Article
Chemistry, Physical
Masoud Moshtaghi, Mahdieh Safyari, Shigeru Kuramoto, Tomohiko Hojo
Summary: The study found that high-angle boundaries (HABs) play an important role in hydrogen embrittlement behavior, with HABs with high desorption energy absorbing a significant amount of hydrogen, reducing the likelihood of reaching the critical hydrogen concentration required for crack initiation, thereby improving the alloy's resistance to hydrogen embrittlement.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Materials Science, Multidisciplinary
Hai-Lin Yang, Meng-Zhen Zhu, Jian-Ying Wang, Chen-Xu Ma, Xiong-Wen Zhou, Hai-Xia Xing, Er-Lin Zhang, Shou-Xun Ji
Summary: The study showed that the mechanical and antibacterial properties of Ti-3wt%Cu alloy could be significantly improved by cold rolling and different annealing temperatures. Through adjusting the size and distribution of Ti2Cu phase, a balance between strength and ductility could be achieved, increasing the applicability of the alloy in clinical practice. The combination of excellent mechanical properties and antibacterial properties makes the Ti-3wt%Cu alloy a promising candidate for long-term orthopaedic implant applications.
Article
Materials Science, Multidisciplinary
RuZhao Chen, Bin Fu, Jie Han, Jie Hu
Summary: In order to optimize the formation of the magnetocaloric 1:13 phase in La(Fe,Si)(13)-based compounds, a method to improve the preparation process and promote the practical application of magnetic refrigeration is proposed. Plastic deformation of LaFe10.9Co0.7Si1.4 and LaFe13.1Co0.7Si1.4 samples through cold compression at room temperature resulted in increasing the number of grains per unit volume and homogenizing the grain size. The pre-compressed samples showed a much higher 1:13 phase compared to the uncompressed samples without an uneven elemental distribution. The LaFe10.9Co0.7Si1.4 compound obtained through the same preparation process exhibited a higher magnetocaloric phase ratio compared to LaFe13.1Co0.7Si1.4.
JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE
(2023)
Article
Nanoscience & Nanotechnology
Yumi Choi, Jinjin Ha, Myoung-Gyu Lee, Yannis P. Korkolis
Summary: The study investigates the kinetics of PLC bands during the hole-expansion process on a solid-solution heat-treated AA7075 aluminum sheet. Each PLC band aligns radially, spans diverse stress states, and propagates circumferentially, with nucleation frequency influenced by plastic anisotropy and proportionally to thickness strain.
SCRIPTA MATERIALIA
(2021)
Article
Metallurgy & Metallurgical Engineering
R. Bakhshi, M. H. Farshidi, S. A. Sajjadi
Summary: The study shows that a superior strengthening effect is achieved through the imposition of severe plastic deformation supplemented by post-deformation natural ageing. The yield strength of the alloy increases to over 400 MPa, which is about one-third higher than the value obtained after the usual T6 treatment. This superior strength is mainly attributed to grain refinement, increased dislocation density, and an increased volume fraction of precipitates during natural ageing.
TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA
(2021)
Article
Materials Science, Coatings & Films
Fu Jun Wei, Bang Yen chou, Kuan Zhong Fung, Shu Yi Tsai
Summary: This study investigates the plastic strain distribution of cold spray Cu powders and coatings using electron backscatter diffraction (EBSD) analysis. It is found that more dynamic recrystallization and plastic strain release occur in the as-sprayed EP and GA coatings compared to the WA coating. The influence of recrystallization of twin grains in the GA coating on the ductility of the coating is discussed. The static recrystallization in the postannealing treatment is more prominent in the EP and GA coatings, supporting differences in dynamic recrystallization among the cold-sprayed coatings determined through EBSD analysis. The thermal conductivity of cold-sprayed Cu coatings is affected by recrystallization and strain release.
SURFACE & COATINGS TECHNOLOGY
(2022)
Article
Materials Science, Multidisciplinary
Sohail Shah, Akash Gopal, Elisabeth Thronsen, Constantinos Hatzoglou, Bjorn Holmedal
Summary: Comparison between natural and artificial ageing treatments with cyclic deformation ageing at room temperature revealed different fracture behaviors and mechanical responses for Al-Zn-Mg alloys. Cyclic ageing resulted in early slant shear fracture, while natural ageing improved mechanical properties.
MATERIALS & DESIGN
(2022)
Article
Nanoscience & Nanotechnology
H. Roghani, E. Borhani, S. A. A. Shams, C. S. Lee, H. R. Jafarian
Summary: The study focused on creating Al-0.5 vol% CuO composites using the ARB process. Different methods of ARB resulted in composite grains with average sizes of 219.19 nm, 306.54 nm, and 355.65 nm. The ARB process significantly increased the tensile strength of the composites.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2021)
Article
Chemistry, Multidisciplinary
Martin Stueckler, Stefan Wurster, Markus Alfreider, Michael Zawodzki, Heinz Krenn, Andrea Bachmaier
Summary: This study investigates the structural evolution and magnetic properties of Co-Zr composite through high-pressure torsion processing and subsequent thermal treatment. The results demonstrate that severe plastic deformation can result in an amorphous microstructure with low coercivity and different annealed states can further modify the magnetic properties.
Article
Chemistry, Physical
Zhibo Liu, Yaojun Lin, Zhigang Yan, Manping Liu, Xiaochun Liu, Jiani Sun, Hans J. Roven
Summary: In this study, a strategy of strengthening Al-10wt%Mg binary alloy via heavy cryogenic rolling at liquid nitrogen temperature was proposed. The combination of cryogenic plastic deformation and a high concentration of Mg solute effectively enhanced the strength and ductility of the alloy, providing a new avenue for non-age-hardened Al-Mg alloys to achieve ultrahigh strength and good ductility.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Physical
Jinming Li, Yuhua Huang, Yuqi Zhou, Fulong Zhu
Summary: Molecular dynamics simulations were used to investigate the repeated nanoindentation on aluminum substrate with varying thicknesses of boron nitride nanosheet coating. The study reveals that the hardness of the substrate increases with coating thickness. The pressure area of the aluminum substrate also increases with coating thickness. The coating force causes more atoms to move along the loading direction, leading to substrate slip and severe atomic strain. However, some aluminum atoms are able to elastically recover after unloading, despite being severely deformed. After multiple loadings, elastic deformations transition into plastic deformations, possibly accompanied by lattice structure destruction and the presence of amorphous atoms.
APPLIED SURFACE SCIENCE
(2023)
Article
Materials Science, Multidisciplinary
Omar Alejandro Velazquez-Carrillo, Francisco Alfredo Garcia-Pastor
Summary: Accumulative roll bonding (ARB) is an SPD technique widely used to enhance mechanical properties in metals, especially precipitation hardened alloys like aluminum 7075. Materials processed by ARB, such as Al-7075, show significant improvements in yield and ultimate strength, with thermal stability of the microstructure being a key consideration for high-strength applications.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2021)
Article
Chemistry, Physical
Yufang Zhao, Yaqiang Wang, Kai Wu, Jinyu Zhang, Gang Liu, Jun Sun
Summary: Introducing heterogeneous interfaces by constructing laminated structure is a promising approach to achieve controllable strengthening behavior of high entropy alloys. In this study, the microstructural evolution and mechanical properties of Ni/Fe50Mn30Co10Ni10 nanolaminates were systematically investigated. The nanoindentation hardness of the nanolaminates initially increased and then decreased with decreasing layer thickness, reaching a maximum value at around 25 nm. The transformation of constraining barrier for dislocation slipping from the heterogeneous interfaces to columnar grain boundaries was identified as the cause for this behavior. The interfacial structure transformed from incoherent to completely coherent below 25 nm, and both constituent layers contributed significantly to the plastic deformation. The h-dependent mechanical behavior can be explained by the co-deformation of constituent layers and the structural evolution of the interface.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Materials Science, Multidisciplinary
Anastasiia Dolzhenko, Marina Tikhonova, Rustam Kaibyshev, Andrey Belyakov
Summary: This article critically reviews the effect of large-strain cold-to-warm deformation on the microstructures and mechanical properties of various steels and alloys. The focus is mainly on the microstructure evolution, with cursory consideration of deformation textures. The study covers a wide strain range, from early straining to severe deformations, providing a clearer understanding of how deformation mechanisms affect the structural changes leading to the final microstructures evolved in large strains. General regularities of microstructure evolution are shown for different deformation methods, including conventional rolling/swaging and special techniques such as equal channel angular pressing or torsion under high pressure. The article also reveals and discusses important mutual relationships between microstructural parameters, such as grain size vs. dislocation density, and pays particular attention to the mechanisms responsible for grain refinement during microstructure evolution under large strain deformation. The development of an ultrafine-grained microstructure during large strain deformation is considered in terms of continuous dynamic recrystallization, and its regularities are compared with conventional (discontinuous) dynamic recrystallization and grain subdivision (fragmentation) phenomenon. The article quantitatively represents the structure-property relations for structural strengthening, taking into account various mechanisms of dislocation retardation.
Article
Nanoscience & Nanotechnology
Yu Gamin, Jairo Alberto Munoz Bolanos, A. S. Aleschenko, A. A. Komissarov, N. S. Bunits, D. A. Nikolaev, A. Fomin, V. V. Cheverikin
Summary: The semi-finished products from a Cu-Ni-Cr-Si alloy are produced for electrical purposes through radial-shear rolling (RSR) and heat treatment, resulting in improved mechanical properties and electrical conductivity. The alloy is thermally hardened after heat treatment due to the precipitation of fine inclusions uniformly distributed in the sample volume, leading to enhanced mechanical properties and electrical conductivity.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2021)
Article
Materials Science, Ceramics
Fei Lu, Mengjie Yang, Yunjia Shi, Changhui Wu, Xusheng Jia, Hao He, Jinrui Su, Mingju Chao, Bin Cai
Summary: The addition of negative thermal expansion oxide in the cathode of solid oxide fuel cells can significantly improve their electrochemical performance, leading to a substantial increase in peak power density and a decrease in relative increment between 500-750 degrees Celsius.
CERAMICS INTERNATIONAL
(2021)
Article
Nanoscience & Nanotechnology
Kun Xie, Guopeng Zhang, Hai Huang, Jianjian Zhang, Zhongxia Liu, Bin Cai
Summary: The study examined the effects of carbon nanotube aspect ratio on the mechanical properties of CNT/Al composites. It was found that adding 0.5 wt% of CNTs significantly increased strength without sacrificing plasticity. Additionally, within a content of 1.0 wt%, uniform distribution of CNTs in the Al matrix led to a significant increase in strength and hardness.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2021)
Article
Microscopy
Jianjian Zhang, Bo Ren, Ruifeng Zhao, Zhongxia Liu, Bin Cai, Guopeng Zhang
Summary: The microstructure, phase, alloying behavior, and oxidation behavior of CoxCrCuFeMnNi high entropy alloy powders with different Co content were studied. The results showed that the alloying began after 5 hours of ball milling and the oxidation resistance decreased with the increase of Co content.
Article
Chemistry, Physical
Hai Huang, Bin Cai, Huan Li, Xiaoting Yuan, Yanan Jin
Summary: This study investigates the displacement cascades near an Ni-graphene interface using atomistic simulations, revealing that increasing cascade energy promotes defect formation, while ambient temperature has little effect on defect number. Damaged graphene can self-heal through annealing, and the interface shows high sink efficiency for irradiation defects.
JOURNAL OF SUPERCRITICAL FLUIDS
(2021)
Article
Materials Science, Multidisciplinary
Fangle Peng, Jiefang Wang, Ruibin Yang, Yage Xia, Guopeng Zhang, Bin Cai
Summary: The study found that among Al-Cu-Mg-Ag alloys with different Cu content around its solid solubility limit in Al, the alloy with 6.00 wt % Cu exhibited the best creep resistance after aging, while the alloy with 5.65 wt % Cu showed the worst creep resistance. Additionally, increasing temperature led to a more significant increase in the steady creep rate of the alloys.
Article
Microscopy
Tianhai Yang, Bin Cai, Yunjia Shi, Mingxing Wang, Guopeng Zhang
Summary: The pre-alloyed CoCrFeMnNi high-entropy alloy demonstrated good uniformity and excellent mechanical properties after hot pressing sintering, maintaining high plasticity. The strengthening mechanism of the alloy is mainly attributed to the effects of grain refinement and the presence of nano-sized metastable structures.
Article
Microscopy
Junjie Huang, Yazhou Zhang, Defa Wang, Bo Ren, Panying Song, Guopeng Zhang, Bin Cai, Zhongxia Liu
Summary: The addition of 5 wt.% nanodiamond significantly increases the compressive yield strength and decreases the coefficient of thermal expansion of 2024Al. High energy ball milling further enhances these properties due to the strengthening effects on the alpha-Al matrix and nanodiamond dispersion. The optimal ball milling parameters are 250-300 rpm speed and 5-7 hours time.
Article
Microscopy
Defa Wang, Ruibin Yang, Junjie Huang, Zhongxia Liu, Guopeng Zhang, Bin Cai
Summary: Pre-straining Al-Cu-Li alloys increases dislocation density, promotes precipitation, and improves strength. Excessive pre-strains are not conducive to improving micro-yield strength, while a pre-strain of 2% shows potential for enhancing both micro-yield and macro-yield strength.
Article
Physics, Condensed Matter
Xusheng Jia, Fei Lu, Kang Liu, Mingkang Han, Jinrui Su, Hao He, Bin Cai
Summary: The introduction of negative thermal expansion (NTE) oxide into conventional cathode materials can enhance the performance of intermediate temperature solid oxide fuel cells (IT-SOFCs). By optimizing the thermal matching of cathode and electrolyte layers and the oxygen reduction reaction activity, a higher peak power density can be achieved.
JOURNAL OF PHYSICS-CONDENSED MATTER
(2022)
Article
Microscopy
Caihong Song, Guojun Li, Gen Li, Guopeng Zhang, Bin Cai
Summary: The study investigated the creep behavior of a potential novel superalloy, high entropy alloy CoCrFeMnNi. Different creep mechanisms, such as dynamic recovery and recrystallization, were observed at various temperatures and stresses, suggesting a complex relationship between microstructure evolution and creep properties.
Article
Materials Science, Ceramics
Bo Ren, Rui-feng Zhao, Guo-peng Zhang, Zhong-xia Liu, Bin Cai, Ai-yun Jiang
Summary: AlCrMoZrTi/(AlCrMoZrTi)N multilayer high-entropy nitride ceramic films fabricated by reactive RF magnetron sputtering exhibited preferentially oriented FCC crystal structures. The films with larger modulation period had higher nitrogen content and surface roughness, weaker template effect, and decreased interface structure. The film with a modulation period of 1500 nm had the highest hardness and modulus. The film with the smallest modulation period showed stable friction coefficient and small wear rate.
CERAMICS INTERNATIONAL
(2022)
Article
Materials Science, Ceramics
Yanan Jin, Hai Huang, Yinghui Zhong, Xiaoting Yuan, Huan Li, Ding Lou, Kun Xie, Zhongxia Liu, Bin Cai, Qing Peng
Summary: This study investigated the influence of Cu-diamond interfaces (CDIs) on energetic displacement cascades using atomistic simulations. The results showed that Cu interstitials exhibit the lowest concentration among all defects in most cases and Cu-diamond interfaces could act as effective sinks to facilitate the recombination and/or annihilation of irradiation-induced defects in all scenarios. The study provides important insights into the understanding of the microscopic evolution of irradiation defects for Cu-diamond composites.
CERAMICS INTERNATIONAL
(2022)
Article
Chemistry, Multidisciplinary
Mei Yang, Yongfa Cheng, Yang Yue, Yu Chen, Han Gao, Lei Li, Bin Cai, Weijie Liu, Ziyu Wang, Haizhong Guo, Nishuang Liu, Yihua Gao
Summary: A high-performance flexible pressure sensor based on MXene/polyurethane (PU)/interdigital electrodes was fabricated using a low-cost spray method. The sensor exhibited ultrahigh sensitivity, fast response speed, recovery speed, and good stability, and it also had self-healing capabilities and tactile feedback function.
Article
Materials Science, Multidisciplinary
Guojun Li, Fei Lu, Gen Li, Guopeng Zhang, Yunjia Shi, Hai Huang, Jiefang Wang, Bin Cai
Summary: This study investigated the effects of cold-rolling and annealing on lattice distortion, recovery, and grain growth in a single crystal FCC CoCrFeMnNi. The results showed that lattice distortion increases with thickness reduction but decreases after annealing. The recovery process is dominated by dislocation slide, while grain growth is mainly controlled by grain boundary migration.
Article
Chemistry, Physical
Kang Liu, Fei Lu, Xusheng Jia, Hao He, Jinrui Su, Bin Cai
Summary: The introduction of negative thermal expansion (NTE) materials into the cathodes of solid oxide fuel cells (SOFCs) can reduce thermal expansion mismatch and improve electrochemical performance. Adding SZM to the composite cathode showed the best overall electrochemical performance and thermal cycling stability.
JOURNAL OF MATERIALS CHEMISTRY A
(2022)
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)
