Grain boundaries
5 practice questionsEngineering MaterialsStep-by-step solutions
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1
According to the Hall-Petch relationship, decreasing the grain size of a metal generally:
A.Decreases its strength
B.Increases its strength
C.Has no effect on strength
D.Melts the material
2
Grain boundaries increase a metal's strength because they:
A.Let dislocations move freely
B.Impede the motion of dislocations
C.Melt the metal
D.Remove all defects
3
According to the Hall–Petch relationship, decreasing the grain size of a metal generally:
A.Decreases its strength
B.Increases its strength
C.Has no effect on strength
D.Melts the metal
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