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论文类型：期刊论文

发表时间：2009-03-20

发表刊物：5th International Conference on Advanced Materials and Processing

收录刊物：SCIE、CPCI-S、Scopus

卷号：23

期号：6-7

页面范围：1713-1718

ISSN号：0217-9792

关键字：Surface modification; high current pulse electron beam; microstructure; wear; corrosion

摘要：High current pulsed electron beam (HCPEB) has been developing as a useful tool for surface modification of materials. This paper presents our research work on surface modification of metallic materials, such as mold steel, stainless steel and magnesium alloy, with a HCPEB equipment of working parameters as electron energy 27keV, pulse duration similar to 1 mu s and energy density similar to 5J/cm(2). Investigations performed have shown that the most pronounced changes of phase-structure state and properties occurring in the near-surface layer. The formation mechanism of surface craters and their evolution regularity are discussed based on the elucidation of non-equilibrium temperature filed and different kinds of stress formed during pulsed electron beam treatment. After the HCPEB treatments, samples show significant improvements in measurements of wear and corrosion resistance.