VibraXX
Live Quiz Arena
🎁 1 Free Round Daily
⚡ Enter Arena
HomeCategoriesScienceQuestion
Question
Science

Which risk increases when molten steel exits a blast furnace?

A)Rapid phase change embrittles surface
B)Sulfur contamination decreases impact toughness
C)Increased carbon induces brittle fracture
D)Hydrogen weakens steel grain boundaries

💡 Explanation

The rapid cooling causes **martensitic transformation**, which increases the steel's hardness, but also embrittles it because the crystal structure changes rapidly. Therefore, a quench leads to surface cracking, rather than embrittlement from elemental contaminants at lower levels.

🏆 Up to £1,000 monthly prize pool

Ready for the live challenge? Join the next global round now.
*Terms apply. Skill-based competition.

⚡ Enter Arena

Related Questions

Browse Science