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EMEO63

Following Paper ID and RollNo. to be filled in yourAnswer Book

B.Tech.

(sEM. VrII) THEORY EXAMTNATTON 20tt-12 ADVANCED MATERIALS TECHNOLOGY Time

:

Tbtal Marlcs

3 Hours

Note

:

100

:- (1) Attempt all questions. (2) All questions carry equal marks.

l.

Attempt any four of the following

:-

(4x5=20)

(a) What is nodular cast iron ? Why are its mechanical properties better than grey cast iron

(b) What are stainless

?

steels ? Classify the different types

of stainless steel and write the composition and properties

of any one stainless

(c)

steel.

Describe the composition, properties and uses of H.S.L.A.S. (High strength low alloy steel).

(d)

Write the typical composition of T-series and M-series

high speed steel. Now a days these high speed steels are coated with certain ceramic materials. How do these

coatings improve its properties

(e)

Discuss how the properties

EMEO63/PUR4O3O3

?

of steel gets affected by [Turn Over

increasing the amount of carbon. What is the effect

of

increasing the amount of silicon in plain carbon steel

(0 2.

?

Describe a few high temperature resisting steels.

:-

Attempt any four of the following

(4x5=20)

(a) What is hardenability of steel ? On what factors does the hardenability of steel depends

?

(b) Describe how normalizing heat treatment of 0.3% carbon steel be carried out and what

will its properties be

after this normalizing heat treatment

(c)

?

Explain how cyniding of steel components is carried out. What care needs to be taken white carrying out

this process

?

(d) Describe the heat treatment that is usually carried out after a component has been carburized.

(e) What are the advantages of induction

hardening

overflame hardening ? Discuss when these surface hardening treatment are needed to be performed.

(0 3.

Explain what is process annealing. When is this heat treatment usually applied 'l

Attempt any four of the following

:-

(a) Discuss

stages

in brief the different

(4xS:20)

of precipitation

hardening.

(b)

Describe the composition properties and uses of different

types

of

EMEO63/PUR4O303

brasses.

(c)

Classify the different types of aluminurn alloys. How are wrought alloys different from cast alloy ?

(d)

What are dispersion strengthened composite materials ? Why are its mechanical properties better than those of

alloys

(e)

?

Name some methods by which refractory materials can be coated on alloys. How do these coating affect their

properties and what are the application areas

coating

(0 4.

such

?

What are smart materials ? Discuss the different types of smart materials.

Attempt any two of the following

(a)

of

:-

(2x10=20)

What are biomaterials ? Classify the different types of biomaterials used in medicine and dentistry. Describe the different biomaterials that can be used for orthopedic

applications.

(b)

(c)

Describe the various mechanical properties that are needed in biomaterials used for different applications. How are these properties tested ? Describe the various types of steels, polymers, ceramics

and composites that are used as biomaterials. Also mention where these biomaterials find their applications. 5.

Attempt any two of the following

(a)

:-

(2x10=20)

What are nuclear materials ? Classifu the different types of nuclear materials. What is the difference between

fissile and fertile materials ? Give examples. EMEO63/PUR4O3O3

lTurn Over

(b)

Why are breeder reactors ? What are they used for What is the use of heavy water in nuclear reactors Why is it suitable for that application

.(c)

? ?

?

What material is used for the construction of heat exchanger used in nuclear power plant ? What are the radiation proof materials ? Give examples of such materials and where these materials find their application

EMEO63/PUR4O3O3

?

6350

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