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← HistoryWhich consequence occurred when the alloy ratios shifted during cannon casting?
A)Increased corrosion rates developed
B)Dimensional tolerances became unachievable
C)Fracture brittleness increased rapidly✓
D)Tensile strength drastically decreased
💡 Explanation
Increased fracture brittleness occurred because reduced carbon control led to increased cementite formation via phase separation. During cooling, cementite precipitated at grain boundaries results in cracking, therefore fracture brittleness, rather than strength reduction, increased.
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