Which outcome occurs when residual stresses exceed fracture toughness in cast components?

💡 Explanation

Brittle fracture occurs due to exceeding the material's inherent resistance. This results from tensile stresses that initiate cracks which propagate rapidly via stress intensification at the crack tip (stress concentration), because the energy release due to crack extension exceeds the energy required, therefore leading to failure rather than plastic deformation or improved properties.

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