Which of the following increases the yield strength of a material?

Above approximately what temperature does creep become an important failure mechanism for a metal?

In FCC metals, there are ___ slip systems.

Stress concentration is higher for sharp cracks compared to blunt cracks.

If either the applied stress or the temperature is increased during creep testing, the rupture lifetime:

Fatigue failure is responsible for ~ ____% of mechanical engineering failures.

Depending on the strength of grain boundaries, the crack may be:

Solid solutions have higher yield strength than the corresponding pure metals because:

The increase in strength due to an increase in dislocation density is known as:

Ductile fracture generally occurs in __________.