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← ScienceWhich risk increases when ceramic turbine blade lattices experience high temperature gradients?
A)Increased creep strain accumulation locally✓
B)Rapid oxidation decreases material density
C)Phase transition lowers fracture toughness
D)Grain boundary sliding reduces stiffness
💡 Explanation
Increased creep strain accumulation happens because high temperature gradients cause thermally-activated dislocation climb along lattice defects, resulting in increased plastic deformation under stress. Therefore, local creep strain increases rather than uniform oxidation or phase transitions that reduce overall component lifetime.
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