Question

Which of the following metallurgical changes that affect the structural stability of metals at high temperatures?

(a) Grain growth, phase changes, precipitation dissolution and precipitation over aging

(b) Grain growth and phase changes

(c) Precipitation dissolution and precipitation over aging

(d) Phase changes, precipitation dissolution and precipitation over aging

I got this question in an interview for job.

My question is based upon High Temperature Materials in division High Temperature Corrosion of Corrosion Engineering

Answer 1

Right option is (a) Grain growth, phase changes, precipitation dissolution and precipitation over aging

Best explanation: Metallurgical changes that affect the structural stability of metals at high temperature are:

i. Grain growth

ii. Phase changes

iii. Precipitation dissolution

iv. Precipitation over aging.