Which risk increases during annealing if grain growth is unconstrained in a polycrystalline alloy?

💡 Explanation

Unconstrained grain growth facilitates larger grain sizes decreasing yield strength because Hall-Petch strengthening diminishes as grain boundaries per unit volume decrease. Grain boundary migration causes lattice defects, therefore reducing resistance to deformation, rather than increasing toughness because dislocations accumulate at grain boundaries.

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