Answer
Precipitation hardening and dispersion strengthening have the similar strengthening mechanism wherein the precipitates or particles effectively hinder the dislocation motion.
The differences are:
1. For precipitation hardening, the hardening or strengthening effect is not retained at elevated temperature while it is retained for dispersion strengthening.
2. For dispersion strengthening, the improved strength is achieved by the extremely small particles of the dispersed phase that inhibits dislocation motion. For precipitation hardening, the strength is due to the formation of very small particles of precipitate phase.
Work Step by Step
Precipitation hardening and dispersion strengthening have the similar strengthening mechanism wherein the precipitates or particles effectively hinder the dislocation motion.
The differences are:
1. For precipitation hardening, the hardening or strengthening effect is not retained at elevated temperature while it is retained for dispersion strengthening.
2. For dispersion strengthening, the improved strength is achieved by the extremely small particles of the dispersed phase that inhibits dislocation motion. For precipitation hardening, the strength is due to the formation of very small particles of precipitate phase.
