Jawaharlal Nehru Technological University Hyderabad 2007 M.E Manufacturing Enginnering MATERIAL TECHNOLOGY - Question Paper

ans any 5 ques.
All ques. carry equal marks
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1.a) Classify the kinds of dislocations and discuss their mechanism of formation.
b) discuss Von Moises yield criterion. Derive the necessary formula from fundamentals.
2.a) What is the effect of temperature and strain rate on plastic behaviour of medium carbon steels? discuss.
b) What do you understand by fiber and dispersion strengthening? provide example.
3.a) discuss the phenomenon of ductile and brittle transition in steel.
b) discuss the role and use of stress intensity factors in design with examples of bolts and rivets.
4.a) Distinguish ranging from low and high cycle fatigue and provide a few practical examples.
b) How is creep rupture strength is predicted using Larson-Miller method? discuss.
5.a) elaborate the different factors to be considered for materials in marine applications. provide examples.
b) discuss the Soderberg formula for evaluating endurance strength.
6.a) elaborate smart materials? elaborate their characteristics and applications?
b) elaborate the important properties of managing steels? How are they produced?
7.a) Briefly define the different kinds of coatings provided on carbide tools.
b) Comment on the different applications of Diamond as cutting tool material.
8. Write short notes on the following:
(a) Metallic glass (b) Super plasticity (c) Fracture mechanism maps.

Earning:   Approval pending.