Question:medium

Grain refinement improves strength mainly by

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Every strengthening mechanism in physical metallurgy (including strain hardening, solid solution strengthening, precipitation hardening, and grain refinement) relies on the same core principle: introducing microstructural obstacles to hinder dislocation motion.

Updated On: Jun 25, 2026

Increasing slip length
Increasing dislocation mobility
Hindering dislocation motion
Reducing elastic modulus

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The Correct Option is C

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