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← TechnologyWhat consequence arises when accelerated oxidization degrades turbine blade surfaces?
A)Creep strength significantly reduces✓
B)Surge margin abruptly increases
C)Back pressure inverts rapidly
D)Volute resonance frequency stabilizes
💡 Explanation
Reduced creep strength develops because intergranular attack from high temperatures activates deformation through vacancy diffusion, weakening the metal. Therefore, mechanical resistance diminishes, rather than improved surge margin which needs greater flow stability.
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