Improvement of Wear Resistance of Magnesium Alloy AZ91HP by High Current Pulsed Electron Beam Treatment

查看全文 作　　者：[1]GAOBo;HAOSheng-[1]zhi;ZOUJian-[1]xin;JIANGLi-[1]min;ZHOUJI-[3]yang;[1]DONGChuang 机构地区：[1]StateKeyLab.ofMaterialssurfaceModificationbyLaser,IonandElectronBeams,Datian,China;[3]StateKeyLab.ofMaterialssurfaceModificationbyLaser,IonandElectronBeams,Datian,China//DepartmentofMaterialsEngineering,DalianUniversityofTechnology,Dalian,China 出　　处：《材料热处理学报》索引2004年第25卷第05B期,共3页 摘　　要：Surface modification of magnesium alloy AZ91HP (9wt%Al, 0.5wt%Zn, 0.5wt%Mn, Mg remaining percentage) by high current pulsed electron beam (HCPEB) treatment was studied in this paper. The secondary phase MgnAln is nearly completely dissolved and as a result, a super-saturated solid solution forms on the re-melted surface. The microhardness is increased both in and far beyond the heat-affected zone (HAZ), reaching about 250um. Measurements on sliding wear have shown that the wear resistance of the treated samples was improved by a factor of about 2.4 as compared to the as-received sample. It is also found that the sliding wear resistance can be further improved by surface alloying with TiN. 关 键 词：镁合金 HCPEB 磨损性能 AZ91HP 表面改性 高电流脉冲电子束