Mechanical properties Tensile test Hardness Toughness Fracture toughness Fatigue test Creep resistance Tensile test Hardness Toughness Fracture toughness Fatigue test Creep resistance
Tensile test Yield strength Tensile strength Ductility Yield strength Tensile strength Ductility
Tensile test Yield strength Tensile strength Ductility Yield strength Tensile strength Ductility
Tensile test Yield strength Tensile strength Ductility Yield strength Tensile strength Ductility
Tensile test Yield strength Tensile strength Ductility Yield strength Tensile strength Ductility
Tensile test Yield strength Tensile strength Ductility Yield strength Tensile strength Ductility
Yield (ksi) Tensile (ksi) Elongation Steels % Yield (ksi) Tensile (ksi) Elongation Steels % For metals: in general, increase strength, decrease ductility For metals: in general, increase strength, decrease ductility
Yield (ksi) Tensile (ksi) Elongation Steels % Al alloys Ni alloys Yield (ksi) Tensile (ksi) Elongation Steels % Al alloys Ni alloys
Yield (ksi) Tensile (ksi) Elongation Steels % Al alloys Ni alloys Ceramics Ceramics are ? Yield (ksi) Tensile (ksi) Elongation Steels % Al alloys Ni alloys Ceramics Ceramics are ?
Yield (ksi) Tensile (ksi) Elongation Steels % Al alloys Ni alloys Ceramics Brittle does not mean weak Yield (ksi) Tensile (ksi) Elongation Steels % Al alloys Ni alloys Ceramics Brittle does not mean weak
Yield (ksi) Tensile (ksi) Elongation Steels % Al alloys Ni alloys Ceramics Thermoplastics Thermosetting Yield (ksi) Tensile (ksi) Elongation Steels % Al alloys Ni alloys Ceramics Thermoplastics Thermosetting
Hardness Resistance to indentation Hardness Resistance to indentation
Hardness Resistance to indentation Greater hardness gives higher hardness nos. Hardness Resistance to indentation Greater hardness gives higher hardness nos.
Example - quenched plain carbon steels
Correlation betwn strength & hardness Harder means stronger for metals & alloys Correlation betwn strength & hardness Harder means stronger for metals & alloys
Toughness Resistance to being clobbered Toughness Resistance to being clobbered
Toughness Resistance to being clobbered Impact test measures energy absorbed upon fracture measure of toughness Toughness Resistance to being clobbered Impact test measures energy absorbed upon fracture measure of toughness
Toughness Resistance to being clobbered Toughness Resistance to being clobbered
Impact test measure impact energy at different temperatures Impact test measure impact energy at different temperatures
Impact test measure impact energy at different temperatures Impact test measure impact energy at different temperatures