typical-duration-and-temperature-level-of-overheating1001021041061081010Seconds Minutes Hours 100 Hours 10,000 Hours Duration and level of temperatures in the turbine in case of typical causes of overheating:MeltingSofteningStructuralchangesIncreasedoxidationNormaltemperature levelWorsened temperaturemeasurementDeteriorationOvertemperature duringstart-upRegulator malfunctionCombustion chamber damageInjection system problemsOverheating time [s]Titanium fireStallInsufficientdrainageMaterial temperatureLack of cooling airBreaking-out ofthermal barriersDamages and damage symptoms:MeltingHot cracksRolling-up of diffusion coatingsKirkendall effectSolution annealing effectsGrain growthPermanent strength lossCreep deformationPore formationIncreased thermal fatigueIncreased oxidation