Mechanical Properties of Metals

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Mechanical Properties of Metals
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Presentation transcript:

Mechanical Properties of Metals Strength Ductility Hardness Stiffness Toughness Behavior in service: Fatigue Ductile-to-brittle transition

Strength: a standard tensile specimen

Strength: testing machines for tension and bending

Strength: a stress-strain diagram (I field – elastic deformation, II field – plastic deformation, III field – necking)

Strength: geometry of the deformed specimen

Strength: a stress-strain diagram of ductile and brittle metal

Hardness - Rockwell tester - Brinell tester - Vickers tester

Hardness: microhardness indentation of two grains

Toughness: impact pendulum-type testing machine

Toughness: impact test and specimens

Fatigue: fracture surface

Fatigue: reversed stress cycle

Ductile-to-brittle transition