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Which risk increases for Damascus steel blades when wrought iron purification is inadequate?

A)Increased retained austenite formation
B)Elevated carbon nanotube aggregation
C)Accelerated oxidative degradation
D)Reduced cementite particulate distribution

💡 Explanation

Inadequate purification leaves sulfur impurities in the wrought iron, causing accelerated oxidative degradation because of increased grain boundary corrosion enabled by these impurities. Therefore, the blade's lifespan decreases rather than benefiting from refined carbide alignment as in higher purity methods.

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