Showing 801 - 820 results of 9,964 for search '(microstructures OR (microstructural OR microstructure))', query time: 0.20s Refine Results
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    Study on the Microstructure, Mechanical Properties and Wear Performance of Nickel-Chromium-Based Alloy Coatings by DU Dianxi, RUI Shuju, YANG Xingbin

    Published 2025-06-01
    “…In order to enhance the mechanical and wear properties of the surface of 12Cr1MoV steel,a mixture of nickel-chromium alloy powder and nickel-coated tungsten carbide (WC) powder were utilized as raw materials.Laser cladding technology was employed to fabricate a nickelcoated WC nickel-chromium-based alloy coating on the surface of 12Cr1MoV steel.The microstructure, phase composition, mechanical properties and wear performance of the coating were analyzed using scanning electron microscopy, X-ray diffraction (XRD), microhardness testing, impact testing and wear testing machines for particle wear, erosive wear and frictional wear.The effects of varying amounts of nickelcoated WC on the microstructure, phase composition, microhardness, impact performance and resistance to erosive wear, abrasive wear and frictional wear of the coating were investigated.Results showed that the nickel-coated WC coating was characterized by a dense microstructure,with phases including (Ni,Cr) solid solution,Cr23C6,Fe3W3C,Fe6W6C and WC.As the content of nickel-coated WC was increased,the microstructure of the coating was refined,and simultaneous improvements in mechanical and wear properties were achieved.When the nickel-coated WC content reached 30%(mass fraction), the coating structure was dense and significantly refined, and the coating showed high hardness, toughness and wear resistance.The microhardness of the 30%nickel-coated WC coating was 760 HV, with an impact absorbed energy of 54.1 J, along with a low friction coefficient and excellent resistance to frictional wear.The mass loss due to erosive wear and abrasive wear was determined to be 1/28 and 1/48 of the substrate’s mass, respectively.The mechanical and wear properties of the 30%nickel-coated WC coating were found to surpass those of other coatings and the substrate.…”
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    Roles of B and Zr addition on the microstructure and strength in a novel as-cast Ni superalloy by Guonan Zhang, Naiwen Zuo, Yuxi Gao, Jingshun Liu, Yongquan Han, Huaming Wang

    Published 2025-05-01
    “…Despite their extremely low concentrations in nickel-based superalloys, trace elements have a considerable impact on the microstructure and mechanical properties of these materials. …”
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    Impact of process parameter on the behaviors of microstructure of pyrocarbon deposited in chemical vapour infiltration process by Dipoo Kumar, Anil Painuly, V Vinu Viswanath, P Sunil, Deepak Kumar Agarwal, Gomathi Nageswaran

    Published 2025-08-01
    “…The quality and microstructure of the deposited PyC were characterized using Scanning Electron Microscopy (SEM), X-ray Diffraction (XRD), and Raman spectroscopy. …”
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    Residual mechanical, durability and microstructural performance of consortium bio-concrete under elevated temperatures by Priya S Nair, Rajesh Gupta, Vinay Agrawal, Thandiwe Sithole, Blessen Skariah Thomas

    Published 2025-06-01
    “…This study investigates the mechanical, durability, and microstructural properties of post-fired pineapple leaf fiber (PALF)-reinforced bacterial wollastonite concrete (FR-BWC) exposed to elevated temperatures of 200, 400, 600, 800, and 1000 °C. …”
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  12. 812

    The Evolution of Concrete Microstructure and Chloride-Ion Diffusion Coefficient Under Cyclic Axial Compression by Qingzhang Zhang, Mengzhe Zhao, Li Song, Yuhang Yang, Jiaming He

    Published 2025-07-01
    “…In addition, the more complex the microstructure of the concrete, the less its chloride-ion diffusion coefficient is affected by load-induced damage. …”
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    Microstructure and mechanical properties of ethylene pyrolysis furnace tube weld joints after service by Jingfeng Guo, Xiangping Guo, Xiaoyu Li, Guobing Hu, Wenwen Liu

    Published 2025-12-01
    “…The microstructure and mechanical properties of weld joints in ethylene pyrolysis furnace (Cr25Ni35NbM alloy and Cr35Ni45NbM alloy tube) after service were investigated in this work. …”
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    Microstructural characterisation and hardness of Fe-Mn alloys compared to commercial 9%Nickel alloy by Mampuru Lebedike, Phasha Maje, Bodunrin Michael, Klenam Desmond, Moema Joseph

    Published 2024-01-01
    “…Thermomechanically processed alloys are microstructurally assessed and harness tested as the initial evaluation step in selecting high-performing base alloy for further alloying. …”
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  16. 816

    Multiscale characterization of microstructural reconfiguration induced by oxidation in lignite from the Lingquan mining colliery by Jian Chen, Ying Wen, Baoshan Jia, Xiaopeng Mao, Qinai Zhou

    Published 2025-07-01
    “…Abstract The microstructure changes of Lingquan mine oxidized lignite at different oxidation temperatures and the influence of low-temperature oxidation on the spontaneous combustion characteristics of lignite is studied in this paper. …”
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