Abstract
We have investigated the characteristics of cyclic crack resistance of V95pchT1 alloy in the initial state and after model degradation and of V95T1 alloy after operation for 40 years in the upper wing skin of an AN-12 airplane at room and low (–60°C) temperatures. We have recorded a decrease in the characteristics of cyclic crack resistance of both degraded alloys as compared with their initial state and revealed the low-temperature embrittlement of V95T1 alloy. The influence of intermetallic inclusions on the decrease in the characteristics of cyclic crack resistance of V95-type alloys after operational degradation has been analyzed.
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