Article
Materials Science, Ceramics
Ricardo Mineiro, C. M. Fernandes, E. L. Silva, M. R. Soares, D. Figueiredo, B. Ferrari, A. J. Sanchez-Herencia, A. M. R. Senos
Summary: The Spark Plasma Sintering (SPS) technique was used to investigate the sintering process of cBN-TiCN based composites with and without the addition of Ni. The addition of Ni improved the densification of the material, but complete removal of open porosity and transformation of cBN phase to hBN phase only occurred at 1700°C. Other matrix phases, such as TiB2 and Ni3B, were also formed during the sintering process.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2023)
Article
Materials Science, Multidisciplinary
Xixi Hu, Shenglin Zhong, Jing Geng, Yang Liu, Ailing Sun, Jiuyang Li, Peixun Wang, Luyu Yang, Yi Wu
Summary: In this study, the Sialon phase was synthesized under the conditions of ultra-high pressure and high temperature, and used as the binder to in situ synthesize the PcBN composite. The effects of Sialon on the phase composition, microstructure and mechanical properties of PcBN composites were investigated. It was found that the formation of Sialon significantly improved the mechanics properties and machinery properties of the sintered body.
DIAMOND AND RELATED MATERIALS
(2022)
Article
Materials Science, Multidisciplinary
Kai Zhai, Shaohui Chen, Chengduo Wang, Qingkui Li, Benshuang Sun, Jilin He
Summary: A novel low-cost WC-CoCuFeNi cemented carbide has been produced using spark plasma sintering technology. The newly-developed cemented carbides exhibit a good combination of hardness and fracture toughness, making them a promising substitute for WC-Co.
INTERNATIONAL JOURNAL OF REFRACTORY METALS & HARD MATERIALS
(2022)
Article
Materials Science, Ceramics
Fuzhou Guo, Zengbin Yin, Xuelin Li, Juntang Yuan
Summary: In this study, high-performance alpha/beta-SiAlON ceramic end mill rods with large aspect ratios were successfully prepared via Spark plasma sintering (SPS). Two different types of sintering processes (vertical-round-rod and horizontal-square-rod) were developed and compared, and it was found that the horizontal-square-rod samples showed better mechanical properties and machining performance due to their uniform temperature distribution and preferred grain orientation.
JOURNAL OF ADVANCED CERAMICS
(2023)
Article
Chemistry, Physical
Tomila M. Vidyuk, Dina Dudina, Michail A. Korchagin, Alexander Gavrilov, Arina Ukhina, Uliana E. Bulanova, Mikhail A. Legan, Aleksey N. Novoselov, Maksim A. Esikov, Alexander G. Anisimov
Summary: This article presents the features of in-situ synthesis, microstructure evolution, and mechanical properties of TiC-Cu composites obtained by mechanical milling and spark plasma sintering (SPS). Different carbon sources were compared for their influence on the composite mixtures, with the conclusion that carbon black and nanodiamonds facilitate faster conversion of reactants compared to graphite. The TiC-Cu composite obtained showed a relative density of 95%, impressive strength and hardness properties, and an unconventional microstructure.
SURFACES AND INTERFACES
(2021)
Article
Materials Science, Ceramics
Kejuan Yu, Zengbin Yin, Fuzhou Guo, Juntang Yuan
Summary: In this study, α/β-SiAlON/SiC composite ceramic tool materials were prepared via spark plasma sintering, and the effects of SiC particle content, size, and sintering temperature on the properties of the materials were investigated. The results showed that SiC can inhibit the phase transformation of SiAlON and increase the hardness of the composite. The size of SiC particles affected the densification temperature and microstructure of the composite. The sample with 10 wt.% 100 nm SiC particles sintered at 1700 degrees C exhibited the best properties.
INTERNATIONAL JOURNAL OF APPLIED CERAMIC TECHNOLOGY
(2023)
Article
Materials Science, Ceramics
Xiao-Tong Jia, Zhao-Hui Zhang, Xian-Yu Li, Tian-Hao Xu, Luo-Jin Liu, Qiang Wang, Zhao-Hu Jia, Xing-Wang Cheng
Summary: In this study, AlON ceramics were prepared using spark plasma sintering (SPS) technique. The effects of SPS parameters on the microstructures and mechanical properties were systematically investigated. It was found that when sintered at 1580°C with a pressure of 50 MPa and a holding time of 5 minutes, the AlON ceramics exhibited excellent mechanical and optical performances.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2023)
Article
Chemistry, Multidisciplinary
Vadde Madhur, Muthe Srikanth, A. Raja Annamalai, A. Muthuchamy, Dinesh K. Agrawal, Chun-Ping Jen
Summary: In this study, W-Cu composites were fabricated by adding various amounts of nano-copper to tungsten, showing improvements in densification, strength, hardness, and electrical conductivity with increasing copper content. Fractography analysis of tensile tested samples revealed a mixed-mode of fracture, and an increase in nano-copper content resulted in higher electrical conductivity.
Article
Chemistry, Physical
Yuanmeng Wang, Ming Zhu, Longlong Dong, Guodong Sun, Wei Zhang, Hang Xue, Yongqing Fu, Ahmed Elmarakbi, Yusheng Zhang
Summary: Powder metallurgy methods are used to synthesize titanium matrix composites with exceptional mechanical properties. In this study, TiC/Ti-6Al-4V matrix composites were synthesized using a cost-effective and high-performance method and characterized. The addition of graphene nanoplates (GNPs) resulted in smaller grain size and improved mechanical properties of the composites. The strength of the composites was mainly attributed to grain refinement, precipitation of secondary phases, and dislocations strengthening. This work provides a new methodology for fabricating high-performance titanium matrix composites.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Materials Science, Ceramics
Jing Qiao, Quan Zhang, Yuchao Zhou, Xiaosa Gao, Gaohui Wu
Summary: In this paper, WB-reinforced Al (WB/Al) composites, a novel nuclear shielding material, were prepared by spark plasma sintering (SPS) process. The effects of WB content, heat treatment and matrix type on the properties of the composites were discussed. The results demonstrate that the WB/Al composites have good mechanical properties and well neutron and gamma-ray shielding performance, making them promising for nuclear radiation protection.
CERAMICS INTERNATIONAL
(2022)
Article
Materials Science, Ceramics
D. G. Krotkevich, E. B. Kashkarov, M. S. Syrtanov, T. L. Murashkina, A. M. Lider, S. Schmiedeke, N. Travitzky
Summary: The study investigated the microstructure and mechanical properties of preceramic paper-derived Ti3Al(Si)C2-based composites fabricated by spark plasma sintering at different temperatures and pressures. It was found that materials sintered at 1150°C exhibited high flexural strength and hardness due to fine microstructure and secondary phase content, while an increase in temperature led to changes in structure and properties of the composites.
CERAMICS INTERNATIONAL
(2021)
Article
Materials Science, Ceramics
Fuzhou Guo, Zengbin Yin, Weiyou Chen, Haitao Liu, Dongbo Hong, Juntang Yuan
Summary: The preparation and properties of multi-cation doped SiAlON ceramics were investigated. The addition of Sm2O3 improved the densification process and mechanical properties.
CERAMICS INTERNATIONAL
(2022)
Article
Materials Science, Ceramics
Junwei Huang, Xiaoan Lv, Xiaofeng Dong, M. Irfan Hussain, Changchun Ge
Summary: In this study, high hardness and toughness alpha/beta-Si3N4 composite ceramics were fabricated using novel ternary additives and spark plasma sintering. The composition, microstructure, grain distribution, crack propagation process, and mechanical properties of the ceramics were investigated. The results demonstrated the influence of different additives on the phase composition and mechanical properties of the ceramics. The addition of ZrN-AlN-Al2O3 resulted in the highest hardness, while the addition of ZrN-AlN-Y2O3 and TiC particles improved the bending strength and fracture toughness of the ceramics.
CERAMICS INTERNATIONAL
(2022)
Article
Materials Science, Ceramics
Mohammad Sadegh Abdi Maghsoudlou, Touradj Ebadzadeh, Alireza Aghaei
Summary: Based on technological capabilities, beta-SiAlON ceramics are synthesized using an affordable approach in this study. The results showed that the aluminosilicate precursor prepared by mechanochemical processing can be converted into high-quality SiAlON powders with excellent mechanical properties.
CERAMICS INTERNATIONAL
(2022)
Article
Chemistry, Physical
Anna Wasik, Beata Leszczynska-Madej, Marcin Madej, Rafal Rubach, Dariusz Garbiec
Summary: This study investigated the effect of holding time on microstructure evolution and properties of spark plasma sintered AA7075-based composites reinforced with 3, 5, and 10 wt% sub-micro B4C powder. The holding time did not significantly influence the microstructures, hardness, or flexural strength of the examined materials. The sintered composites exhibited a fine-grained microstructure with strengthening phases at the grain boundaries.
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)