GATE MT · 2026 · MT
Question 57: Phase transformation
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Question 57
MTNAT2 marksNeeds review
A given volume of liquid is undercooled just below the melting temperature to form a spherical solid nucleus (consider homogeneous nucleation). The Gibbs free energy of solidification (ΔGᵥ) is (− 0.5 × 10⁸) J/m³. The solid-liquid interfacial energy (γ) is isotropic and its value is 0.1 J/m².
The critical nucleus size for a stable nucleus is __________ nm (answer in integer).
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2026MT
GATE MT 2026 · Paper 1
Metallurgical Engineering · Original paper archive
- Section
- Metallurgical Engineering
- Question type
- Numerical answer (NAT)
- Marks
- 2 marks
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