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← ScienceWhich outcome occurs when exceeding the design temperature limit of a gas turbine engine's high-pressure turbine blades?
A)Blade creep and plastic deformation✓
B)Increased compressor surge margin
C)Improved combustion efficiency overall
D)Reduced turbine disc thermal stress
💡 Explanation
Exceeding temperature limits initiates blade creep because thermally activated dislocation glide within the blade material is exponentially enhanced. Therefore, plastic deformation follows, leading to creep failure, rather than changes to surge margin or combustion efficiency.
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