Article
Materials Science, Multidisciplinary
Yong Wei, Xian-Ke Lu, Gang Wang, Yu Zhao, Jian-Sheng Li, Xiao-Yun Sun, Lai-Ma Luo, Yu-Cheng Wu
Summary: In this study, molybdenum-hafnium-carbon nanotube (Mo-Hf-CNT, MHC) composites with submicrometric grains and nanoparticles uniformly dispersed were fabricated using an efficient powder metallurgy method. The composites exhibited excellent mechanical properties at high temperature, with simultaneous increase in strength and ductility attributed to nanoparticles and planar slip. The formation mechanism of the nanoparticles was discussed in detail, providing a feasible way to fabricate high-performance Mo-based composites.
Article
Materials Science, Multidisciplinary
Xiaowen Fu, Zhanqiu Tan, Xinrui Min, Zan Li, Zhenming Yue, Genlian Fan, Ding-Bang Xiong, Zhiqiang Li
Summary: A novel trimodal grain structure was designed to achieve an excellent strength-ductility combination in CNT/Al-Cu-Mg composites. Tensile tests, in-situ tracking of strain distributions, and computational simulations were used to provide insights into the underlying mechanisms of how the trimodal grain structure enhances the mechanical properties of the composites. The results show that the trimodal grain structure facilitates strain hardening and alleviates strain/stress concentrations, leading to high yield strength and large tensile ductility in the composites.
MATERIALS RESEARCH LETTERS
(2021)
Article
Chemistry, Physical
M. Adil Mehmood, Mohammad Mujahid, Andy Godfrey, Muhammad Farooq Zafar, Khurram Yaqoob
Summary: This study aims to develop materials with better combinations of strength and ductility by adding TiB2 to the CoCrFeNi high entropy alloy (HEA). The interaction between titanium diboride (TiB2) and chromium in the HEA matrix during melting resulted in the in-situ formation of chromium borides with plate morphology. The mechanical characterization of the developed composites showed a wide range of mechanical properties, with excellent combinations of strength and ductility achieved by adding 6 wt% TiB2.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Materials Science, Multidisciplinary
Lan Shi, Mabao Liu, Wei Zhang, Weijia Ren, Shiqi Zhou, Qihang Zhou, Yanjie Yang, Zijun Ren
Summary: In this study, a titanium-rich transition layer was constructed to achieve improved interface between graphene nanoplates (GNPs) and copper (Cu) matrix. The obtained GNP-Ti/Cu composites showed higher strength and ductility compared to pure Cu, and exhibited further improvement compared to GNP/Cu composites. This work provides a feasible method for manufacturing nanocarbon reinforced Cu matrix composites with high mechanical performance through interfacial design.
Article
Materials Science, Multidisciplinary
X. N. Li, P. Y. Li, Z. Q. Liu, K. Ma, Z. Y. Liu, B. L. Xiao, Z. Y. Ma
Summary: Ti3AlC2 reinforced 2009Al (Ti3AlC2/2009Al) composites were fabricated by high energy ball milling combined with powder metallurgy. The microstructure, phases, and mechanical properties of Ti3AlC2/2009Al composites were investigated. The results showed that the interface reaction was effectively controlled, resulting in the much higher strength (688 MPa) and elongation (8.6%) of the Ti3AlC2/2009Al composite compared to most nanoreinforced aluminum matrix composites.
JOURNAL OF MATERIALS SCIENCE
(2023)
Article
Engineering, Multidisciplinary
Huaduo Wu, Yuanfei Han, Guangfa Huang, Nan Zong, Jianwei Mao, Huigang Shi, Weijie Lu
Summary: A novel fiber-like structural TiB reinforced titanium matrix composite was designed to achieve a combination of high strength and ductility. Through the improvement of structure and microstructure, the material showed enhanced tensile strength, comparable ductility, higher deformation ability, back stress during loading, and increased strain hardening rate. The higher mechanical response of the TiB/Ti composites is attributed to the introduction of TiB reinforcements with the new fiber-like structure, and the coupling effect of consequent grain refinement, load transferring effect, dislocation pinning effect of the fine TiB particles, back stress strengthening and the higher Schmid factors of prismatic slips.
COMPOSITES PART B-ENGINEERING
(2022)
Article
Multidisciplinary Sciences
M. Adil Mehmood, Khurram Shehzad, M. Mujahid, Talha Bin Yaqub, Andy Godfrey, Filipe Fernandes, F. Z. Muhammad, Khurram Yaqoob
Summary: This study focuses on improving the strength-ductility balance of the well-studied CoCrFeNi high entropy alloy (HEA) by adding varying amounts of SiC. The microstructural changes and mechanical properties of the resulting composites are investigated.
SCIENTIFIC REPORTS
(2022)
Article
Nanoscience & Nanotechnology
Jun Li, Fucheng Wang, Chunsheng Shi, Enzuo Liu, Chunnian He, Naiqin Zhao
Summary: By effectively combining vacuum pressureless sintering and hot-extrusion processes, MgAlB4 whisker reinforced Al composites with rational reinforcement distribution were successfully prepared. The composite exhibited excellent comprehensive properties with high ultimate tensile strength and fracture elongation, with the alignment distribution of MgAlB4 whiskers along the extrusion direction being the main reason for the improved ductility.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2021)
Article
Nanoscience & Nanotechnology
X. Luo, L. Yang, A. W. Zhao, W. J. Lu, B. Gan, Y. Q. Yang
Summary: Novel Al2O3 nanoparticle-reinforced heterogeneous CrCoNi-matrix composites were prepared, and the relationships between microstructure and mechanical properties were studied. The results showed that a heterogeneous composite with 20% CG matrix exhibited excellent strength-ductility synergy, and the increase in hardness may be due to the formation of carbides.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2022)
Article
Construction & Building Technology
Huy Hoang Nguyen, Phuog Hoang Nguyen, Quang-Hieu Luong, Weina Meng, Bang Yeon Lee
Summary: This study presents the development of high-strength and ultra-ductility engineered geopolymer composites (HSUD-EGCs). By using blended fly ash binders and hybridized fibers composed of polyethylene (PE) and polyvinyl alcohol (PVA), four HSUD-EGC mixtures were prepared. The mixture with a slag-to-fly ash weight ratio of 5.5:4 and 1.5% PE-PVA fiber volume fraction exhibited compressive strength of up to 87 MPa and tensile strain capacity of up to 10.5%. Furthermore, HSUD-EGCs demonstrated higher cost effectiveness compared to previous high-performance ECCs and EGCs. Chemical analysis revealed that the major healing material in HSUD-EGCs is C-(N)-A-S-H gel.
CEMENT & CONCRETE COMPOSITES
(2023)
Article
Engineering, Chemical
Xingguo Zhang, Xiayu Zhang, Yonggang Li, Kaili Hu, Desen Mao, Liang Luo, Tong Du, Hong Zhang, Kaiqiang Liu
Summary: This study investigated the effects of metakaolin and graphite on the properties of cement paste at high temperatures. The results showed that high temperatures changed the structure of C-S-H in the cement paste, causing damage to the microstructure and reduced mechanical properties. Metakaolin and graphite improved the mechanical properties by filling effect and accommodating uneven variation of hydration products, respectively.
Article
Mechanics
Jeong-Il Choi, Se-Eon Park, Huy Hoang Nguyen, Yun Lee, Bang Yeon Lee
Summary: The experimental investigation showed that hybrid layered panels with high-strength and high-ductility fiber-reinforced composites had higher impact resistance compared to panels made of single material. The combination of high-strength composite at the front side and high-ductility composite at the rear side resulted in improved performance and different damage patterns.
COMPOSITE STRUCTURES
(2022)
Article
Chemistry, Physical
Gabriela Fojt-Dymara, Marek Opiela, Wojciech Borek
Summary: Tests were conducted on two high-Mn steels with microadditions of Nb and Ti. The study found that the width of the high-temperature brittleness range (HTBR) depends on mechanical properties and microstructural factors. A hot tensile test was performed to determine the temperature of the beginning of hot working, and fractographic research revealed the mechanisms of hot cracking.
Article
Multidisciplinary Sciences
Kimiyoshi Naito
Summary: The static and fatigue tensile properties of high-strength PAN-based carbon and E-glass hybrid fiber-reinforced epoxy matrix composites were investigated. Different stress-strain curves were observed under different fiber orientations, and the Weibull moduli of the tensile strength values varied.
SCIENTIFIC REPORTS
(2022)
Article
Nanoscience & Nanotechnology
Ronghua Chen, Bochuan Li, Yizhuang Li, Xiaogang Wang, Chao Jiang, Mingxin Huang
Summary: Increasing the volume fraction of TiB2 in steel matrix composites led to larger TiB2 particles and more interfacial voids, resulting in a decrease in tensile strength. However, the TiB2-13 vol% SMC outperformed the TiB2-9 vol% SMC in ductility due to cleaner ferrite surrounding the primary TiB2 particles.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2021)
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)