The Effect of Shot Peening on the Fatigue Strength of Pure Titanium
来源期刊：材料热处理学报2004年第5期
论文作者：ZHANG Jian-bin YU Shu-rong FAN Ding
关键词：titanium; microstructure; fatigue;
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.
ZHANG Jian-bin1，YU Shu-rong1，FAN Ding1
(1.State Key Laboratory of Advanced Nonferrous Metal Materials, Lanzhou University of Technology, Lanzhou, China)
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.
关键词:titanium; microstructure; fatigue;
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