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← ScienceWhich risk increases when mechanical stress exceeds a crystal lattice's proportional limit?
A)Accelerated creep at elevated temperature✓
B)Increased piezoelectric charge generation
C)Enhanced thermal conductivity anisotropy
D)Augmented electron-phonon scattering rates
💡 Explanation
Accelerated creep can occur because exceeding the proportional limit initiates dislocation glide along crystal planes within the lattice. This deformation happens because of lattice defects, therefore leading higher deformation rates, rather than direct electronic properties alteration.
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