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Publications (3/3 displayed)
- 2006A comparison of high temperature fatigue crack propagation in sub-solvus heat treated turbine disc alloys
- 2002High temperature fatigue crack growth in powder processed nickel based superalloy U720Licitations
- 2000Effects of grain and precipitate size variation on creep-fatigue behaviour of Udimet 720Li in both air and vacuum
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document
A comparison of high temperature fatigue crack propagation in sub-solvus heat treated turbine disc alloys
Abstract
This paper presents the results of high temperature fatigue tests carried out in air at 725°C on four different materials: N18, RR1000, Udimet 720Li (U720Li) and U720Li Large Grain (U720Li LG) variant. The influence of composition, sub-solvus heat treatments, together with varied cooling rates on grain size and gamma prime size and distribution on fatigue crack propagation behaviour are compared and contrasted.