Which outcome resulted from incomplete annealing during early cast iron production?

💡 Explanation

Increased susceptibility to brittle fracture occurred because residual stress concentrations remained after casting; the annealing process relieves this via stress-relaxation, therefore decreasing brittleness, rather than enhancing other properties because the microstructure remains inhomogeneous and weak.

• Which outcome occurred during Byzantine silk production when legal protection preventing raw silk export from Tyrian merchants failed?
• Which sailing outcome developed slowly in Viking roundships when increased cargo lowered ballast, affecting steering?
• Which material migration resulted from ancient Mesopotamian canal construction?
• Which navigational error increases when celestial observations are matched to chronometer time in a pre-1900 vessel?
• Which outcome results when 'qanat' channels experience extensive silt deposition?
• Which risk arose when using torsion catapults to hurl incendiary projectiles at wooden fortifications?