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  1. 321

    Microstructure and mechanical properties of 1000 MPa grade deposit metals under different welding methods by Zhilong CAO, Tongbang AN, Yue ZUO, Daoping ZENG, Chengyong MA, Yun PENG

    Published 2025-05-01
    “…Optical microscope (OM), scanning electron microscope (SEM) equipped with energy dispersive spectroscopy (EDS), and transmission electron microscopy (TEM), were used to characterize the microstructure of the deposited metal. …”
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    Study on the Microstructure and Wear Resistance of the High-Speed Laser-Cladded Coating on the Cutterhead of Mining Machine by GUO Shirui, DING Shouwen, CUI Lujun, CHEN Shuisheng, DU Quanbin, GUO Chuan, XUE Xiaoqiang

    Published 2025-05-01
    “…To improve the microstructure of the alloy coating and enhance the mechanical properties of the cutter head in coal mining machines,Fe-based alloy cladding layers (S1 and S2) were fabricated on mining cutter head surfaces at two scanning speeds of 0.5 m/min and 12 m/min.The metallographic microstructure, mechanical properties and tribological performance of coatings were systematically characterized by scanning electron microscopy (SEM), Vickers hardness tester, and X-ray diffraction (XRD).Results showed both coatings exhibited dense microstructures without defects such as pores or cracks.The top layer of both laser-clad coatings consisted of equiaxed crystals, the middle layer was composed of columnar crystals, and the bottom layer consisted of planar crystals.Moreover, the overall microstructure of the S2 coating was finer than that of S1, and the overlay layers were primarily composed of an α-Fe solid solution, Cr2B and FeNi.The γ-Fe phase precipitated in S1, while the diffraction angle of the α-Fe phase in S2 shifted to a lower angle than that of S1.Both coatings had higher microhardness than the substrate,with the S2 coating showing the highest microhardness of 651 HV0.5.The strengthening mechanisms of the coating mainly included grain refinement strengthening and solid solution strengthening.Besides, S2 demonstrated the best tribological performance, and the wear rate of the substrate was 7.3 times that of S2.The wear mechanism of the substrate was adhesive wear, whereas that of the coatings was primarily abrasive wear.…”
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  4. 324

    Effect of laser power on microstructure and wear resistance of laser cladding Stellite 6 alloy coatings by ZHANG Wei, SHANG Xianhe, HU Minglei, SUI Fei, HE Xing, ZHOU Liangdong, NI Xiaoqing, ZHANG Liang, KONG Decheng, DONG Chaofang

    Published 2025-04-01
    “…Stellite 6 alloy coatings were prepared on 0Cr17Ni4Cu4Nb stainless steels by laser cladding technology. The microstructure of the coatings was characterized by optical microscopy (OM), scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS), electron backscatter diffraction (EBSD), and confocal laser scanning microscopy (CLSM). …”
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  5. 325

    Effect of Heat Treatment on Microstructure, Acidic Corrosion Resistance and Wear Performance of Low-Carbon Steel by Basiru Philip Aramide, Tamba Jamiru, Taoreed Adegbola, Abimbola Patricia Idowu Popoola

    Published 2025-07-01
    “…This paper looks at how different heat treatment techniques affect low-carbon steel's microstructure, corrosion resistance in acidic settings, and wear performance. …”
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  6. 326

    The Evolutionary Characteristics of Reservoir Microstructure under Long-Term Waterflooding Development and Its Fractal Description by Fengjiao Wang, Xu Wang, Yikun Liu, Qingjun Deng, Jianjun Xu, Yong Zhang, Huaiyuan Li

    Published 2021-01-01
    “…In order to explore the relationship between core micropore structure and water cut, based on physical simulation experiments and fractal theory, we proposed a fractal evolutionary model to describe the evolution characteristics of microstructure of long-term water driving reservoirs. …”
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  7. 327

    Microstructure stability of GH4169 and GH4169C alloys with high content of phosphorus and niobium by NI Tong-wei, DONG Jian-xin, ZHANG Mai-cang, YAO Zhi-hao

    Published 2016-09-01
    “…These two su-peralloys were subjected to aging treatment at 600, 650, 704 and 720℃ for different times from 30 h to 10000 h. The microstructural evolution of the alloys was characterized by using a field emission scanning electron microscope and a Brinell hardness tester. …”
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  8. 328

    Reduced microstructural white matter integrity is associated with the severity of physical symptoms in functional neurological disorder by Nicolas Gninenko, Eliane Müller, Selma Aybek

    Published 2025-01-01
    “…This study aimed to characterize white matter microstructural integrity and its association with patient-reported and clinician-rated physical symptoms’ severity in a large sample of FND patients. …”
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  9. 329

    Microstructure and corrosion resistance properties of 5356 aluminum alloy fabricated by wire and arc additive manufacturing by LIANG Jingheng, ZHENG Ziqin, XU Zhibao, WANG Shuai, HAN Han

    Published 2025-02-01
    “…The 5356 deposited part is produced by a CMT (cold metal transfer) system. The microstructure and hardness are characterized by metallurgical microscope, X-ray diffractometer (XRD), scanning electron microscope (SEM) and micro-hardness tester, and the corrosion resistance behavior is studied by using electrochemical workstation, slow strain rate stress corrosion testing machine. …”
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    Microstructure Refinement or Increased Copper Solubility: Factors That Contribute to the Pitting Corrosion Tendency in Aluminum–Copper Alloys by Akbar Niaz, Muhammad Mudassir Ahmad Alwi

    Published 2025-01-01
    “…The surface refinement was conducted by laser surface melting, and microstructure characterization was conducted by scanning electron microscopy with an energy-dispersive X-ray analysis. …”
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    Evaluation of the Performance and Microstructure of Ecofriendly Construction Bricks Made with Fly Ash and Residual Rice Husk Ash by Chao-Lung Hwang, Trong-Phuoc Huynh

    Published 2015-01-01
    “…This research presents the engineering performance and the microstructural characterization of ecofriendly construction bricks that were produced using a binder material made from a mixture of class-F fly ash (FA) and residual rice husk ash (RHA). …”
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