Results 171 to 180 of about 1,054 (210)
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Investigation of surface nanocrystallization of 45 steel
International Technology and Innovation Conference 2006 (ITIC 2006), 2006By means of Supersonic Fine Particles Bombarding (SFPB), a nanostructured surface layer was fabricated on a 45 Steel plate consisted of pearlite and ferrite phases. The microstructure features of various sections in the treated surface layer were characterized by using X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron ...
null Ba Dema +3 more
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Surface nanocrystallization of stainless steel for reduced biofilm adherence
Nanotechnology, 2008Stainless steel is one of the most common metallic biomedical materials. For medical applications, its resistance to the adherence of biofilms is of importance to the elimination or minimization of bacterial infections. In this study, we demonstrate the effectiveness of a process combining surface nanocrystallization and thermal oxidation (or a ...
Bin, Yu +4 more
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Surface Nanocrystallization of Zircaloy-4 by Surface Mechanical Attrition Treatment
Materials Science Forum, 2010A nanostructured surface layer was induced on zircaloy-4 by the method of surface mechanical attrition treatment (SMAT). X-ray diffraction and microhardness tester were applied to identify the average grain size and hardness of specimen processed for different duration, transmission electron microscopy and high-resolution transmission electron ...
Cong Hui Zhang +3 more
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Thermal Stability of 40Cr Steel with Surface Nanocrystallization
Materials Science Forum, 2006Surface Nanocrystallization(SNC) is a new method of fabricating nanostructured materials while thermal stability is an important problem for the application of nanostructured materials. A nanostructured layer was fabricated on the surface of 40Cr steel by Supersonic Particles Bombarding method, and the variation of microstructure and microhardness of ...
Yu Liang Liu, Tian Ying Xiong, Ke Yang
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Surface Nanocrystallization of Pure Ni Induced by Ultrasonic Shot Peening
Science of Advanced Materials, 2014Peening is mainly used as a method of surface treatment for microstructural modification in order to improve surface mechanical properties. The ultrasonic shot peening (USP) technique can cause severe plastic deformation with its high strain rate on the surface of metallic parts.
Kejian, Li +9 more
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The Refinement of the pearlite on Surface nanocrystallization of medium steel
2011 International Conference on Remote Sensing, Environment and Transportation Engineering, 2011Nanocrystalline surface layer was fabricated on a 45 steel by using Surface mechanical treatment. The microstructure features of various sections in the surface layer were characterized by using transmission electron microscopy and X-ray diffraction. The Refinement process of the pearlite was analyzed.
null Dema Ba +2 more
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Surface nanocrystallization of C45E4 steel by ultrafast electropulsing-ultrasonic surface treatment
Journal of Wuhan University of Technology-Mater. Sci. Ed., 2017The effect of high-energy electropulsing-ultrasonic surface treatment (EUST) on the surface properties and the microstructure evolution of C45E4 steel was investigated. Refined microstructure and reduced surface roughness were obtained owing to the surface nanocrystallization process.
Long Chen +4 more
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Microstructural characteristics of PEO coating: Effect of surface nanocrystallization
Journal of Alloys and Compounds, 2020Abstract The microstructural characteristics of plasma electrolytic oxidation (PEO) coating and the formation mechanism of the barrier layer in the coating were investigated. Transmission electron microscopy, high-resolution transmission electron microscopy, and scanning transmission electron microscopy-high-angle annular dark-field imaging were used
Ni Ao +3 more
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Research on Surface Nanocrystallization of Surfacing Layer by Pre-loading Rolling Technology
Integrated Ferroelectrics, 2015The surface microstructure of the surfacing layer was optimized by refining the coarse grains to nanocrystalline by means of pre-loading rolling treatment(PLRT). By using of field emission scanning electron microscope and transmission electron microscopy observations, the microstructural features in the treated surfacing layer were characterized, and ...
Dema Ba, Fanjun Meng
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Investigation of Surface Nanocrystallization by Pre-Forceing Rolling Technology
Advanced Materials Research, 2013For solving fatigue failure of surface on the metal parts, the Surface Nanocrystallization technology by pre-forceing rolling was developed. The feature and operaing principle of equipment were introduced. A nanocrystalline surface layer was fabricated on deposited layer by using pre-forceing rolling technology (PFRT) .The microstructure of treated ...
Jia Wu He, Shi Ning Ma, De Ma Ba
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