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

Which outcome occurs when high stress changes grain structures?

A)Increased fatigue crack propagation rate
B)Enhanced galvanic corrosion protection
C)Raising the ductile-brittle transition temperature
D)Decreased wear rates during boundary lubrication

💡 Explanation

Increased stress at grain boundaries induces dislocation slip, causing microcrack initiation, leading to fatigue crack propagation, because this is strain induced and accelerates failure stages. Therefore, fracture rate rises, rather than improved corrosion due to cracks promoting failure.

🏆 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