Live Quiz Arena
🎁 1 Free Round Daily
⚡ Enter ArenaQuestion
← HistoryIn ancient bronze metallurgy performed during casting, which outcome arises from oxygen contamination within the molten alloy?
A)Increased alloy hardness and brittleness✓
B)Enhanced corrosion resistance of final product
C)Improved ductility and malleability of bronze
D)Reduced thermal expansion to prevent cracking
💡 Explanation
Oxygen contamination promotes segregation via oxidation during solidification, forming oxide inclusions and discontinuities. This defect acts as stress concentrators that greatly increase the risk of brittle fracture because grain boundary cohesion significantly reduces, therefore lessening resilience, rather than increasing ductility.
🏆 Up to £1,000 monthly prize pool
Ready for the live challenge? Join the next global round now.
*Terms apply. Skill-based competition.
Related Questions
Browse History →- Which mechanism limited the hull speed of 18th-century sailing ships, irrespective of sail area increase?
- Which risk increased for Roman aqueducts built using travertine?
- Which constraint faced Roman engineers designing fortifications on highly compressible alluvial river deltas?
- Which structural vulnerability increased for late Roman fortifications that incorporated extensive mortar use during construction?
- Which consequence arose more often when Roman road curves exceeded design thresholds?
- Which outcome resulted from the development of the 'pillbox' fortification during the 20th century?
