsov, Evgeny Kolubaev
Summary: Friction stir processing was used to treat additive workpieces, and the hardening regularities and grain size of two alloys were studied. The fine-grained metal in the stir zone had higher microhardness and tensile strength than the base metal.
Article
Engineering, Manufacturing
Bin Wang, Lili Xu, Bo Guo, Hongyan Zhang
Summary: Friction-stir riveting is a new mechanical fastening technique that combines spinning and extruding actions to produce joints with high strength. By using improved rivet design and tooling, along with optimized parameters, joints with peak load exceeding 8 kN were achieved in connecting 2-mm AA5052 sheets, showing higher strength than other mechanical joining techniques.
JOURNAL OF MANUFACTURING PROCESSES
(2021)
Article
Materials Science, Multidisciplinary
Xiaopeng Li, Zeyu Zhang, Yong Peng, Dejun Yan, Zhanqiu Tan, Qi Zhou, Kehong Wang
Summary: This study successfully prepared nano-Al4C3 reinforced aluminum matrix composites through friction stir processing, which improved the ductility of the composite while maintaining the original strength. The main strengthening mechanisms include a strong Al4C3-Al interface, homogeneous dispersion, nano size, and dynamic recrystallization during FSP.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2021)
Article
Automation & Control Systems
Wahaz Nasim, Hrishikesh Das, Piyush Upadhyay, Mert Efe
Summary: Friction stir processing (FSP) was used to improve the local formability of high-strength commercial aluminum sheets. The processed sheets showed significant improvements in formability compared to the base conditions. The formability improvement was retained even after natural aging, and higher spindle speeds during processing resulted in increased formability. FSP was successfully incorporated into a robotic platform for commercial applications.
INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY
(2023)
Article
Nanoscience & Nanotechnology
Peng Li, Yiqi Tong, Xingxing Wang, Yutaka S. Sato, Honggang Dong
Summary: A novel 6061-T6 aluminum matrix composites reinforced by AlCoCrFeNi2.1 high-entropy alloy were prepared via friction stir processing and strengthened by T6 heat treatment. The content of reinforcement had significant effects on the microstructure and mechanical properties of the composites. The results demonstrated that AlCoCrFeNi2.1 HEA was a suitable reinforcement material, and its presence effectively inhibited the formation and growth of intermetallic compounds.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2023)
Article
Engineering, Manufacturing
Avik Samanta, Robert J. Seffens, Hrishikesh Das, Anthony D. Guzman, Timothy J. Roosendaal, David Garcia, Miao Song, Glenn J. Grant, Saumyadeep Jana
Summary: This study employs friction stir processing to selectively modify the microstructure of high-pressure die-cast aluminum alloy A380. The technique effectively breaks down dendrites and Si particles, resulting in a homogenized distribution and refined microstructure. The process also eliminates porosity and improves the material's mechanical properties.
JOURNAL OF MANUFACTURING PROCESSES
(2022)
Article
Materials Science, Multidisciplinary
Tatiana Kalashnikova, Evgeny Knyazhev, Denis Gurianov, Andrey Chumaevskii, Andrey Vorontsov, Kirill Kalashnikov, Natalya Teryukalova, Evgeny Kolubaev
Summary: In this study, friction stir processing was used to investigate Al-Mg-Sc alloy samples with the addition of Mo powder. The results showed that at least three passes of tool stirring were required for a uniform distribution of Mo powder in the stir zone, and the number of passes increased with the Mo content. No intermetallic compounds were formed in the stir zone due to the temperature specifics of the process, and Mo was distributed as separate particles of different sizes. The ultimate strength of the composite materials after four passes was approximately 387 MPa in the stir zone, and the relative elongation of the material increased from 15 to 24%. The friction coefficient of the material decreased with the addition of 5 wt% Mo, but returned to the original material values with a further increase in Mo content.
Article
Materials Science, Multidisciplinary
Shoufa Liu, Moslem Paidar, Sadok Mehrez, Olatunji Oladimeji Ojo, Ibrahim Mahariq, Ibrahim Elbadawy
Summary: This study investigates the friction stir processing/manufacturing of 316 stainless steel particles reinforced AA6061 Al matrix composites with varying tool rotational speeds. The results show that the processing route produces no particle-matrix reaction and forms dislocation entanglements. The mechanical properties of the composites are improved through particle fragmentation and uniform distribution of dislocations.
MATERIALS CHARACTERIZATION
(2022)
Article
Nanoscience & Nanotechnology
Soumyabrata Basak, Mounarik Mondal, Kun Gao, Sung-Tae Hong, Sam Yaw Anaman, Hoon-Hwe Cho
Summary: Experimental studies on friction stir butt-welded aluminum-clad-aluminum thin sheets were conducted, and the joint's microstructure and mechanical properties were evaluated using microscopy and analysis methods.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2022)
Review
Engineering, Manufacturing
Huijie Zhang, Baoxin Zhang, Qiuzhi Gao, Jianling Song, Guoliang Han
Summary: Graphene is an ideal reinforcement for the fabrication of aluminum matrix composites (AMCs), and Friction Stir Processing (FSP) is an ideal candidate for producing high-performance graphene-reinforced AMCs. The addition of graphene affects the structure and properties evolution of AMCs, while process conditions and microstructure evolutions also play a critical role in determining the properties of the composites.
JOURNAL OF MANUFACTURING PROCESSES
(2021)
Article
Materials Science, Multidisciplinary
Mohammad Reza Akbarpour, Homayoun Mousa Mirabad, Farid Gazani, Iman Khezri, Amirhossein Ahmadi Chadegani, Ali Moeini, Hyoung Seop Kim
Summary: This article discusses the manufacturing methods and microstructural characteristics of Cu-SiC metal matrix composites to explore their potential for thermal management applications.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Review
Polymer Science
Abdulbasit Abdulqadir Hamza, Shawnam Rashied Jalal
Summary: The surface or joint properties of thermoplastic polymer materials significantly impact engineering applications. This study analyzed how tool design and friction stir processing parameters affect the morphology, wear, powder dispersion, and mechanical properties of polymer-based matrix composites. The findings revealed that stationary shoulder tools outperformed traditional tools, and rotational speed, welding speed, and vibration had significant effects on heat generation, mixing, and surface quality.
EUROPEAN POLYMER JOURNAL
(2022)
Article
Metallurgy & Metallurgical Engineering
Fatemeh Iranshahi, Mohammad Bagher Nasiri, Fernando Gustavo Warchomicka, Christof Sommitsch
Summary: Degradation rate is crucial for biodegradable implants. ZKX50 Mg alloy, with favorable biocompatibility and mechanical properties, shows potential as a biodegradable implant material. Research investigates the degradation rate and corrosion behavior of ZKX50, focusing on microstructure constituents and morphology. Microstructure refinement through methods like electron beam processing and friction stir processing improves corrosion resistance. The study emphasizes the importance of microstructure control in enhancing mechanical properties and corrosion resistance.
JOURNAL OF MAGNESIUM AND ALLOYS
(2022)
Article
Materials Science, Multidisciplinary
Y. Tao, Z. Zhang, P. Xue, D. R. Ni, B. L. Xiao, Z. Y. Ma
Summary: Friction stir welding (FSW) of 2198-T8 Al-Li alloys was conducted under both air cooling and water cooling conditions. Results showed that under air cooling condition, the heat affected zone had the lowest hardness and post weld artificial aging improved the joint hardness, while water cooling had little effect on hardness and joint strength.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2022)
Article
Metallurgy & Metallurgical Engineering
Ajay Kumar, Ranjit Bauri
OXIDATION OF METALS
(2019)
Article
Materials Science, Ceramics
Jella Gangadhar, Ankur Maheshwari, Rajendra K. Bordia, C. N. Shyam Kumar, Christian Kubel, Ravindran Sujith
CERAMICS INTERNATIONAL
(2020)
Article
Chemistry, Physical
C. N. Shyam Kumar, Ranjit Bauri, G. Srinivas Reddy
JOURNAL OF ALLOYS AND COMPOUNDS
(2020)
Article
Nanoscience & Nanotechnology
Ummen Sabu, C. N. Shyam Kumar, G. Logesh, Mohammed Rashad, Georgian Melinte, Anand Joy, Christian Kuebel, M. Balasubramanian
Summary: The research investigated the formation of alpha-Al2O3 platelets using eggshell membranes as bio-templates, highlighting the crucial role of biomacromolecules and functional groups present on the eggshell membrane. The growth of alpha-Al2O3 platelets was carefully studied using scanning and transmission electron microscopes, leading to a proposed growth mechanism involving the eggshell membrane. This study offers insights for the development of alpha-Al2O3 anisotropic structures through a bio-templated approach.
SCRIPTA MATERIALIA
(2021)
Article
Chemistry, Physical
Soupitak Pal, Jenifer Barrirero, Mario Lehmann, Quentin Jeangros, Nathalie Valle, Franz-Josef Haug, Aicha Hessler-Wyser, C. N. Shyam Kumar, Frank Muecklich, Tom Wirtz, Santhana Eswara
Summary: Multiscale characterization of the hydrogenation process of silicon solar cell contacts based on c-Si/SiOx/ncSiCx(p) has been performed by combining dynamic secondary ion mass-spectrometry (D-SIMS), atom probe tomography (APT), and transmission electron microscopy (TEM). This new methodology sheds new insights on hydrogen distribution in technologically important photovoltaic materials.
APPLIED SURFACE SCIENCE
(2021)
Article
Materials Science, Multidisciplinary
Franz-Josef Haug, Audrey Morisset, Philippe Wyss, Mario Lehmann, Aicha Hessler-Wyser, Quentin Jeangros, Andrea Ingenito, Christophe Ballif, C. N. Shyam Kumar, Santhana Eswara, Nathalie Valle
Summary: The study investigates polysilicon recombination junctions in which the n-type bottom layer also functions as a passivating contact to the silicon surface. It is found that modifying the interface with C, O, or a combination of these can suppress undesired dopant diffusion without interfering with the diffusion of H, an essential element for passivating defects on the silicon wafer's surface. This modification allows for implied open-circuit voltages (iV(oc)) of up to 740 mV with contact resistivities less than 40 m omega cm(2).
PHYSICA STATUS SOLIDI-RAPID RESEARCH LETTERS
(2021)
Article
Engineering, Electrical & Electronic
C. N. Shyam Kumar, Saba Tabean, Audrey Morisset, Philippe Wyss, Mario Lehmann, Franz-Josef Haug, Quentin Jeangros, Aioha Hessler-Wyser, Nathalie Valle, Tom Wirtz, Santhana Eswara
Summary: This study evaluates the secondary electron dopant contrast in scanning electron microscopy and helium ion microscopy on boron implanted silicon samples, showing the impact of thermal firing on activation efficiency. The results demonstrate that HIM provides higher contrast than SEM and has a clear advantage in terms of activation efficiency.
SEMICONDUCTOR SCIENCE AND TECHNOLOGY
(2021)
Article
Materials Science, Coatings & Films
R. Damodaram, Pranav Rai, S. Cyril Joseph Daniel, Ranjit Bauri, Devinder Yadav
Summary: This work demonstrates the feasibility of friction surfacing as a tool to repair surface cracks by depositing a self-mating coating. The optimized process parameters depend on the crack dimensions for complete filling, and the microstructure in the coating evolves through dynamic recrystallization process. This method opens up a new way of repairing surface cracks and enhancing the service life of engineering components.
SURFACE & COATINGS TECHNOLOGY
(2021)
Article
Energy & Fuels
R. Venkatesan, Ranjit Bauri, Kishore Kumar Mayuranathan
Summary: Zinc vanadium oxide (ZVO) synthesized by hydrothermal method exhibits excellent performance and cyclic stability in zinc-ion batteries, with high capacity and efficiency. An electrode sample with a single-phase and multilayered ultralong nanobelt structure can be obtained through a 48-hour reaction time.
Article
Optics
Kishore Kumar Mayuranathan, Chippy Alphons Augustine, Ranjit Bauri
Summary: Different polymorphs of bismuth molybdate (BMO) exhibit varying photo-catalytic activity, with the beta phase showing good photo electrochemical (PEC) performance but poor stability. In this study, mixed-phase BMO compounds were successfully synthesized, predominantly consisting of the gamma-BMO phase. These compounds exhibited better photo-electrochemical performance, with lower photocurrent density and charge transfer resistance compared to samples with higher alpha and beta phase content.
JOURNAL OF LUMINESCENCE
(2022)
Article
Environmental Sciences
Kishore Kumar Mayuranathan, Ranjit Bauri
Summary: This study investigated the treatment of bauxite residue (BR) with phosphoric acid to recover valuable metal phosphates. The results showed that the treated residue contained aluminum and silicon phosphates, while the supernatant contained iron and aluminum. The water leaching test demonstrated that the high concentration phosphoric acid treatment effectively immobilized the constituents of BR. Additionally, the metal phosphates obtained from the treatment could be melted at a high temperature, making them suitable for various applications such as glass forming.
JOURNAL OF MATERIAL CYCLES AND WASTE MANAGEMENT
(2023)
Article
Chemistry, Analytical
Lluis Yedra, C. N. Shyam Kumar, Alisa Pshenova, Esther Lentzen, Patrick Philipp, Tom Wirtz, Santhana Eswara
Summary: This study demonstrates a new method to quantify SIMS data using a combination of EDX and SIMS, with the novelty lying in the use of a diffusion couple to cover a wide range of composition space in a single sample. By correlating EDX and SIMS profiles, the SIMS signal intensity can be converted to concentrations far below the detection limit of the EDX technique.
JOURNAL OF ANALYTICAL ATOMIC SPECTROMETRY
(2021)
Article
Nanoscience & Nanotechnology
Emil R. Mamleyev, Fabian Falk, Peter G. Weidler, Stefan Heissler, Sagar Wadhwa, Omar Nassar, C. N. Shyam Kumar, Christian Kuebel, Christof Woell, Monsur Islam, Dario Mager, Jan G. Korvink
ACS APPLIED MATERIALS & INTERFACES
(2020)
Article
Chemistry, Multidisciplinary
C. N. Shyam Kumar, Manuel Konrad, Venkata Sai Kiran Chakravadhanula, Simone Dehm, Di Wang, Wolfgang Wenzel, Ralph Krupke, Christian Kuebel
NANOSCALE ADVANCES
(2019)
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)