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Me 304 (Material Science)

This document is an exam for a Materials Science course consisting of 5 units. It provides 10 questions, with students to choose one question from each unit. The questions cover a range of topics in materials science including the periodic table, phase diagrams, solidification of metals, heat treatment processes, and nanomaterials. Students are instructed to answer all parts of the chosen questions in one place and figures in the right margin indicate the number of marks allotted for each question.

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Sri Kay
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165 views2 pages

Me 304 (Material Science)

This document is an exam for a Materials Science course consisting of 5 units. It provides 10 questions, with students to choose one question from each unit. The questions cover a range of topics in materials science including the periodic table, phase diagrams, solidification of metals, heat treatment processes, and nanomaterials. Students are instructed to answer all parts of the chosen questions in one place and figures in the right margin indicate the number of marks allotted for each question.

Uploaded by

Sri Kay
Copyright
© Attribution Non-Commercial (BY-NC)
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as PDF, TXT or read online on Scribd
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[Nov-12] [EURME-304]

B.Tech. Degree Examination Mechanical Engineering


III SEMESTER MATERIALS SCIENCE
(Effective from the admitted batch 200809)

Time: 3 Hours

Max.Marks: 60

---------------------------------------------------------------------------------------------------Instructions: Each Unit carries 12 marks. Answer all units choosing one question from each unit. All parts of the unit must be answered in one place only. Figures in the right hand margin indicate marks allotted. ---------------------------------------------------------------------------------------------------

UNIT-I 1. a) Explain the arrangement of the elements in the periodic table b) Is there any difference in that kinetic energy of the atoms in the liquid and the gas at the boiling point? Explain 6 OR 2. a) Describe a method of obtaining uniform grain size in a casting which has a thick and thin section 6 b) An X-ray diffraction analysis of a crystal is made with X-ray having a wave length of 0.58A. A reflection is observed at an angle of 0.450 . What is the interplanar spacing? 6 UNIT-II 3. a) Sketch a time-temperature cooling curve for the solidification of a small crucible of liquid antimony. Discuss the salient features 6 b) What is the necessity of alloying? Two metals are completely soluble in the liquid state and completely in soluble in the solid state. Discuss 6 OR 4. a) Draw a simplified aluminium silicon phase diagram. Discuss in detail 6 b) Sketch a silver-platinum alloy system showing the formation of a terminal solid solution by a peritectic reaction. Comment on it 6 6

UNIT-III 5. a) Explain Gibbs phase rule and liver rule in detail b) Draw copper-nickel equilibrium diagram and explain OR 6. Sketch an iron-iron carbide equilibrium diagram with common names and discuss the features of it UNIT-IV 7. a) What factors influence the critical cooling rate? Explain b) Explain two ways in which the hardness traverse curve of a given steel may show a straight horizontal line OR 8. a) Describe how an I-T diagram is determined experimentally b) What are the principal advantages of Austemperingcompared with the conventional quench and temper method? 6 UNIT-V 9. a) Sketch a block-diagram of a glass fibre production process and explain it 6 b) Explain the fabrication of metal matrix composites by means of sketch 6 OR 10. a) Define Nano material and discuss its properties 6 b) Name some of the techniques used for producing nanomaterials. Explain anyone in detail 6
[8/III S/112]

6 6

12

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