The Effect of Shot Peening on the Fatigue Strength of Pure Titanium  

作　　者：ZHANGJian-bin FANDing YUShu-rong 

机构地区：[1]StateKeyLaboratoryofAdvancedNonferrousMetalMaterials,LanzhouUniversityofTechnology,Lanzhou,China

出　　处：《材料热处理学报》2004年第5期271-274,共4页Transactions of Materials and Heat Treatment

摘　　要：The changes of the substructure, the residual stress and the surface roughness of shot peened pure titanium were analyzed by means of SEM, TEM, XRD and surface roughness measurements in this paper. The results show that shot peening increased the fatigue strength of pure titanium. The substructures of shot peened pure titanium consist of dislocations, deformation twins and deformation bands. Fatigue loading will relax the compressive residual stress and decrease the strengthening effect. The increased surface roughness has negative effects.The changes of the substructure, the residual stress and the surface roughness of shot peened pure titanium were analyzed by means of SEM, TEM, XRD and surface roughness measurements in this paper. The results show that shot peening increased the fatigue strength of pure titanium. The substructures of shot peened pure titanium consist of dislocations, deformation twins and deformation bands. Fatigue loading will relax the compressive residual stress and decrease the strengthening effect. The increased surface roughness has negative effects.

关 键 词：钛 显微结构 喷丸硬化 疲劳 

分 类 号：TG166.5[金属学及工艺—热处理]