Study on the Methods of the Surface Self-Nanocrystalline Technology and its Effect on the Materials Properties

Using the surface self-nanocrystalline technology can produce dense nano layer without the defects such as pores. The surface self-nanocrystalline technology can improve the micro hardness, abrasive resistance, fatigue durability, corrosion resistance and other combination properties. It is with wide application prospect in the industrial area. In this article, the application investigation of the surface self-nanocrystalline technology such as the surface mechanical polishing method, ultrasonic impacting method, ultra sound peening ect. improving the prehensive properties of the materials are summed up. And the study work of the surface self-nanocrystalline technology in the future is prospected here.