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← HistoryWhich consequence results when ancient Chinese iron pots shatter?
A)Molten iron carbide formation increases
B)Decarburization promotes brittle fracture modes✓
C)Sudden boiling delays liquidus temperature
D)Contamination reduces melting point locally
💡 Explanation
Decarburization causes brittle fracture because carbon diffuses out of iron at high temperatures, promoting ferrite formation, therefore grain boundary fracture sensitivity happens faster, rather than increasing molten iron carbide or sudden boiling locally.
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