Seat No.: Enrolment No.
GUJARAT TECHNOLOGICAL UNIVERSITY
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BE - SEMESTER-III (New) EXAMINATION — WINTER 2018Subject Code: 2132004 Date: 05/12/2018
Subject Name: Principles of Materials Science And Physical Metallurgy
Time: 10:30 AM TO 01:30 PM Total Marks: 70
Instructions:
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- Attempt all questions.
- Make suitable assumptions wherever necessary.
- Figures to the right indicate full marks.
Q.1 (a) What is the signification of study of Metallurgy? [03]
(b) Define the following properties of engineering materials. (Any four) [04]
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(1) stress (2) strength (3) ductility (4) fatigue (5) creep (6) stiffness(c) What is micro examination of metal? What are the various steps required for such an examination? [07]
Q.2 (a) State difference between a space lattice and a crystal structure. [03]
(b) Explain with neat sketches the arrangements of atoms in B.C.C and F.C.C structure. [04]
(c) Explain Edge dislocation with help of neat sketch. [07]
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OR
(c) What is importance of structure — property- performance relationship? [07]
Q.3 (a) Distinguish between Ductile and Brittle fracture with aid of appropriate sketches. [03]
(b) What is Modulus of elasticity? Draw stress- strain diagram for mid steel. [04]
(c) Explain Gibb’s phase rule. [07]
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OR
Q.3 (a) Define the following terms (Any three) [03]
(1) Degree of freedom (2) Unary system and Binary system (3) Coring (4) Phase diagram
(b) Explain with the help of neat sketch the Allotropy of iron. [04]
(c) Explain TTT diagram with fully labeling. [07]
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Q.4 (a) Explain Eutectic Reaction. [03]
(b) What is the Heat treatment of steel? What is its objective? [04]
(c) Write the procedure for conducting Jominey Hardenability Test. [07]
OR
Q.4 (a) Define Hardenability of steel. State factors that affect the Hardenability. [03]
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(b) Write down on comparison of destructive and non destructive test. [04]
(c) Explain Induction hardening process also give application. [07]
Q.5 (a) What is the application of Ultrasonic test? [03]
(b) Explain any one method of powder production in powder metallurgy. [04]
(c) Explain in brief sintering process [07]
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OR
Q.5 (a) Differentiate between Carburizing and Nitriding. [03]
(b) Write the advantages and limitation MPT technique. [04]
(c) Draw and Explain iron — iron carbide diagram. [07]
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