1
Seat No.: Enrolment
GUJARAT TECHNOLOGICAL UNIVERSITY
PD -SEMESTER 1 (NEW SYLLABUS) EXAMINATION- WINTER 2018
Subject Code:2911901 Date: 05-01-2019
Subject Name: MATERIAL SCIENCE METALLURGY
Time: 10:30 am to 01:00 pm Total Marks: 70
Instructions:
1. Attempt all questions.
2. Make suitable assumptions wherever necessary.
3. Figures to the right indicate full marks.
Q.1

List out the Various mechanical Properties of material and brief explain any five.
07

Differentiate between macro and micro examinations. Explain Importance of microscopic examination in metallurgy.
07
Q.2

What is Gibb's phase rule? Define system, phase and degree of freedom. Show that the degree of freedom at eutectic point in a binary phase diagram is zero.
07

What is atomic packing factor? Calculate the same for BCC and FCC structures.
07
OR

Explain the difference between mild steel and HSS.
07
Q.3

Draw iron carbon diagram and mention all major elements
07

What is solid solution? Explain types of solid solution. Also give Hume Rothery's Rules.
07
OR
Q.3

Explain eutectic, eutectoid and peritectic reaction.
07

Define Critical Cooling Rate of steel and show the same on a TTT Diagram with complete labelling.
07
Q.4

Describe effect of quenching media on properties of steel during heat treatment.
07

Explain the NDT method widely used for inspection of castings
07
OR
Q.4

Define Corrosion. Explain difference between dry type and Wet type corrosion.
07

Explain cathodic protection against corrosion.
07
Q.5

Explain Carburizing process with neat sketch.
07

Explain annealing process and justify its requirement.
07
OR
Q.5

What is powder metallurgy? State the Advantages and disadvantages of powder metallurgy.
07

Enlist a various characteristics of metal powder and explain in brief
07