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Mechanical Properties of Metals

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Presentation on theme: "Mechanical Properties of Metals"— Presentation transcript:

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

2 Strength: a standard tensile specimen

3 Strength: testing machines for tension and bending

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

5 Strength: geometry of the deformed specimen

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

7 Hardness - Rockwell tester - Brinell tester - Vickers tester

8 Hardness: microhardness indentation of two grains

9 Toughness: impact pendulum-type testing machine

10 Toughness: impact test and specimens

11 Fatigue: fracture surface

12 Fatigue: reversed stress cycle

13 Ductile-to-brittle transition


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