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According to ________ five independent systems are required to maintain the reliability of grain boundaries.

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According to ________ five independent systems are required to maintain the reliability of grain boundaries.

(a) Hal-Petch principle

(b) Mohr-Coulomb theory

(c) Tresca criterion

(d) Von Mises criterion

This question was addressed to me in an interview for internship.

I need to ask this question from Plastic Deformation topic in division Plastic Deformation and Creep in Crystalline Materials, Elastic, Anelastic and Viscoelastic Behaviour of Engineering Material & Metallurgy

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Correct answer is (d) Von Mises criterion

The best explanation: In polycrystalline materials, a slip must be accommodated by a slip in adjacent crystals so that the grain boundaries remain continuous. According to the Von Mises criterion, at least five independent slip systems are required to maintain the integrity of grain boundaries during plastic deformation.

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