GATE Physical Metallurgy: Nucleation solidification and transformations – Previous Year Questions
7 GATE previous year questions on Nucleation solidification and transformations (Physical Metallurgy, Metallurgical Engineering) with answers and explanations, from every paper.
- GATE 2021 MT Q29 – For homogeneous spherical-solid nucleation in liquid at fixed undercooling, a 20% rise in nucleus surface energy causes a % increase in critical…
- GATE 2021 MT Q60 – An A–B alloy with 5 wt.% B solidifies without convection, with the shown hypothetical eutectic phase diagram. Under steady state, the critical…
- GATE 2022 MT Q55 – During solidification of a pure metal at undercooling 10 K, the critical-nucleus radius is 10-9 m (one decimal place). Solid–liquid interface energy…
- GATE 2024 MT Q22 – Which schematic shows the rate of solid nucleation from a pure liquid metal versus undercooling T=T m-T, where T m is freezing temperature and T is…
- GATE 2024 MT Q33 – A solid embryo contacts a perfectly flat mould wall as shown. Its wetting angle is degrees (one decimal place). Surface tensions are: liquid–mould…
- GATE 2024 MT Q41 – The constitutional undercooling condition for a hypothetical binary alloy of A with solute B during solidification is shown in the figure along with…
- GATE 2026 MT Q57 – A volume of liquid is undercooled just below its melting temperature to form a spherical solid nucleus by homogeneous nucleation. The Gibbs free…