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

作     者：GAOBo HAOSheng-zhi ZOUJian-xin JIANGLi-min ZHOUJI-yang DONGChuang 

作者机构：StateKeyLab.ofMaterialssurfaceModificationbyLaserIonandElectronBeamsDatianChina StateKeyLab.ofMaterialssurfaceModificationbyLaserIonandElectronBeamsDatianChina／／DepartmentofMaterialsEngineeringDalianUniversityofTechnologyDalianChina 

出 版 物：《材料热处理学报》 (Transactions of Materials and Heat Treatment)

年 卷 期：2004年第25卷第5B期

页      面：1029-1031页

核心收录：

学科分类：08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0802[工学-机械工程] 0704[理学-天文学] 080201[工学-机械制造及其自动化] 0702[理学-物理学] 

主　　题：镁合金 HCPEB 磨损性能 AZ91HP 表面改性 高电流脉冲电子束 

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.