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← HistoryWhich risk increases when surface pressure exceeds material yield strength surrounding 'pietra dura' inlay in Mughal-era structures?
A)Accelerated creep within inlaid joints✓
B)Formation of passivation layers shifts
C)Fouling by mineral deposit accretion
D)Thermally-induced grain boundary segregation
💡 Explanation
Accelerated creep occurs when the material undergoes sustained stress, resulting in slow, permanent deformation due to increased pressure. This is because increased grain boundary SLIDING allows materials to flow under sustained stress. Therefore, creep accelerates, rather than passivation, fouling or grain changes which happen under different conditions.
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