Fretting Fatigue Cracking Process of a Ti-10V-2Fe-3Al Titanium Alloy
Fretting fatigue cracking response of a Ti-10V-2Fe3Al titanium alloy was investigated in high cycle fatigue. Tests were conducted in a plain cylinder on plane configuration and partial slip condition was considered. In this study, a dual-actuator fretting fatigue machine is used which permits to separate both fretting and fatigue loadings. In this configuration, crack initiation was firstly analysed though interrupted test at 106 cycles and an optical cross-section expertise methodology. Crack initiation boundary was experimentally built in a fatigue loading - fretting loading graph, named Fretting Fatigue Map. Then crack propagation was considered using the potential drop technique. The careful calibration procedure used in this paper allows monitoring crack depth from about 50μm in depth until the complete failure of the fretting fatigue sample. Experimental results show that the addition and the increase of a fatigue loading involves in a decrease of the tangential threshold for crack nu-cleation compared to fretting loading. As expected, the increase of the fatigue loading induces an increase of the crack velocity after nucleation but induces also an earlier nucleation. Crack initiation and propagation are both influenced by the two loadings. Based on these results,a numerical approach was finally proposed to predict the crack nucleation of a Ti-10V-2Fe-3Al titanium alloy in fretting fatigue conditions.
Fretting fatigue crack nucleation crack propagation Ti-10V-2Fe-3Al
Stephane Heredia Siegfried Fouvry Bruno Berthel Jerome Panter Eric Greco
Laboratoire de Tribologie et Dynamique des Systemes (LTDS),Ecole Centrale de Lyon,69134 Ecully cedex Laboratoire de Tribologie et Dynamique des Systemes (LTDS),Ecole Centrale de Lyon,69134 Ecully cedex EUROCOPTER,Aéroport Marseille/Provence,13725 Marignane Cedex,France
国际会议
The 12th World Conference Titanium(第十二届世界钛会 Ti-2011)
北京
英文
1991-1994
2011-06-19（万方平台首次上网日期，不代表论文的发表时间）