Nanostructure Formations and Improvement in Corrosion Resistance of Steels by Means of Pulsed Electron Beam Surface Treatment

Abstract

The corrosion of steels has long been the topic for materials scientists. It is established that surface treatment is an efficient way to improve the corrosion resistance of steels without changing the bulk properties and with low costs. In the present paper, different kinds of surface treatment techniques for steels are briefly reviewed. In particular, the surface modification involving nanostructure formations of steels by using a low energy high pulsed electron beam (LEHCPEB) treatment is lightened in the case of an AISI 316L stainless steel and D2 steel. The overall results demonstrate the high potential of the LEHCPEB technique for improving the corrosion performance of steels.

Nanocrystallization of Coarse Primary Phases in Al‐ and Mg‐Based Alloys Induced by HCPEB Treatment

“…Consequently, nonequilibrium phase and structural transformations occur in the beam-affected zone, including a metastable structure or phase states on the surface layer [11,12]. The combination of influencing factors unique to HCPEB treatment can induce the formation of nanocrystalline layers in the near-surface regions of metallic materials [10][11][12]. The present study reports on the nanocrystallization of coarse primary phases in Al-and Mg-based alloys induced by HCPEB.…”

“…The electron beam causes intense and superfast melting as well as evaporation and solidification on the surface of target materials, thereby creating thermal stress and shockwaves. Consequently, nonequilibrium phase and structural transformations occur in the beam-affected zone, including a metastable structure or phase states on the surface layer [11,12]. The combination of influencing factors unique to HCPEB treatment can induce the formation of nanocrystalline layers in the near-surface regions of metallic materials [10][11][12].…”