Article
Materials Science, Multidisciplinary
Gaurav Kumar, Tanmay K. Bhandakkar, Sushil K. Mishra, Amol A. Gokhale
Summary: Based on the different carbon content and processing technique, the austenite morphology in steels can be film-like or blocky. Experiments have shown that the film-like morphology of austenite has a higher resistance to strain-induced martensitic transformation compared to the blocky morphology. In this study, a micromechanical model is developed using aspect ratio to distinguish austenite morphology, which demonstrates that the presence of an unfavorable stress field discourages the transformation of film-like austenite to martensite, leading to its stability compared to the blocky version.
MATERIALS SCIENCE AND TECHNOLOGY
(2023)
Article
Nanoscience & Nanotechnology
Yi Li, Qingwen Guan, Binbin He
Summary: The present study investigates the effect of stress or strain-induced martensite on the tensile properties of medium Mn steel treated by quenching and partitioning/tempering. The stress-assisted martensite, characterized by large and continuous martensite blocks, leads to premature fracture and limited tensile ductility (12.8%). By employing a pre-deformation and tempering strategy, the amount of stress-assisted martensite is reduced while promoting the formation of strain-induced martensite, transforming the original soft and brittle medium Mn steel into a strong and ductile material, resulting in an increase in ultimate tensile strength and total elongation to 533 MPa and 28.4%, respectively.
SCRIPTA MATERIALIA
(2023)
Article
Materials Science, Multidisciplinary
Chunliang Mao, Chenxi Liu, Liming Yu, Huijun Li, Yongchang Liu
Summary: This study focuses on the influence of annealing twins and cooling rates on the discontinuity of lath martensite transformation rate in low carbon steel, revealing that the transformation rate peaks are hierarchical during the cooling process. A new localized stress field theory is proposed to interpret the evolution of these peaks with changing cooling rate.
MATERIALS & DESIGN
(2021)
Review
Materials Science, Multidisciplinary
Adriel Wong
Summary: This article reviews the factors affecting austenite stability and transformation kinetics, as well as models predicting these properties. By assessing the predictive capabilities of models using experimental data, several key parameters have been identified to describe transformation behavior. Further research is encouraged to develop physics-based models that could enhance the understanding of austenite stability and transformation.
MATERIALS SCIENCE AND TECHNOLOGY
(2022)
Article
Nanoscience & Nanotechnology
Liyang Zeng, Xiangyu Song, Nailu Chen, Yonghua Rong, Xunwei Zuo, Na Min
Summary: This study investigates the TRIP effect in austenitic steels by simulating experiments and using microstructural characterization methods. The results show that different types of martensitic transformations are associated with changes in SHR at different stages of deformation, and the contribution of DAMAI effect on SHR is greater than that of SIMT effect.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2022)
Article
Chemistry, Physical
Zhenlong Zhu, Yilong Liang, Cunhong Yin, Xianli Ren, Ming Yang, Jianghe Zou
Summary: This study investigates the effect of friction-induced retained austenite transformation to martensite on the surface wear performance of steel. The results show that the size of the retained austenite plays a key role in controlling the mechanical stability of austenite, with smaller size and uniform distribution leading to higher stability and reduced wear. Microstructural characterization reveals the formation and extension mechanism of cracks during wear, providing a basis for controlling retained austenite during production.
APPLIED SURFACE SCIENCE
(2022)
Article
Materials Science, Characterization & Testing
Wanhua Liang, James Pineault, F. Albrecht Conle, Timothy H. Topper
Summary: Carburization, a commonly used heat treatment in industries, can improve the fatigue performance of components. It results in untransformed austenite in a transformed matrix, and the subsequent transformation of retained austenite due to service loading can alter beneficial residual stresses.
JOURNAL OF TESTING AND EVALUATION
(2022)
Article
Chemistry, Physical
Aleksandra Bartkowska, Christina E. Lekka, Ludovico Andrea Alberta, Irena Spasojevic, Eva Pellicer, Jordi Sort
Summary: In this study, porous FeMn alloys with additions of Ag were fabricated and their microstructure and properties were analyzed through experimental and theoretical methods. The results showed that the addition of Ag caused changes in the crystallographic structure, resulting in increased yield stress and magnetization. The theoretical calculations revealed the preferred locations of Ag atoms and their interactions with Fe and Mn atoms, which explained the observed changes in structure and properties.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Multidisciplinary Sciences
A. Plotkowski, K. Saleeby, C. M. Fancher, J. Haley, G. Madireddy, K. An, R. Kannan, T. Feldhausen, Y. Lee, D. Yu, C. Leach, J. Vaughan, S. S. Babu
Summary: Residual stresses impact the performance and reliability of manufactured goods and are commonly found in casting, welding, and additive manufacturing. By utilizing operando neutron diffraction, the authors investigate the lattice strain evolution during the printing of a low-temperature transformation steel, providing insights into the mechanisms involved and enabling the design of residual stress states and property distributions in additively manufactured components.
NATURE COMMUNICATIONS
(2023)
Article
Nanoscience & Nanotechnology
Saadi A. Habib, Steven P. Mates, Fan Zhang, Mark R. Stoudt, James S. Zuback, Olaf Borkiewicz
Summary: This study systematically investigates the influence of different heat treatments on the volume fraction and stability of retained austenite in AM 17-4N SS, and shows that by altering these factors, the DIMT process can be utilized to vary the strength, work hardening, and ductility, enabling its use in various applications.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2023)
Article
Materials Science, Multidisciplinary
Xi Xie
Summary: A non-isothermal phase field model is used to study the magnetic-thermo-mechanical coupled deformation of ferromagnetic shape memory alloy. The simulation results show that the maximum magnetic-induced strain and local highest temperature rise decrease with increasing loading level, and their relationship with loading frequency is non-monotonic.
JOURNAL OF MATERIALS SCIENCE
(2022)
Article
Materials Science, Multidisciplinary
John S. S. Aristeidakis, Gregory N. N. Haidemenopoulos
Summary: In this study, a physically based constitutive and transformation kinetics model is presented to describe the formation of stress-assisted and strain-induced martensite and twin in steels containing austenite. The deformation behavior of different phases is modeled using dislocation density, and the macroscopic response of the material is calculated using a homogenization method. The model predicts the fractions of different martensite and twin phases and can be used in the design of new alloys with exceptional properties.
Article
Chemistry, Physical
Joanna Kowalska, Janusz Rys, Grzegorz Cempura
Summary: The study on Fe-21.2Mn-2.73Al-2.99Si steel deformed at ambient temperature reveals the formation of hexagonal ε-martensite and gradually increasing cubic α′-martensite within its microstructure as deformation progresses. Both mechanical twinning and strain-induced phase transformations were found to contribute to the increase in mechanical properties of the steel.
Article
Materials Science, Multidisciplinary
Adriana Eres-Castellanos, Lucia Morales-Rivas, Jose Antonio Jimenez, Francisca G. Caballero, Carlos Garcia-Mateo
Summary: This study analyzed the effect of compressive deformation on the macro and micro-texture of a bainitic microstructure in a medium-carbon high-silicon steel subjected to ausforming treatments at different temperatures. It was found that lower deformation temperatures resulted in more pronounced transformation textures and variant selection phenomena.
METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE
(2021)
Article
Chemistry, Multidisciplinary
Tuomo Nyyssönen, Mikael Malmström, David Lindell, Anton Jansson, Johan Lönnqvist, Linda Bäcke, Bevis Hutchinson
Summary: In this study, the importance of austenite annealing twin boundaries in calibrating laser ultrasonic measurements for gauging austenite grain size during the thermomechanical processing of high-strength low-alloy steels was demonstrated. It was shown how disregarding twins during calibration and using the method for a broad range of steels can lead to errors in grain size measurements. However, calibration using alloys with a metastable austenite microstructure at room temperature, taking into account annealing twins, was suitable for a broad range of HSLA steels. Verification of the laser ultrasonic results was conducted using electron backscatter diffraction, as light optical microscopy does not allow the characterization of annealing twins in low-alloy steel. It was also highlighted that differences in twinning density occur even for alloys with a roughly similar stacking fault energy, emphasizing the importance of annealing twins in laser ultrasonic measurements for industrial use.
APPLIED SCIENCES-BASEL
(2023)
Review
Chemistry, Physical
Nick Hoksbergen, Remko Akkerman, Ismet Baran
Summary: The wind energy sector is growing rapidly, leading to larger wind turbines and increased erosion damage from rain droplets. Coating materials are used to protect the blades, and the Springer model is commonly used to predict the fatigue lifetime of these coated substrates. However, the model's sensitivity to input parameters and lack of physical representation highlight the need for more accurate prediction methods. A proposed framework consisting of a contact pressure model, coating stress model, and fatigue strength model is sufficient to capture the underlying physics of rain erosion on wind turbine blades.
Article
Mechanics
R. D. R. Sitohang, W. J. B. Grouve, L. L. Warnet, S. Wijskamp, R. Akkerman
Summary: The influence of in-plane fiber waviness on the first ply failure of quasi-isotropic thermoplastic composite laminates was examined. The severity of waviness affects the stress at first failure and the development of compressive damage. The stress at first failure decreases initially with increasing maximum waviness angle and stabilizes when the angle exceeds 20 degrees. Kinking failure was found to be the dominant failure mode for waviness angles up to about 45 degrees.
COMPOSITE STRUCTURES
(2022)
Correction
Engineering, Manufacturing
E. R. Pierik, W. J. B. Grouve, S. Wijskamp, R. Akkerman
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
(2023)
Article
Materials Science, Composites
Sebastiaan Van den Berg, Martin Luckabauer, Sebastiaan Wijskamp, Remko Akkerman
Summary: Currently, obtaining consistent values for the anisotropic electrical conductivity of fabric ply based thermoplastic composites is challenging. This study used six-probe voltage measurements combined with a numerical evaluation method to obtain the anisotropic electrical conductivity of this type of material. The effect of probe distance and specimen dimensions on the test results was investigated. The measurements showed low specimen to specimen variability and the obtained electrical conductivities agreed with values obtained by the rule of mixtures and the two-probe measurement method. The conducted research demonstrates that both the in- and out-of-plane electrical conductivity of polymer composites reinforced with carbon fabrics can be reliably determined simultaneously with one experiment.
JOURNAL OF THERMOPLASTIC COMPOSITE MATERIALS
(2023)
Article
Engineering, Civil
T. H. Hoksbergen, R. Akkerman, I. Baran
Summary: This study aims to reduce the maintenance cost and levelized cost of energy of wind turbine blades and design reliable blades. By investigating the impact mechanisms and establishing a numerical model, the dynamic contact pressure between the liquid droplet and the elastic target is determined to understand the causes of rain erosion, and it can be used to determine the mechanical performance of coating systems and optimize materials and geometry.
JOURNAL OF WIND ENGINEERING AND INDUSTRIAL AERODYNAMICS
(2023)
Article
Engineering, Manufacturing
A. N. Vu, W. J. B. Grouve, R. Akkerman
Summary: Overbraiding is an efficient manufacturing process for complex composite preforms. Process simulations with a new yarn interaction model are used to predict the braid angle and coverage of braid reinforced products. Validations and numerical tests show that the braid angle and convergence zone length are affected by the coefficient of friction until reaching a steady state.
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
(2023)
Article
Polymer Science
Kuan Chen, Liangyong Chu, Wouter J. B. Grouve, Erik G. de Vries, Remko Akkerman, Ningzhong Bao, Matthijn B. de Rooij
Summary: A simple method based on an air bubble on a substrate in molten thermoplastic is proposed to measure the contact angle between thermoplastics and solid surfaces. This method is suitable for high viscosity and high melting point thermoplastics.
JOURNAL OF APPLIED POLYMER SCIENCE
(2023)
Article
Materials Science, Composites
Jagadeesh N. Swamy, Wouter J. B. Grouve, Sebastiaan Wijskamp, Remko Akkerman
Summary: The current study focuses on understanding the role of different void removal mechanisms in VBO processing of advanced thermoplastic composites. Two commercially available Carbon/Poly-Ether-Ketone-Ketone (C/PEKK) tape materials were evaluated, showing variations in void reduction and removal mechanisms due to differences in diffusion behavior and gas volume that needs to be removed.
JOURNAL OF REINFORCED PLASTICS AND COMPOSITES
(2023)
Article
Materials Science, Composites
Jagadeesh N. Swamy, Wouter J. B. Grouve, Sebastiaan Wijskamp, Remko Akkerman
Summary: This study explores the possibility of two-step automated fiber placement and vacuum-bag-only consolidation for advanced thermoplastic composites. Two commercially available carbon fiber reinforced Poly-Ether-Ketone-Ketone (C/PEKK) thermoplastic tapes were evaluated, and in-plane air evacuation channels were created by deliberately introducing gaps between the tapes in the preforms. The results show that the VBO consolidation of preforms with and without gaps yielded good consolidation quality, and the presence of gaps possibly helps accelerate the gas evacuation process.
JOURNAL OF THERMOPLASTIC COMPOSITE MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Georgios Kafkopoulos, Vanessa M. Marinosci, Joost Duvigneau, Wouter J. B. Grouve, Sebastiaan Wijskamp, Matthijn B. de Rooij, G. Julius Vancso, Remko Akkerman
Summary: This work presents a high-performance composite adhesive system that achieves strong adhesion and high interfacial toughness in metal-polymer bonding. By applying SiPDA layers on the titanium surface, the interfacial fracture toughness is significantly improved and durable bond stability is maintained after hot/wet conditioning. These findings suggest that polydopamine-based coatings have great potential to achieve stable interfaces in the next generation of high-performance metal-polymer hybrid materials.
ADVANCED MATERIALS INTERFACES
(2023)
Article
Engineering, Manufacturing
Ton Bor, Marijn de Leede, Freek Deunk, Jesper Lind, Wout Lievestro, Henk-Jan Smit, Rob Aries, Vishal Dolas, Nick Helthuis, Martin Luckabauer, Remko Akkerman
Summary: The Friction Screw Extrusion Additive Manufacturing (FSEAM) process is a newly created process for additive manufacturing of low weight-high strength aluminum and magnesium alloys in the solid state. The study focused on the influence of the feed ratio on the quality, microstructure and mechanical properties of the fabricated builds. Solid builds free from defects were achieved at higher feed ratios, while lower feed ratios resulted in fabrication defects and reduced elongation values.
ADDITIVE MANUFACTURING
(2023)
Article
Engineering, Manufacturing
E. R. Pierik, W. J. B. Grouve, S. Wijskamp, R. Akkerman
Summary: A proper description of ply-ply friction is crucial for simulating thermoplastic composite forming processes. The rate-dependency of the peak and steady-state shear stress can be predicted by considering shear flow and wall slip effects. This study investigates the temperature and pressure dependency of friction and successfully models the effect of pressure on the onset of wall slip.
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
(2023)
Article
Engineering, Mechanical
T. H. Hoksbergen, R. Akkerman, I. Baran
Summary: This study presents a novel modeling method for predicting the impact fatigue lifetime of coating systems. The research finds that the droplet diameter and coating layer thickness play an important role in the system lifetime, and the overlap of stress histories results in differences between the lifetimes of single point and distributed impact locations.
TRIBOLOGY INTERNATIONAL
(2023)
Article
Materials Science, Characterization & Testing
Mariola Robakowska, Ian Gibson, Remko Akkerman, Frederik R. Wurm, Hubert Gojzewski
Summary: The presence of interfacial areas between consecutively joined layers leads to differences in the performance of 3D printed materials compared to fully cured polymer materials. This research demonstrates that incorporating nanosilica particles can strengthen the 3D printed layers of the polymer matrix and reduce microscopic inhomogeneity in the final printed materials.
Article
Green & Sustainable Science & Technology
T. H. Hoksbergen, R. Akkerman, I. Baran
Summary: This study discusses a numerical modeling framework for predicting the stress state in multilayered thermoplastic/thermoset coating systems and finds that the design of the coating system significantly influences the dynamic stress state and the performance as a protection layer for wind turbine blades.
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)
