Download GTU (Gujarat Technological University) BE/BTech (Bachelor of Engineering / Bachelor of Technology) 2019 Summer 8th Sem New 2182115 Alloy Design Previous Question Paper
Seat No.: ________ Enrolment No.___________
GUJARAT TECHNOLOGICAL UNIVERSITY
BE - SEMESTER ?VIII(NEW) EXAMINATION ? SUMMER 2019
Subject Code: 2182115 Date:13/05/2019
Subject Name: Alloy Design
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.
MARKS
Q.1 (a) Draw flow chart of interrelationship among design, materials and
processing.
03
(b) What is degree of freedom? Write the formula for degree of
freedom for unary and binary phase diagram along with the
justification.
04
(c) Explain the different steps involved in the engineering design
process?
07
Q.2 (a) Explain briefly the effect of size, shape and distribution of second
phase on mechanical properties of alloys
03
(b) Discuss the various advantages offered by Dual Phase Steel
compared to Plain Carbon steel.
04
(c) Stent manufacturer has contacted you to design a bio-degradable
metallic alloy. Give your recommendations based on properties
required at the application level and justify the choice of materials.
07
OR
(c) Stent manufacturer has contacted you to design a non-degradable
metallic alloy. Give your recommendations based on properties
required at the application level and justify the choice of materials.
07
Q.3 (a) What are the driving force behind Recovery, Recrystallization and
Grain Growth?
03
(b) Draw a labeled diagram of cooling curves of:
1) Eutectic alloy and
2) Hyper eutectic alloy
04
(c) What is precipitation hardening? Explain different stages and
mechanisms of precipitation hardening by coherent particles using
Al ? 2wt%Cu alloy.
07
OR
Q.3 (a) What are the prerequisites for an alloy to be age-hardenable? 03
(b) Draw a labeled diagram of cooling curves of:
1) Pure metal and
2) Hypo eutectic alloy
04
(c) Explain Recovery, Recrystallization and Grain Growth.
Schematically show the effect of this phenomenon on the
mechanical properties of a material.
07
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Seat No.: ________ Enrolment No.___________
GUJARAT TECHNOLOGICAL UNIVERSITY
BE - SEMESTER ?VIII(NEW) EXAMINATION ? SUMMER 2019
Subject Code: 2182115 Date:13/05/2019
Subject Name: Alloy Design
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.
MARKS
Q.1 (a) Draw flow chart of interrelationship among design, materials and
processing.
03
(b) What is degree of freedom? Write the formula for degree of
freedom for unary and binary phase diagram along with the
justification.
04
(c) Explain the different steps involved in the engineering design
process?
07
Q.2 (a) Explain briefly the effect of size, shape and distribution of second
phase on mechanical properties of alloys
03
(b) Discuss the various advantages offered by Dual Phase Steel
compared to Plain Carbon steel.
04
(c) Stent manufacturer has contacted you to design a bio-degradable
metallic alloy. Give your recommendations based on properties
required at the application level and justify the choice of materials.
07
OR
(c) Stent manufacturer has contacted you to design a non-degradable
metallic alloy. Give your recommendations based on properties
required at the application level and justify the choice of materials.
07
Q.3 (a) What are the driving force behind Recovery, Recrystallization and
Grain Growth?
03
(b) Draw a labeled diagram of cooling curves of:
1) Eutectic alloy and
2) Hyper eutectic alloy
04
(c) What is precipitation hardening? Explain different stages and
mechanisms of precipitation hardening by coherent particles using
Al ? 2wt%Cu alloy.
07
OR
Q.3 (a) What are the prerequisites for an alloy to be age-hardenable? 03
(b) Draw a labeled diagram of cooling curves of:
1) Pure metal and
2) Hypo eutectic alloy
04
(c) Explain Recovery, Recrystallization and Grain Growth.
Schematically show the effect of this phenomenon on the
mechanical properties of a material.
07
2
Q.4 (a) What is Fatigue? Show S-N diagram for various ferrous & non
ferrous alloys.
03
(b) Explain constitutional supercooling in an alloy. 04
(c) What do you understand by creep failure? Explain the mechanisms
involved in creep failure of a material?
07
OR
Q.4 (a) With help of flow chart give detailed classification of phase
transformations.
03
(b) Draw labeled diagram of:
1) Stress Strain Diagram and
2) Creep Curve
04
(c) What are the ways to reduce wear of material? What are the
fundamental criteria for selection of the material for wear
applications?
07
Q.5 (a) Suggest the materials for high dynamic loading conditions. 03
(b) Explain the strengthening mechanism behind the high temperature
strength of Nickel based Superalloys.
04
(c) List the computer-based methods used for designing of alloys.
Explain any one in detail.
07
OR
Q.5 (a) State the difference between Alloy & Composites. 03
(b) Which are the principal alloying elements of group-M HSS? List
the effects of these elements on properties of group-M HSS.
04
(c) Explain the advantages of designing a component from
lightweight and high strength aluminium based alloy made using
powder metallurgical route? List probable applications for the
same.
07
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This post was last modified on 20 February 2020