Comment by da_longe on 17/08/2023 at 06:38 UTC

3 upvotes, 1 direct replies (showing 1)

View submission: Guinier-Preston zones

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They increse yield and tensile strength, elongation and ductility decreases.

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Comment by [deleted] at 17/08/2023 at 07:03 UTC*

3 upvotes, 1 direct replies

Yep these precipitates are obstacles to dislocations so that will either slice them or override them (Orowan mechanism)

These two mechanisms are prevalent at different precipitate diameter, there is an ideal size where the strength increase is maximal

https://www.researchgate.net/publication/328971514/figure/fig1/AS:693421949874183@1542336084632/The-variation-tendency-of-yield-strength-increment-with-the-particle-size-1-3-in-which.png

Source : Coherent Precipitation and Strengthening in Compositionally Complex Alloys: A Review, Q.Wang et al., Entropy (2018), 20, 878.