钛合金及其扩散焊疲劳特性研究进展

李细锋, 李天乐, 安大勇, 吴会平, 陈劼实, 陈军

Research Progress of Titanium Alloys and Their Diffusion Bonding Fatigue Characteristics

LI Xifeng, LI Tianle, AN Dayong, WU Huiping, CHEN Jieshi, CHEN Jun

图13 Ti550/TC4合金扩散焊接头和疲劳性能[83]

Fig.13 Joints and fatigue properties of Ti550/TC4 alloys by diffusion bonding[83] (a) cylindrical geometry of low cycle fatigue (LCF) specimens (unit: mm) (b) microstructure of Ti550/TC4 (Ti6/4) titanium alloys (c) LCF S-N curves of Ti550/TC4 specimens compared with the S-N curves of traditional TC4 (solid line) and Ti550 (dotted line) alloys (Nf—number cycle to failure, ST—solution treatment, NFD—non-fusion defect)