GTU Paper Analysis Material Science & Metallurgy (2131904) Department of Mechanical Engineering Darshan Institute of Engineering & Technology Ch. 1 Introduction Sr. No. Questions Dec - 14 May - 15 Dec - 15 May - 16 Jan – 17 May - 17 Nov -17 1. State the importance of study of “Material Science” and briefly explain engineering requirement of materials. 3 3 2. What are the engineering requirements of materials? Explain in detail. 7 7 3. Explain Structure Property and Performance relationships with a suitable example 7 3 4. Classify the engineering materials. Explain any two of them. 3 5. Differentiate a following Term: (1) Impact and Toughness (2) Ductility and Malleability 3 6. Write a material selection process for a crankshaft of Engine. 4 7. What are the various levels of structure? Explain in detail. 7
Transcript
GTU Paper Analysis
Material Science & Metallurgy (2131904) Department of Mechanical Engineering Darshan Institute of Engineering & Technology
Ch. 1 Introduction
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1. State the importance of study of “Material Science” and briefly explain engineering requirement of materials.
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2. What are the engineering requirements of materials? Explain in detail. 7 7
3. Explain Structure Property and Performance relationships with a suitable example 7 3
4. Classify the engineering materials. Explain any two of them.
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5. Differentiate a following Term: (1) Impact and Toughness (2) Ductility and Malleability
3
6. Write a material selection process for a crankshaft of Engine. 4
7. What are the various levels of structure? Explain in detail. 7
GTU Paper Analysis
Material Science & Metallurgy (2131904) Department of Mechanical Engineering Darshan Institute of Engineering & Technology
Ch. 2 Crystal geometry and Crystal Imperfections
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1. Explain and differentiate Edge dislocation and Screw dislocation with neat sketch. 7 4 7 4
2. Draw a unit cell and show the following planes (a) (113) (b) (102) (c) (111) and (d) (001).
4 3
3. Determine atomic packing factor for FCC crystal structure with sketch. 7
GTU Paper Analysis
Material Science & Metallurgy (2131904) Department of Mechanical Engineering Darshan Institute of Engineering & Technology
Ch. 3 Plastic Deformation
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1. What are slip bands and slip lines? Draw required sketches. What causes the formation of such bands on a metal surface?
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2. What is strain hardening? Explain how the effect of strain hardening can be eliminated by recrystallization?
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3. What is twinning deformation? Explain the difference between slip and twinning mechanisms
using sketch.
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4. Explain the mechanism of twining with suitable sketches. 3
Ch. 4 Solidification of metals and an alloy
GTU Paper Analysis
Material Science & Metallurgy (2131904) Department of Mechanical Engineering Darshan Institute of Engineering & Technology
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1. What is critical nucleus? In case of crystallization of metals, what is the difference between an embryo and a nucleus? What is the significance of critical radius of a solidifying particle?
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2. Explain homogenous and heterogeneous nucleation with neat sketches. 7 4
3. Explain the three basic zones formed after solidification of alloys. 7
4. What are the various methods of controlling grain structure during solidification? Explain in detail.
7 4
5. Explain in detail, the solidification of an ingot/casting giving sketches of all important zones
produced as a structure of ingot/casting.
7
6. Differentiate between Homogeneous and Heterogeneous nucleation processes. Also discuss
the conditions under which growth may be of planar and dendritic type.
7 7
7. Explain a Nucleation and growth in Solidification of metals 7
8. Write a short note on Solidification Defects with its causes and remedies. 7
GTU Paper Analysis
Material Science & Metallurgy (2131904) Department of Mechanical Engineering Darshan Institute of Engineering & Technology
Ch. 6 Allotropy of Iron
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1. Write a short note on: “Iron-iron carbide equilibrium diagram”. 7 7 7 7 7
2. With the aid of an iron- iron carbide equilibrium diagram show and explain eutectic, peretectic and eutectoid transformation. Also mention the significance of these transformations.
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3. What is plain carbon steel? Also explain all type of plain carbon steel with the composition and specific application.
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4. What do you mean by allotropy of metal? Discuss allotropy of Iron.
3 3 3 3
5. State critical reactions of Iron Carbon phase diagram.
3 3 3
6. Classifications of Plain Carbon Steels with applications and Limitations. 7
GTU Paper Analysis
Material Science & Metallurgy (2131904) Department of Mechanical Engineering Darshan Institute of Engineering & Technology
Ch. 7 Heat Treatment of Steels
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1. Explain the steps to obtain the TTT-diagram for eutectoid steel and show on it the cooling curve representing annealing and hardening process.
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2. Describe and compare Austempering and Martempering. 7 4 4
3. Describe with neat sketch how would you carry out a Jominy harden ability test on a steel sample. 7
4. Draw and label TTT diagram for eutectoid steel and show annealing and normalizing in it. Explain the critical cooling rate with the help of TTT diagram.
7 7 7
5. Define Heat treatment of metals. Explain with neat sketch TTT diagram for heat treatment of steel.
7 7 7
6. Evaluate: Annealing is never a final heat treatment process for hypereutectoid steel. Compare
and contrast the Annealing with Normalizing process.
4 7 3
7. Explain Flame hardening.
4
8. Difference between annealing and tempering. 3
9. Completely describe the Martensitic transformation.
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10. State Surface Hardening processes and explain any one 7
GTU Paper Analysis
Material Science & Metallurgy (2131904) Department of Mechanical Engineering Darshan Institute of Engineering & Technology
Ch. 8 Alloy steels
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1. What are the purpose of Alloying ? Give effects of nickel as an alloying element. 7 4
2. What is Alloying? Explain the effects of chromium as an alloying element.
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3. Discuss the effect of adding nickel and chromium to steels.
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4. What are the effect of following elements in steel:(1) Carbon (2) Chromium (3) Silicon (4) Nickel
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5. Define tool steel. Explain any five tool steels by describing their properties.
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6.
GTU Paper Analysis
Material Science & Metallurgy (2131904) Department of Mechanical Engineering Darshan Institute of Engineering & Technology
Ch. 9 Cast Iron
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1. State composition, specific properties and applications of Grey Cast Iron 7
2. Differentiate between white cast iron and grey cast iron.
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3. Classify different types of cast iron. Why silicon is added to cast iron? Explain the effects of
any four alloying elements on the properties of cast iron
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4. Draw the microstructure of white cast iron and enlist its properties.
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5. Differentiate between malleable and nodular cast iron.
4 3 3
6. Classify types of cast iron. Discuss any one. Draw its microstructure also. 4
7. Evaluate – size and distribution of graphite flakes govern the properties of a grey cast iron.
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8. Explain the graphitization process. Also enlist the factors affecting the graphitization in cast
iron.
4
GTU Paper Analysis
Material Science & Metallurgy (2131904) Department of Mechanical Engineering Darshan Institute of Engineering & Technology
Ch. 10 Non-ferrous alloys
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1. Enlist the properties of pure aluminum and mention the composition, properties and application of any one aluminum alloy.
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2. State the Qualities Required in Bearing Metals.
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3. State composition and specific applications of : Muntz metal ; German silver ; Naval brass 3
4. Explain following alloys giving their important constituents & Applications: (I) Monel (II)
Invar (III) Nichrome.
3 7
5.
GTU Paper Analysis
Material Science & Metallurgy (2131904) Department of Mechanical Engineering Darshan Institute of Engineering & Technology
Ch. 11 Powder Metallurgy
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1. What is Powder Metallurgy? Explain the process of Powder Metallurgy. 7
2. Explain the property requirement from a bearing material. Explain journal bearing material in detail.
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3. Give specific applications of powder metallurgy parts also describe merits and de-merits of powder metallurgy process.
7 3
4. Explain the requirements of metal powders used in powder metallurgy. Also explain various methods of powder production.
7 4
5. Completely describe the “Sintering Process
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6.
GTU Paper Analysis
Material Science & Metallurgy (2131904) Department of Mechanical Engineering Darshan Institute of Engineering & Technology
h. 12 Non Destructive testing
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1. What do you mean by Non-destructive testing? Differentiate destructive and non-destructive testing by stating benefits and limitations.
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2. Explain the steps of Dye Penetrant Testing with neat sketch. 7 3
3. Explain the method Ultrasonic Testing with neat sketch. And also explain its advantages and limitations.
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4. Explain the Eddy current Method of Testing with neat sketch. Also explain its benefits and
limitations.
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5. Explain the principle of Radiography testing. With its use in metal testing.
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6. For stainless steel we cannot use MPT. Why? State reason and explain MPT method in detail
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GTU Paper Analysis
Material Science & Metallurgy (2131904) Department of Mechanical Engineering Darshan Institute of Engineering & Technology
Ch. 13 Metallography
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1. What do you mean by Micro and Macro examination of engineering metallic materials? How metallic specimen is prepared for optical microscopic examination
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2. What is metallography? What useful information can be obtained from it?
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3. Explain Optical Metallurgical Microscope with neat sketch 4
