age hardening


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Related to age hardening: Precipitation hardening, Surface hardening

age hardening

n
(Metallurgy) the hardening of metals by spontaneous structural changes over a period of time. See also precipitation hardening
References in periodicals archive ?
It is reported that there are very slight dimensional changes (of the order of 0.02%) in these steels [6] after martensite age hardening (maraging) heat treatments.
Petersen, "Asphalt aging: a dual oxidation mechanism and its inter-relationships with asphalt composition and oxidative age hardening," Transportation Research Record, vol.
Considering this process chain, the usage of new AW-7xxx sheet as a structural material depends (in addition to the formability) on the age hardening response of the alloy during the forming process chain.
Among specific topics are multiscale modeling predictions of age hardening curves in aluminum-copper alloys, the kinetic Monte Carlo modeling of shear-coupled motion of grain boundaries, atomistically informed crystal plasticity model for body-centered cubic iron, molecular dynamics study on low temperature brittleness in tungsten single crystals, and peptide-zinc interaction.
Age hardening greatly increases strength in cast alloys but sharply reduces work hardening, toughness and abrasive wear resistance.