If a batch of parts made from a precipitation hardenable alloy have been overaged, they can...

If a batch of parts made from a precipitation hardenable alloy have been overaged, they can be salvaged by

Expert Solution

Precipitation hardening, also called age or particle hardening, is a heat treatment process that helps make metals stronger. The process does this by producing uniformly dispersed particles within a metal's grain structure that help hinder motion and thereby strengthen it particularly if the metal is malleable.

Precipitation hardening relies on changes in solid solubility with temperature to produce fine particles of an impurity phase, which impede the movement of dislocations, or defects in a crystal's lattice. Since dislocations are often the dominant carriers of plasticity, this serves to harden the material.

The Precipitation Hardening Process as follows:

1.Solution Treatment: You heat the metal to a high temperature and treat it with a solution.

2.Quenching: Next, you quickly cool down the solution-soaked metal.

3.Aging: Finally, you heat the same metal to a medium temperature and cool it quickly again.

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Ally Wells answered 9 months ago

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