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

3 upvotes, 1 direct replies (showing 1)

View submission: Guinier-Preston zones

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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.

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Comment by da_longe at 17/08/2023 at 08:27 UTC

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I know, i worked on Al-Cu and Al-Si-Mg hardenable alloys :)