Chapter 12, Problem 12.24P

Interpretation Introduction

Interpretation:

The reason for the precipitation-hardened alloys to be suitable only for low-temperature applications needs to be explained.

Concept Introduction:

The precipitation hardening comprises of the phenomenon of supersaturation. On maturing for extended times or at elevated temperatures, the solution becomes unbalanced as its diffusivity upsurges manifold.

The dispersion happens over actual brief distances to recompense for the upsurge in the diffusivity. The heavy force of this phenomenon is the supersaturation triggered due to variations in solubility stages when aged for an extended time or at elevated temperatures.

Subsequently, the nucleation of the precipitate stage trailed by its development occurs which is governed by dissimilar diffusion rates at various situations.