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← HistoryWhich outcome arose when early steelmakers exceeded the carbon solubility limit in iron during the cementation process?
A)Formation of brittle cast iron✓
B)Increased tensile strength of steel
C)Production of malleable wrought iron
D)Prevention of iron oxide formation
💡 Explanation
When carbon solubility is exceeded, excess carbon precipitates as iron carbide because of thermodynamic constraints, embrittling the metal. Therefore, brittle cast iron results, rather than stronger steel or malleable iron, which require controlled carbon content and different processing conditions.
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