Article
Materials Science, Multidisciplinary
Mehmet Akif Erden, Fatih Aydin
Summary: The effect of carburization on the tensile strength and wear resistance of AISI 8620 steel produced via powder metallurgy was studied. Carburization at 925 degrees C for 4 hours led to an increase in ultimate tensile strength but a decrease in elongation rate of the alloys. Alloy 2 exhibited lower wear depth values under carburized conditions compared to noncarburized conditions at a load of 30 N.
INTERNATIONAL JOURNAL OF MINERALS METALLURGY AND MATERIALS
(2021)
Article
Nanoscience & Nanotechnology
Jungbin Park, Junhyub Jeon, Namhyuk Seo, Singon Kang, Seung Bae Son, Seok-Jae Lee, Jae-Gil Jung
Summary: The evolution of microstructure and mechanical properties of AISI 4340 steel during high-energy ball milling, spark plasma sintering (SPS), and post heat treatments was investigated. The study found that high-energy ball milling resulted in the formation of a nanocrystalline (-10 nm) bcc Fe matrix with segregation of alloying elements and oxide particles. The as-sintered alloy consisted of martensite-austenite (MA) constituent and fine pearlite, while the quenching after austenitization formed a microstructure composed of martensite and MA constituent. Tempering induced the decomposition of retained austenite and precipitation of cementite particles. The compressive yield strength of the as-sintered alloy was primarily strengthened by dislocations and grain boundaries/cementite lamellae, as well as secondary strengthening by oxide particles.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2023)
Article
Metallurgy & Metallurgical Engineering
Junhao Yang, Rutie Liu, Xiang Xiong, Huaizhuang Luan, Yanrong Hao, Baozhen Yang, Jie Chen
Summary: This paper investigates the preparation of high carbon M2 powder metallurgy high-speed steel using carbonyl iron powder and carbide powder. The microstructure and properties of the material at different sintering temperatures are studied. The results show that different types of carbides are uniformly dispersed in the matrix, and the precipitated carbides change continuously with the increase of sintering temperature. The material sintered at 1225 degrees C exhibits the best mechanical properties.
Article
Materials Science, Multidisciplinary
Mahmut Can Senel, Mevlut Gurbuz
Summary: The addition of boron carbide and graphene to aluminum hybrid composites significantly improved Vickers hardness and compressive strength, with the best performance achieved at 30% boron carbide and 0.15% graphene content.
METALS AND MATERIALS INTERNATIONAL
(2021)
Article
Computer Science, Interdisciplinary Applications
Acar Can Kocabicak, Magd Abdel Wahab
Summary: This paper investigates the plastic deformation mechanism, hardness and mechanical properties, stress distribution, and strain of AISI 5140 steel during flow forming process through experimental and numerical simulation. The results show significant improvement in hardness and mechanical properties of the part after flow forming.
SIMULATION MODELLING PRACTICE AND THEORY
(2022)
Article
Materials Science, Coatings & Films
Nilesh Kumar Paraye, Suruj Protim Neog, Prakriti Kumar Ghosh, Sourav Das
Summary: In this study, in-situ grown titanium carbide reinforced steel matrix was produced using tungsten inert gas (TIG) arcing, with thorough analysis of the microstructure, chemical composition, and formation of TiC precipitate particles. By varying the TIG arcing parameters, the concentration of TiC precipitates in the modified region was found to be affected, resulting in significant enhancement in hardness and wear resistance of the modified surface. The presence of titanium carbide precipitates in the modified surface was confirmed through XRD analysis, showcasing the effectiveness of the surface modification process.
SURFACE & COATINGS TECHNOLOGY
(2021)
Article
Chemistry, Physical
P. Bharathi, T. Sampath Kumar
Summary: In this study, aluminium 7075 was reinforced with different wt% of silicon carbide (SiC) and aluminium 7075 hybrid composites with constant wt% of boron carbide (B4C) were fabricated. The microstructural study showed a uniform distribution of SiC and B4C particles throughout the aluminium matrix. Higher hardness and compressive strength values were observed for certain composites. The density of hybrid composites and the surface nature of different composites also had notable effects. Thermal conductivity, wear rate, and corrosion resistance were also investigated.
Article
Materials Science, Multidisciplinary
Francisca Rocha, Sonia Simoes
Summary: This research focuses on producing and characterizing an aluminum matrix reinforced with silicon carbide (SiC) nanometric particles. The dispersion agent was investigated, and isopropanol leads to better dispersion with fewer agglomerates. Increasing the volume fraction of the reinforcement improves the hardness of the nanocomposites, but also results in greater agglomeration of the reinforcement.
Article
Materials Science, Multidisciplinary
Esra Zengin, Hayrettin Ahlatci, Huseyin Zengin
Summary: This study investigated the microstructure, tribological, and corrosion properties of carbon nanotubes (CNTs) reinforced stainless steel matrix composites. The addition of CNTs resulted in improved hardness and wear resistance, but also increased the susceptibility to pitting corrosion with higher CNT content.
MATERIALS TODAY COMMUNICATIONS
(2021)
Article
Chemistry, Physical
Marina Samodurova, Nataliya Shaburova, Olga Samoilova, Ahmad Ostovari Moghaddam, Kirill Pashkeev, Vladimir Ul'yanitckiy, Evgeny Trofimov
Summary: This paper focuses on the characterization of WC-10Co-4Cr coating deposited on an Al-4Cu-1Mg alloy using detonation spray method. The results showed that the coating has low porosity and refined carbide grains. The variation of spraying distance did not influence the coating microstructure and composition.
Article
Materials Science, Multidisciplinary
Jianbin Wang, Zhijun Wang, Qingfeng Wu, Yunhao Huang, Junjie Li, Feng He, Lei Wang, Jincheng Wang
Summary: Phase-selective recrystallization and aging significantly improve the tensile properties of a low-cost dual-phase Fe37Ni36Cr10Al17 alloy, resulting in a uniform equiaxed microstructure and increased elongation.
Article
Materials Science, Multidisciplinary
Yun Wang, Li Zhang, Xun Li, Zhao Yan
Summary: The study demonstrates that the use of hot isostatic pressing sintering can reduce the porosity of FFF metal parts and improve mechanical properties, eliminating the impact of pore chains and alleviating tensile property anisotropy.
Article
Materials Science, Multidisciplinary
Chengtao Yu, Qunchang Wang, Minghui Chen, Fuhui Wang
Summary: FGH 97 alloy and its composite with TiC addition were prepared by spark plasma sintering. TiC particles were dissolved into the alloy matrix during ball milling, but precipitated out in-situ as MC solid solution with semi-coherent interface after sintering, resulting in a homogeneous and fine microstructure. After exposure to 900 degrees C for 300 h, the grain size only grew by 31%. The fine microstructure promoted selective oxidation of Al and ensured high oxidation resistance of the composite FT. The precipitated carbides increased oxidation resistance of FT and endowed its oxide scale with self-healing ability for long-term oxidation.
Article
Chemistry, Physical
Michal Krbata, Robert Ciger, Marcel Kohutiar, Maros Eckert, Igor Barenyi, Bohdan Trembach, Andrej Dubec, Jana Escherova, Matus Gavalec, Nad'a Beronska
Summary: This paper focuses on the dilatometric study of M398 tool steel and its application in plastic industry. The experiment compares the experimentally measured CCT diagram with the simulated one using JMatPro v7.0 software. The microstructural analysis was evaluated by SEM and the chemical element distribution was evaluated by EDS analysis. Furthermore, the surface hardness and nanoindentation properties of the formed phases and carbides were also studied.
Article
Automation & Control Systems
Zhuoyuan Li, Jian Zhang, Yang Liu, Qingmao Zhang, Xizhang Chen, Shufeng Sun, Namrata Gangil, Arshad Noor Siddiquee
Summary: Laser surface quenching treatment can significantly improve the microstructure of steel and eliminate defects, and the laser energy density plays a key role in the dissolution of carbides, with higher energy density producing better results.
INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY
(2022)
Article
Materials Science, Multidisciplinary
Deyong Zheng, Huihui Jin, Yucong Liao, Pengxia Ji
Summary: In this study, a highly stable and efficient catalyst, fluorine-doped Co3O4 (F-Co3O4), was developed for hydrogen production by water electrolysis. The F-Co3O4 catalyst exhibited a remarkable reduction in overpotential and demonstrated excellent stability for over 100 hours.
Article
Materials Science, Multidisciplinary
Ziwen Lv, Jintao Wang, Fengyi Wang, Jianqiang Wang, Fuquan Li, Hongtao Chen
Summary: Adding Cu6Sn5 nano particles can effectively inhibit the overgrowth of intermetallic compounds at the interfaces of solder joints in electronic devices, providing a solution to this issue. A new growth mechanism of intermetallic compounds at the interfaces was identified.
Article
Materials Science, Multidisciplinary
Jun Wang, Jiawei Chen, Wanru Liao, Fangyang Liu, Min Liu, Liangxing Jiang
Summary: A BiOI/AgI/Ag plasmonic heterostructure photocathode was successfully designed through electrodeposition, ion-exchange, and illumination methods. This photocathode exhibits superior performance in photoelectrochemical water splitting.
Article
Materials Science, Multidisciplinary
Xiaoxiao Liu, Xianxian Zhou, Xiaotao Ma, Qinbo Yuan, Shibin Liu
Summary: In this study, the authors propose a method to accelerate the reaction of polysulfides in lithium-sulfur batteries using a Ni@OC Mott-Schottky heterojunction as a catalyst. The experimental results demonstrate that the charge redistribution at the Ni@OC interface accelerates electron transfer and enhances catalytic activity, leading to improved reaction kinetics and battery performance.
Article
Materials Science, Multidisciplinary
Dayou Ma, Mohammad Rezasefat, Joziel Aparecido da Cruz, Sandro Campos Amico, Marco Giglio, Andrea Manes
Summary: The matrix has a significant effect on the impact resistance of composite materials. Replacing a brittle polymer with a more flexible one can improve impact resistance, but it poses challenges to standard testing methods. This study designs a new fixture for testing the low-velocity impact of soft composites and investigates the effect of the fixture on the mechanical performance.
Article
Materials Science, Multidisciplinary
Lingchang Wang, Qihang Yang, Huzhen Li, Ming Wei, Qian Wang, Zhenzhong Hu, Mengmeng Zhen
Summary: Bronze titanium dioxide (TiO2(B)) is a promising anode material for lithium-ion batteries due to its high specific capacity. However, its practical applications are hindered by poor conductivity and limited electrochemical kinetics. In this study, TiO2(B)-carbon nanosheets heterostructures are synthesized to enhance the cycling performance and rate capability of TiO2(B).
Article
Materials Science, Multidisciplinary
Atul Thakur, Ritesh Verma, Ankush Chauhan, Fayu Wan, Preeti Thakur
Summary: In this study, BaFe12O19 and BaFe12O19: Epoxy (50:50) nanocomposites were synthesized using the co-precipitation method. The structural information and material properties, such as crystallite size and electrical conductivity, were characterized by XRD, FESEM, EDX, and TEM techniques.
Article
Materials Science, Multidisciplinary
Jingyu Wu, Xinyan Ma, Yong Yang
Summary: A well-defined CoS2@NC(CS-500) hierarchical binder-free catalyst cathode is constructed through in-situ grown of ZIF-67 on carbon cloth and high-temperature carbonization. The cathode shows excellent reaction kinetics and electrochemical performance, providing inspiration for developing advanced Li-CO2 battery catalysts.
Article
Materials Science, Multidisciplinary
Svetlana M. Posokhova, Vladimir A. Morozov, Kirill N. Boldyrev, Dina Deyneko, Erzhena T. Pavlova, Bogdan I. Lazoryak
Summary: This study explores the impact of synthesis method and composition on the structure and luminescence properties of K5Eu1-xHox(MoO4)4 with the palmierite-type matrix. The co-doping of Eu3+ and Ho3+ ions plays a critical role in manipulating charge transfer and luminescence efficiency in the visible and infrared regions.
Article
Materials Science, Multidisciplinary
Jian Wang, Yeting Tao, Jingsheng Wang, Youtian Tao
Summary: A new electron-transport material iTPyBI-CN is developed through non-catalytic C-N coupling reaction. It exhibits better electroluminescence efficiency in organic light-emitting diodes compared to the commercial material TPBI, due to its twisted geometry and higher energy levels.
Article
Materials Science, Multidisciplinary
Tao Zhu, Feng Huang, Shuo Li, Yang Zhou
Summary: This article combines XRD analysis and microscopic structural observation to investigate the changes in limestone after high-temperature treatment. It finds that 500 degrees C is the critical temperature for crystalline and spatial arrangement changes in limestone, and the thermal conductivity, specific heat capacity, and heat storage coefficient gradually decrease after thermal treatment.
Article
Materials Science, Multidisciplinary
Muhammad Haekal Habibie, Fransiska Sri Herwahyu Krismastuti, Abdi Wira Septama, Faiza Maryani, Vivi Fauzia
Summary: This study focuses on the synthesis of zinc oxide nanostructure from zinc recovered from galvanization ash and highlights its potential as a sustainable source of zinc and as an antibacterial agent.
Article
Materials Science, Multidisciplinary
Jingyi Li, Yixin Xing, Wei Gu, Shousi Lu
Summary: In this study, PC@CaP microparticles were fabricated using biomimetic mineralization. The results showed that under environmental stress, PC@CaP exhibited improved stability and antioxidative activity, indicating its potential use in high-added value fields.
Article
Materials Science, Multidisciplinary
Yan Liu, Shunyou Chen
Summary: In this study, TNTs were used as a drug carrier and modified with ZIF-8 and silk fibroin to obtain a new drug loading platform. The results showed that this drug-loaded platform had a good drug release effect in vitro and could promote cell proliferation and osteogenic differentiation.
Article
Materials Science, Multidisciplinary
Chunhui Zhu, Wentao Wang, Qing Zhen, Xinning Huang, Shixin Li, Shaochang Wang, Xiaoping Ma, Xiaoxia Liu, Yalong Jiao, Kai Sun, Zhuangzhi Li, Huaixin Yang, Jianqi Li
Summary: A type of stacking fault is revealed in e-InSe crystal, which is associated with a small stacking-fault energy and shows exceptional plasticity.