The permanent elongation of a component under a static load maintained for a period of time
Deformation Rate
rate at which the tension test is being carried out (m/s)
Ductility
the extent of plastic deformation that the material undergoes before it fractures
Fatigue failure
Cracks that grow with every stress cycle and that propagate through the material until a critical crack length is reached. (Cyclic loading)
Hardness
Resistance to permanent indentation
Residual Stress
When workpieces are subject to plastic deformation that is not uniform throughout the part
Strain Rate
function of the specimen's length
reported in s-1
Strain Rate Sensitivity
tensile strength over strain rate
Toughness
The area under the true stress-true strain curve up to fracture, or in other words, the amount of energy per unit volume that the material dissipates prior to fracture.
Ultimate Tensile Strength
The maximum engineering stress, after which point necking occurs.
Yield Stress
permanent deformation occurs when yield stress is reached. (0.2% offset)
Thermal Conductivity
the rate at which heat flows within and through a material
Passivation
When a material has the ability to form a protective layer on their surface, which, when scratched, a new oxide will form.