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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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Nanocrystallization of zirconium subjected to surface mechanical attrition treatment
Nanotechnology, 2008A nanostructured surface layer with thickness of about 20 µm was formed on commercially pure zirconium using surface mechanical attrition treatment (SMAT). The microstructural features of the surface layer were systematically investigated using optical microscopy (OM), x-ray diffraction (XRD), transmission electron microscopy (TEM) and high-resolution ...
L, Zhang, Y, Han, J, Lu
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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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Long distance chemical gradient induced by surface nanocrystallization
Applied Materials Today, 2019Abstract Natural structures are wonderful examples of what can be done with a fairly limited selection of resources. Natural structures have this feature due to their complex architecture, gradient chemical compositions and microstructure. Inspired by nature, many attempts have been made to manufacture man-made materials with similar gradients (e.g ...
Qingqing Sun +5 more
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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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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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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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Simulation for surface self-nanocrystallization under shot peening
Acta Mechanica Sinica, 2003Driven by high frequency and multi-directional shot peens, dislocations of various orientations proliferate into the metal, and accumulate in high density in the surface layer of a shallow depth. Migration, generation and annihilation of dislocations dictate the evolution of mobile dislocation density.
MA Xinling, Wang Wei, Yang Wei
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Materials and Corrosion, 2021
A newly developed technology, rotationally accelerated shot peening (RASP), was used to produce the nanocrystals on the surface of 316LN stainless steel.
Xudong Chen +4 more
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A newly developed technology, rotationally accelerated shot peening (RASP), was used to produce the nanocrystals on the surface of 316LN stainless steel.
Xudong Chen +4 more
semanticscholar +1 more source