Topic: Material Science
Below the ductile to brittle transition temperature, weld joints show
- A. High ductility
- B. High toughness
- C. Low toughness
- D. Ductile fracture
Answer: C. Low toughness
Explanation: Below the ductile to brittle transition temperature, materials undergo brittle fracture and weld joints show low toughness. Toughness is the area under the stress-strain curve, and for brittle materials, it is significantly lesser than for ductile materials.