Article
Materials Science, Multidisciplinary
Shaodi Wang, Shufeng Li, Lei Liu, Shaolong Li, Lina Gao, Huiying Liu, Xin Zhang, Bo Li, Biao Chen, Junko Umeda, Katsuyoshi Kondoh, Shengyin Zhou
Summary: The addition of iron element can significantly refine the grain size of the α-Ti matrix and improve the mechanical properties of titanium-based composites, especially the tensile strength and elongation. The improvement in mechanical properties is mainly attributed to solution strengthening, fine grain strengthening, and load-bearing strengthening.
JOURNAL OF MATERIALS SCIENCE
(2023)
Article
Engineering, Manufacturing
Deng Pan, Shufeng Li, Lei Liu, Xin Zhang, Bo Li, Biao Chen, Mingqiang Chu, Xiaodong Hou, Zhonggang Sun, Junko Umeda, Katsuyoshi Kondoh
Summary: TiB whisker-reinforced Ti6Al4V based composite powder was produced using electrode induction melting gas atomization for electron beam powder bed fusion. The microstructure of the composite consisted of a quasi-continuous network with nanosized TiB whiskers distributed along the grain boundary. The EB-PBF-fabricated Ti64-TiBw composites exhibited superior tensile properties, with 27% higher ultimate tensile strength and 82% higher elongation after fracture compared to forged composites with the same TiBw content.
ADDITIVE MANUFACTURING
(2022)
Article
Nanoscience & Nanotechnology
Shenghang Xu, Jingwen Qiu, Huibin Zhang, Yong Liu
Summary: The introduction of nanoscale metallic lamellae into Ti-Ta based composites via spark plasma sintering and subsequent hot rolling is shown to significantly improve the strength of the composite material. The nanoscale lamellae were found to effectively impede the motion of dislocations, leading to enhanced strength of the Ti-Ta composite. This versatile manufacturing route can produce high performance composites with nanoscale lamellae.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2021)
Article
Materials Science, Multidisciplinary
Zeqi Ren, Wenqi Liu, Qi An, Xiaodong Chen, Guoliang Wei, Run Chen, Rui Zhang, Lujun Huang, Lin Geng
Summary: In this study, TiBw/Ti-6Al-4V composites were designed and fabricated using coarse Ti-6Al-4V powder. The microstructures and tensile properties were investigated, and the strengthening mechanisms were analyzed. The results showed that the composites exhibited high strength and ductility, with a tensile strength of 952 MPa and an elongation of 18.4% at room temperature. Additionally, the composites also showed excellent mechanical properties at high temperatures. This work demonstrates the feasibility of designing low-cost titanium matrix composites using coarse spherical powder and network microstructures.
Article
Materials Science, Multidisciplinary
Jinglin Lu, Xin Lin, Nan Kang, Weidong Huang
Summary: In this study, bulk deposits of a Sc modified Al-Mn-Fe-Si alloy were prepared by selective laser melting (SLM) and analyzed for microstructural characteristics and tensile properties. After aging treatment, the ultimate tensile strength increased, but decreased as the aging temperature increased. The deposits exhibited a multiscale microstructure consisting of alpha-Al dendrite arrays and non-dendritic eutectic structures.
MATERIALS CHARACTERIZATION
(2021)
Article
Nanoscience & Nanotechnology
Y. W. Guo, W. Wei, W. Shi, D. Xue, X. R. Zhou, S. P. Wen, X. L. Wu, K. Y. Gao, H. Huang, Z. R. Nie
Summary: In this study, Selective Laser Melting (SLM) was used to fabricate Erbium-modified AlSi7Mg alloy. The effects of laser volumetric energy density and focus shift on surface quality, internal defects, and microstructure were investigated. It was found that a higher volumetric energy density resulted in larger aluminum sub-cells and promoted the precipitation of supersaturated silicon elements. Laser focus shift changed the energy density and molten pool size, thereby affecting internal defects, sub-cell size, and eutectic silicon particle size. By using optimized processing parameters, a small amount of equiaxed grains formed at the boundary of the molten pool, which improved the refinement of columnar grains and enhanced mechanical properties. The alloy produced with SLM had a yield strength of 297 MPa, a tensile strength of 441 MPa, and an elongation of 8%.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2022)
Article
Materials Science, Multidisciplinary
Snehashis Pal, Matjaz Finsgar, Tonica Boncina, Gorazd Lojen, Tomaz Brajlih, Igor Drstvensek
Summary: Different energy densities in Selective Laser Melting result in varied metallurgical properties of the product surface, affecting corrosion behavior. The size and arrays of alpha'-martensitic change significantly due to different cooling rates and scanning speeds. Thermal effects on surface particles significantly alter their microstructure, impacting corrosion properties.
MATERIALS & DESIGN
(2021)
Article
Materials Science, Multidisciplinary
Huiying Liu, Shufeng Li, Lei Liu, Shaolong Li, Lina Gao, Nannan Wei, Shaodi Wang, Xiaodong Hou, Shuyan Zhang, Xin Zhang, Bo Li
Summary: This study developed a novel method to control the size of titanium boride whiskers through the use of Ti-TiBw composite powder produced by the plasma rotating electrode atomization method. The addition of copper as an alloying element in the Ti-TiBw composite system through powder metallurgy was investigated to determine its effect on the size parameters, microstructure, and mechanical properties of the composites. The results showed that the hardness of the specimens increased by 61.9%, while their tensile strength and yield strength also increased significantly, with no significant change in elongation.
Article
Materials Science, Ceramics
Xin Zhao, Xin Lu, Hanning Zuo, Shuochen Ma, Chang Wang, Mengnie Victor Li
Summary: Reinforced by TiBw, titanium matrix composites were fabricated using selective laser melting technology for the application in high-performance titanium alloy parts in aerospace, automotive, and other fields. The microstructure, microhardness, and tribological performance of the TiBw/Ti6Al4V composite under different energy densities were studied, and the formation and evolution mechanism of the unique microstructure were analyzed. It was found that the composite is mainly composed of a fine α-Ti matrix, nano-scale TiBw produced by in-situ reaction, and residual TiB2 particles. The size, morphology, and distribution of TiBw and its network structure are affected by laser energy density. The improved microhardness and wear resistance of the composites are attributed to the fine-grain strengthening of the Ti matrix and the second-phase strengthening effect caused by the TiBw network structure.
CERAMICS INTERNATIONAL
(2023)
Article
Engineering, Chemical
C. Yang, J. C. Wang, L. M. Kang, T. Chen, W. W. Zhang, L. H. Liu, Y. Y. Li
Summary: A novel powder metallurgy strategy has been developed to overcome the room-temperature brittleness of pressureless sintered titanium matrix composites by evading Kirkendall's pores. By coating nanosized TiB2 powder with stearic acid and reactive sintering with micron-sized TiH2 powder, TiBw/Ti composites with nearly full density and low porosity have been prepared, exhibiting large tensile plasticity and high strength comparable to or even superior to some ceramic phase-reinforced pure Ti matrix composites.
Article
Chemistry, Physical
Jiming Lv, Kaiyu Luo, Haifei Lu, Zhao Wang, Jiajun Liu, Jinzhong Lu
Summary: This research investigated the influences of laser shock peening (LSP) on the residual stress state, microstructures, and mechanical properties of Ti-6Al-4V alloy fabricated by selective laser melting (SLM). The results showed that LSP treatment adjusted the residual stress from tensile to compressive state and promoted the formation of high-density dislocations and parallel nano mechanical twins (nano-MTs) in the coarse lamellar alpha' structures, resulting in grain refinement. The ultimate tensile strength and elongation of the SLMed Ti-6Al-4V alloy increased by approximately 14.3% and 18.3% after LSP treatment, respectively. The study revealed that the combination of high levels of compressive residual stress and grain refinement achieved by LSP contributed to the enhancement of both strength and ductility in the alloy.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Metallurgy & Metallurgical Engineering
Yang Xin, Zhang Zhao-yang, Wang Ben, Ma Wen-jun, Wang Wan-lin, Chen Wen, Kang Ning-ning, Liu Shi-feng
Summary: The incorporation of nano-graphene in titanium matrix composites fabricated by SLM resulted in improved density, hardness, and compressive strength, attributed to the uniformly distributed TiC particles and fine graphene. Additionally, the corrosion resistance of the composite was enhanced compared to pure titanium.
JOURNAL OF CENTRAL SOUTH UNIVERSITY
(2021)
Article
Materials Science, Multidisciplinary
Yiwei Sun, Jie Liu, Jialong Wang, Kai Zhang, Li Chen, Menglong Hao
Summary: In this study, a Nb521 alloy with a relative density of 99.0% was successfully processed by SLM. The microstructure of the SLM processed Nb521 showed high dislocation density, dislocation cell structure, and a large population of low-angle grain boundaries. ZrO2 nano-dispersoids were found in the microstructure, while carbides were absent. Tensile testing revealed that the strengths of the SLM processed Nb521 were comparable or higher than those of conventionally processed counterparts, but the ductility was significantly lower due to high dislocation density, porosity, and oxide dispersoids.
Article
Nanoscience & Nanotechnology
Hailiang Li, Dechang Jia, Zhihua Yang, Xingqi Liao, Haize Jin, Delong Cai, Yu Zhou
Summary: Post heat treatment significantly influences the microstructure evolution and mechanical properties of SLM-fabricated Ti-6Al-4V alloy and titanium matrix composite. The TiB precipitates in the TMC samples grew into larger whiskers with improved mechanical performance after heat treatment. A finer dual-phase matrix microstructure was achieved for TMC samples with higher yield strength after heat treatment.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2021)
Article
Nanoscience & Nanotechnology
Hyungsoo Lee, Joong Eun Jung, Dong-Soo Kang, Hi Won Jeong, Dae Won Yun, Jungho Choe, Young Soo Yoo, Seong-Moon Seo
Summary: This study investigated the effects of powder reuse on the microstructures and mechanical properties of selective laser melted (SLM) parts. It was found that increased powder reuse led to an increase in average particle size and oxidation of the powder, which in turn affected the recrystallization of the SLMed parts. However, in the case of multiple powder reuses, the increased oxidation contributed to improved mechanical properties of the parts.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2022)
Article
Engineering, Chemical
Jianjun He, Jiawei Wang, Ruifeng Wang, Jun Jie, Biao Chen, Guangwu Luo, Jiangyong Bao, Kaijun Yang
Summary: In this study, a new type of self-supplemented lubricating micro-nano composite coating was developed to solve the icing problem on wind turbine blades. The experimental results demonstrate that the coating exhibits good anti-icing performance and wear resistance, effectively reducing the adhesion between ice and the coating surface, and extending the freezing time of water droplets.
JOURNAL OF ADHESION SCIENCE AND TECHNOLOGY
(2023)
Article
Materials Science, Multidisciplinary
Lei Jia, Minghao Hou, Chen Zhang, Jin Xu, Shufeng Li, Zhenlin Lu, Katsuyoshi Kondoh
Summary: Ti(O)-B4C diffusion couples and (TiC + TiB)/Ti(O) composites were prepared to study the accelerated diffusion phenomenon and its influence at beta transition temperatures (beta(t)) of Ti matrix. Results showed that the thickness of reaction products in Ti(O)-B4C reached the maximum when sintered at beta(t), indicating that the alpha/beta transition of Ti matrix accelerated the diffusion of atoms. Additionally, (TiC + TiB)/Ti(O) composites had the highest size and number of reinforcements when sintered at beta(t), but had the lowest flexural strength and plasticity due to interface stripping.
JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE
(2023)
Article
Medical Laboratory Technology
Jing Tian, Biao Chen, Bin Zhang, Tantan Li, Zhiqiang Liang, Yujin Guo, Huping Jiao, Fenghong Liang, Longquan Xiang, Fanzhong Lin, Ruiwen Ren, Qingbin Liu
Summary: The researchers developed a new auto-recombinase polymerase amplification (RPA)-fluorescence platform for the diagnosis of SARS-CoV-2. By optimizing primers and probes, the platform could detect SARS-CoV-2 nucleotides within 15 minutes, with high specificity and accuracy.
LABORATORY MEDICINE
(2023)
Article
Materials Science, Multidisciplinary
Xin Zhang, Xin Li, Lei Liu, Bo Li, Xiaodong Hou, Deng Pan, Lina Gao, Shufeng Li
Summary: A new alloying strategy is proposed in this study to regulate the weak intrinsic interface and uncontrollable interfacial reaction in carbon nanotubes (CNTs) reinforced aluminum matrix composites (AMCs). The addition of Si element inhibits the interface reaction between Al and CNTs by hindering the dissolution and diffusion of carbon atoms in the Al matrix. The strength of the AMCs is enhanced through grain refinement, dislocation increment, improved wettability and interface bonding, as well as load transfer to CNTs.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2023)
Article
Chemistry, Physical
Hong Li, Biao Chen, Runhua Gao, Fugui Xu, Xinzhu Wen, Xiongwei Zhong, Chuang Li, Zhihong Piao, Nantao Hu, Xiao Xiao, Feng Shao, Guangmin Zhou, Jinlong Yang
Summary: This study demonstrates a new strategy to enhance the electrochemical activity of transition metal dichalcogenides (TMDs) through interface design and atomic engineering. The use of MoSSe nanosheets vertically anchored on graphene as cathode for aqueous zinc-ion batteries (AZIBs) improves the conductivity and intercalation/deintercalation process, resulting in high-rate capability and long cycling life. The research also shows the potential application of this strategy in other TMDs for multivalent batteries.
Article
Metallurgy & Metallurgical Engineering
Minjie Wang, Jianghua Shen, Biao Chen, Umeda Junko, Katsuyoshi Kondoh, Yulong Li
Summary: This study investigated the strain rate sensitivity, activation volume, and mobile dislocations in carbon nanotubes/aluminum composites through stress relaxation compression tests. The results showed that the addition of carbon nanotubes increased the strain rate sensitivity and improved the dislocation storage capability.
ACTA METALLURGICA SINICA-ENGLISH LETTERS
(2023)
Article
Nanoscience & Nanotechnology
Shaolong Li, Shufeng Li, Lei Liu, Lina Gao, Yabo Fu, Xin Zhang, Bo Li
Summary: Understanding the softening mechanisms of high-temperature titanium alloys is crucial for ensuring their stability and safety at service temperatures. This study investigated the softening behavior and failure mode of high-temperature titanium alloy TA15 at service temperatures. It was found that the size of the coarse prior β grains in TA15 affects its tensile strength, with larger grain sizes leading to lower strength and the occurrence of grain boundary softening and fracture at high temperatures. Increasing the equi-cohesive temperature of the alloy shows promise for improving its service temperature.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2023)
Article
Materials Science, Multidisciplinary
Xinghua Ji, Shufeng Li, Xin Zhang, Lei Liu, Shaolong Li, Lina Gao, Xin Li, Shaodi Wang
Summary: The problems of SiC particles reinforced AlSi10Mg composites prepared by traditional casting method can be improved by powder metallurgy. This study analyzed the influence of SiC particle size and content on the properties of SiC/AlSi10Mg composites. The obtained composites showed a dense microstructure without interfacial reaction phase. The strength of SiC/AlSi10Mg increased with the increase of nm-SiC content, while the strength hardly changed with the increase of μm-SiC content. The deformation between μm-SiC and AlSi10Mg matrix was not coordinated, leading to interface cracking or μm-SiC fracture.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Chemistry, Multidisciplinary
Ming Liang, Hanwen Zhang, Biao Chen, Xiao Meng, Jingwen Zhou, Liying Ma, Fang He, Wenbin Hu, Chunnian He, Naiqin Zhao
Summary: A universal strategy is reported to synthesize sub-10 nm metal-based nanomaterials (SMNs) embedded in free-standing carbon foam (SMN/FC-F) composite electrodes using salt template and powder metallurgy technology. The unique structure of the composite electrodes enables excellent reversible ion storage kinetics and long-term cycling performance.
ADVANCED MATERIALS
(2023)
Article
Engineering, Environmental
Chang Liu, Shan Zhu, Fengxiang Sun, Biao Chen, Liying Ma, Chunsheng Shi, Naiqin Zhao
Summary: This study explores the influence of particle size on the catalytic activity of metal-based catalysts using interpretable algorithms and experimental validation. The results show a bowl-shaped correlation between particle size and overpotential, with an optimal size range of 1.5 to 3.0 nm. The study further highlights the importance of the balance between metal support interaction and active site exposure ratio in determining the catalytic activity.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Materials Science, Multidisciplinary
Shaodi Wang, Shufeng Li, Lei Liu, Shaolong Li, Lina Gao, Huiying Liu, Xin Zhang, Bo Li, Biao Chen, Junko Umeda, Katsuyoshi Kondoh, Shengyin Zhou
Summary: The addition of iron element can significantly refine the grain size of the α-Ti matrix and improve the mechanical properties of titanium-based composites, especially the tensile strength and elongation. The improvement in mechanical properties is mainly attributed to solution strengthening, fine grain strengthening, and load-bearing strengthening.
JOURNAL OF MATERIALS SCIENCE
(2023)
Article
Multidisciplinary Sciences
Lei Liu, Shufeng Li, Deng Pan, Dongxu Hui, Xin Zhang, Bo Li, Tianshou Liang, Pengpeng Shi, Abdollah Bahador, Junko Umeda, Katsuyoshi Kondoh, Shaolong Li, Lina Gao, Zhimao Wang, Gang Li, Shuyan Zhang, Ruihong Wang, Wenge Chen
Summary: In this study, a new strategy for developing titanium matrix composites (TMCs) with a dual-structure is proposed. The TMCs achieve enhanced strength compared to homostructure composites, while maintaining 12.0% elongation comparable to the matrix Ti6Al4V alloys. This is achieved by using a TiB whisker rich region engendered fine grain Ti6Al4V matrix with a three-dimensional micropellet architecture (3D-MPA) as the primary structure and evenly distributed 3D-MPA reinforcements and a TiBw-lean titanium matrix as the overall structure.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2023)
Article
Materials Science, Multidisciplinary
Jiajing Chen, Shaopeng Li, Shengtai Xu, Zichao Wei, Guangfa Huang, Weijie Lu, Yuanfei Han
Summary: In this study, an impact resistant TiB/Ti6Al4V titanium matrix composite (TMC) with a tailored gradient-layered network structure was designed and fabricated to meet the increasing demand for high impact resistance of light metals under extreme conditions in aerospace. Pendulum impact tests showed that the energy absorption of gradient-layered TMCs with network structure was four times higher than that of homogeneous TMCs and much higher than that of traditional layered TMCs. Microscopic characterization revealed several anti-impact mechanisms contributing to the excellent dynamic fracture resistance of gradient-layered TMCs, such as crack blunting, interfacial crack deflection, secondary cracks, and plastic deformation. This work proposes an efficient structure-design strategy for developing high impact resistant TMCs, which can be useful in expanding the development of other metal matrix composites with high strength and impact resistance in the aerospace field.
Article
Materials Science, Multidisciplinary
Yiming Zhang, Shufeng Li, Shaodi Wang, Deng Pan, Lei Liu, Shaolong Li, Lina Gao, Huiying Liu, Xin Zhang, Bo Li, Shengyin Zhou
Summary: This study developed a self-designed spherical Ti64 powder containing nanosized TiB whisker (TiBw) and used it as feedstock to prepare Ti64-TiBw composites by electron beam melting (EBM). The size characteristics and heat treatment temperature have significant effects on the interface structure and microstructure evolution of the composites.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Review
Chemistry, Multidisciplinary
Biao Chen, Simi Sui, Fang He, Chunnian He, Hui-Ming Cheng, Shi-Zhang Qiao, Wenbin Hu, Naiqin Zhao
Summary: This review focuses on the interfacial engineering of transition metal dichalcogenide/carbon (TMDC/C) heterostructures for their potential applications in electrochemical energy conversion and storage devices. The review analyzes and summarizes the fundamental electrochemical properties and preparation strategies of TMDC/C heterostructures using a combination of experimental and theoretical approaches. It also highlights the design and utilization of interfacial engineering for specific electrochemical energy devices.
CHEMICAL SOCIETY REVIEWS
(2023)
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)
