Abstract:Fatigue crack propagation (FCP) -rates and -threshold values have been determined on the titanium alloys 1M1 834. IMI 685 (turbine disk materials) and Ti-6AIMV-2Sn (plate material). K,,;,,-constant tests were executed in laboratory air at room temperature and run with 50 Hz o n C(T) specimens. It was found that FCP-rates in K,,',,-constanl tests followed the well known FCP behavior up t o a certain limiting value K,,,,,, denoted as "K,l,i,x. Below "K,,,zl,. the FCP-rates da/dN decrease with decreasing AK down … Show more
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