What is metal fatigue?
What is metal fatigue?
user
Metal fatigue is the gradual weakening of a metal object or piece of metal as a result of physical stress over time.
assistant
Can heat causes metal fatigue?
user
Yes, heat can cause metal fatigue.
assistant
Right. Do you know why heat can cause metal fatigue?
user
Yes.  Because there is a relationship between temperature, stress, and elasticity.  When a metal object is heated, the object is put under stress and that stress can cause the metal to get damaged or weaken over time.
assistant
Yes, it'
user