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Apy-W19 - 2131904

This document is an examination paper for the Gujarat Technological University BE Semester III in Material Science and Metallurgy, dated November 30, 2019. It includes instructions for the exam, a breakdown of questions across five sections, and marks allocation for each question. Topics covered include dislocations, phase diagrams, solidification defects, and various metallurgical processes.

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8 views1 page

Apy-W19 - 2131904

This document is an examination paper for the Gujarat Technological University BE Semester III in Material Science and Metallurgy, dated November 30, 2019. It includes instructions for the exam, a breakdown of questions across five sections, and marks allocation for each question. Topics covered include dislocations, phase diagrams, solidification defects, and various metallurgical processes.

Uploaded by

bodakaran77
Copyright
© © All Rights Reserved
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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Seat No.: ________ Enrolment No.

___________

GUJARAT TECHNOLOGICAL UNIVERSITY


BE - SEMESTER– III (New) EXAMINATION – WINTER 2019
Subject Code: 2131904 Date: 30/11/2019
Subject Name: Material Science and Metallurgy
Time: 02:30 PM TO 05:00 PM Total Marks: 70
Instructions:
1. Attempt all questions.
2. Make suitable assumptions wherever necessary.
3. Figures to the right indicate full marks.

MARKS
Q.1 (a) Explain in brief Materials Science & Metallurgy. 03
(b) Explain in brief important of dislocations. 04
(c) Determine atomic packing factor for BCC crystal structure with 07
sketch.

Q.2 (a) Explain the Twin boundaries by suitable sketches. 03


(b) Explain in brief “Total Energy of Nucleation”. 04
(c) Draw & Explain Iron-Iron Carbide Diagram with all regions. 07
OR
(c) Explain the Hume Rothery’s Rules with different Factors. 07
Q.3 (a) State & Explain the Gibbs Phase Rule with suitable Example. 03
(b) What is Solidification? Explain various defects of Solidification. 04
(c) Explain in Detail Ultrasonic testing Method with sketch and 07
advantages, disadvantages & applications.
OR
Q.3 (a) Write short note on annealing process. 03
(b) What are the factors that decide the types of cast irons? 04
(c) Explain the process of specimen preparation with different steps. 07
Q.4 (a) Explain in Brief “Application of Diffusion”. 03
(b) Explain the Formation of Nuclei & Grain Structure. 04
(c) List out the difference between Austempering Process & 07
Martempering Process.
OR
Q.4 (a) State critical reactions of Iron-carbon phase Diagram. 03
(b) Write the basic steps for powder metallurgy method. 04
(c) Write a Brief short notes on Bearing Steel, Spring steel & H. S. S. 07
Q.5 (a) State & Explain Lever Rule for phase diagram 03
(b) Explain the construction of Metallurgical Microscope with sketch. 04
(c) Write short notes on Nickel And Its Alloys. 07
OR
Q.5 (a) Write short note on Gray Cast Iron. 03
(b) Explain the Induction Hardening process with diagram. 04
(c) Explain Radiography Testing method with neat sketch. Also explain 07
limitations and applications

************

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