Question

Creep, a high temperature progressive deformation, occurs in __________ stages.

• A. Five
• B. Four
• C. Three
• D. Two

Answer 1

Answer:

C. Three

Creep is time-dependent deformation in materials under constant load at high temperature. It occurs in three stages - primary, secondary, and tertiary. The creep rate decreases in primary creep, becomes linear in secondary creep, and increases in tertiary creep leading to necking and fracture.