2.Draw the microstructure eutectoid steel and white cast iron.
3.Write the importance of spheroidising annealing.
4.Define hardenability and case depth.
5.Differentiate between Izod and Charpy impact testing.
6.Draw the S-N curve for mild steel and aluminium.
7.what is the effect of alloying Nickel and Chromium in steels?
8.Differentiate between precipitation hardening and dispersion
9.Define degree of polymerisation.
10.what are PEEK and PMMA?
diagram and draw and label all the phases.(8)
(ii) Discuss the different classifications of steels and cast irons.(8)
(ii) Explain the Hume Rothery rules governing substitional solId solution(4)
(iii) Write short notes on about SG Cast iron. (4)
12. (a) what is annealing? Discuss in detail on different types of annealing and compare with normalizing. (16)
(ii) what is carburizing? Discuss nitriding process and its importance for
industrial applications. (4)
(iii) Describe the Jominy End Test in details for determination of hardenability. (4)
13. (a) (i) Draw the engineering stress – strain curve for mild steel, aluminium and cast iron. Discuss the tensile test and different mechanical properties obtained in tensile testing.(8)
(ii) Write a short note on compression test. (8)
(b) (i) List the various types of hardness testing . Write a short note on Brinell and Vickers hardness and their significance. (8)
(ii) What do you mean by slip and twinning? (8)
14. (a) (i) Describe the stainless steels with respect to composition, properties and applications. (8)
(ii) What is maraging steels? Discuss the strengthening method of maraging steels. (8)
(b) (i) Discuss different types of copper alloys and their properties and applications. (8)
(ii) Write short notes on bearing alloys. (8)
15. (a)write the properties and applications of the following poymers and discuss anyone fabrication methods of polumers. (16)
(I )PMMA, (II)PP, (III)ABS amd
(b)(i)List the important engineering ceramic materials and discuss its general applications of ceramic materials in various engineering fields. (8)
(ii)What are the advantages and disadvantages of ceramics? (8)
Anna University Question papers Engineering Materials and metallurgy May / June 2013 For 4th Semester Automobile Engineering