Fabrication and Processing of Engineering Materials - Precipitation Hardening

4 important questions on Fabrication and Processing of Engineering Materials - Precipitation Hardening

What is precipitation hardening?

With the precipitation hardening process extremely small, uniformly dispersed particles of a second phase are created to strengthen and harden the metal alloy.

What is precipitation hardening also named?

Age hardening.

What is solution heat treatment?

In solution heat treatment all solute atoms are dissolved to form a single-phase solid solution at temperature T0. The alloy is than rapidly quenched to T1. It than is a super saturated solution.
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What happens with precipitation heat treatment?

The supersaturated solid is heated to T2 and the precipitate begins to form as finely dispersed particles. After some time the alloy is cooled to room temperature.

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