Material Science (BOE403) - AKTU Question Paper 2025-26
B.Tech · Semester 4 · Free PDF Download
This is the official AKTU Material Science Previous Year Question Paper for B.Tech Semester 4, academic session 2025-26. Published by Dr. A.P.J. Abdul Kalam Technical University (AKTU/UPTU), Lucknow. Free PDF download — no login required.
Course:B.Tech
Semester:Semester 4
Session:2025-26
University:AKTU / UPTU
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Questions Asked in 2025-26
Material Science (BOE403) — complete question paper · 70 marks · 3 Hours
Section AAttempt all questions in brief. 02 x 7 = 14
- aState Hume-Rothery’s rules for solid solubility
- bWhat is the Phase Rule?
- cDefine Eutectoid steel and Hypoeutectoid steel
- dWhat is the significance of the T-T-T diagram?
- eDifferentiate between Rockwell and Brinell hardness tests
- fWhat are Ferroelectric materials?
- gGive two examples of Shape Memory Alloys
Section BAttempt any three of the following: 07 x 3 = 21
- aExplain binary phase diagrams with special reference to isomorphous systems, eutectic phase diagram, and peritectic phase diagram
- bDescribe the Iron-Carbon equilibrium diagram and discuss the phases, invariant reactions, and microstructure of slowly cooled steels
- cExplain the various plastic deformation mechanisms, strain hardening, and methods of increasing fatigue life
- dDiscuss the magnetic properties of materials including hysteresis, hard and soft magnetic materials, and ferrites. (SEM. IV) THEORY EXAMINATION 2025-26 MATERIAL SCIENCE
- eExplain the classification, properties, and applications of composite materials and shape memory alloys
Section CAttempt any one part of the following: 07 x 1 = 07
- aDescribe single component system, binary phase diagrams, tie-line rule, and lever rule with suitable examples
- bExplain free energy composition curves for binary systems and microstructural changes during cooling
- aDiscuss the effect of alloying elements on the Fe-C system, diffusion in solids, and Fick’s laws
- bExplain phase transformations, pearlite, bainite, and martensite transformations along with tempering of martensite
- aDescribe tensile test, creep and creep-resistant materials, and the mechanisms of creep
- bExplain fracture, Griffith criterion, fatigue failure, and methods of increasing fatigue life. (SEM. IV) THEORY EXAMINATION 2025-26 MATERIAL SCIENCE
- aDiscuss dielectric materials, polarization, Langevin-Debye equation, and ferroelectric materials
- bExplain superconducting materials and their properties along with insulating materials and dielectric breakdown
- aDescribe ceramics, types of composites, role of matrix and reinforcement, and processing of fiber reinforced plastics
- bExplain shape memory alloys, pseudoelastic effect, NiTi alloy, and applications of nanomaterials and carbon nanotubes
Question text is extracted from the official AKTU question paper PDF above. Hindi translations are omitted — every question is printed in English in the original paper. Last verified: 2026-08-23.
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