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Physical Metallurgy MCQ Questions and Answers | Metallurgical Engineering

Enhance your knowledge of Physical Metallurgy with this comprehensive collection of MCQ questions and answers. These MCQ questions and answers in Physical Metallurgy are specifically designed for students of Metallurgical Engineering who are preparing for the GATE Exam. Strengthen your preparation and excel in your studies with this valuable resource. Page-2 section-1

Each section contains 100 MCQs on Physical Metallurgy .
11
Malleabilisation heat treatment is performed on
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Answer: Option C
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12
What are the crystal structure of Cu, AI, Si, Zn and Ge?
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Answer: Option A
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13
Match the basic strengthening mechanisms in the following materials.
Group-I Group-II
P. 60 : 40 brass is stronger than 70 : 30 brass. 1. Case hardening
Q. An automobile gear made from 0.6% C steel and quenched in water from a temperature of 850°C. 2. Strain hardening
R. Tungsten filament drawn at a temperature of 400°C. 3. Martensitic strengthening
S. A ball bearing heated in furnace in ammonia atmosphere. 4. Second phase strengthening
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Answer: Option A
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14
In a dilute solid solution of nickel and carbon in y-iron.
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Answer: Option D
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15
Match the heat treatment for an eutectoid steel shown in the TTT diagram below (as P, Q, R and S) with the resulting microstructure listed below:
1. Fine pearlite
2. martensite
3. Bainite
4. Coarse pearlite
Physical Metallurgy mcq question image
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Answer: Option B
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16
Match the phenomena listed in Group I with the possible mechanisms in Group II.
Group I Group II
P. Fatigue 1. Grain boundary sliding
Q. Creep 2. Slip band extrusion and intrusion
R. Strain hardening 3. Cottrell atmosphere
S. Yield point phenomenon 4. Dislocation interaction
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Answer: Option C
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17
An Al 4.5 mass% Cu alloy solutionising at 500°C, quenched to room temperature and aged at 200°C for 2 hrs is found to exhibit an increase in hardness. Theprimary mechanism contributing to increased hardness is
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Answer: Option C
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18
The low angle grain boundary occurs when the orientation difference between the adjacent grains is of the order of
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Answer: Option C
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19
An Fe - 3 wt % C - 1 wt % Si alloy is cooled very slowly from the liquid state to a temperature of 1023 K. Thereafter, it is cooled in air. The microstructure at room temperature will consist of
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Answer: Option B
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20
An annealed plain carbon steel, showing fully pearlitic microstructure, has a carbon content of . . . . . . . . wt%.
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Answer: Option C
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