Emm Model Exam

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SSM INSTITUTE OF ENGINEERING AND TECHNOLOGY Sindalagundu Post, Dindigul – 624 002, Tamilnadu SSM INSTITUTE OF ENGINEERING AND TECHNOLOGY Sindalagundu Post, Dindigul – 624 002, Tamilnadu Ph: 0451-2448800 Ph: 0451-2448800 Reg. No. Reg. No. Department of Mechanical Engineering Department of Mechanical Engineering MODEL EXAM MODEL EXAM ME 6403 – ENGINEERING MATERIALS AND METALLURGY ME 6403 – ENGINEERING MATERIALS AND METALLURGY Class: IV Semester/Mech Duration : 90 minutes Date: 05.05.2016 Max Marks: 50 Part-A Answer ALL questions. (10 x 2 =20 marks) 1. What are slip bands? 2. Define endurance limit in fatigue test. 3. Define ‘Creep’ of metals. 4. Enumerate the differences between annealing and normalizing. 5. What is the need for providing a tempering treatment after quench hardening of steels? 6. Define critical cooling rate. 7. What is the Spheroidizing? 8. What is an equilibrium phase diagram? 9. What are eutectoid and peritectoid reactions? Give equations. 10. What is meant by hypoeutectoid and hypereutectoid steel? PART-B (5 X 16 = 80) Marks 11. (a) (i) Explain the mechanism of slip and deformation by twinning (8) (ii) Explain ductile to brittle transition with a neat diagram. (8) (OR) (b) Explain the testing procedure of (i)Vickers hardness test (8) (ii) lzod impact test (8) 12. (a) Explain the testing procedure of (i) Rockwell hardness test (8) (ii) Charpy impact test (8) (OR) (b) (i) Draw S-N curve for ferrous and non-ferrous metals and explain how endurance strength can be determined. Also discuss the factors that affect the fatigue life. (8) (ii) Explain the testing procedure of Creep test. (8) Class: IV Semester/Mech Duration : 90 minutes Date: 05.05.2016 Max Marks: 50 Part-A Answer ALL questions. (10 x 2 =20 marks) 1. What are slip bands? 2. Define endurance limit in fatigue test. 3. Define ‘Creep’ of metals. 4. Enumerate the differences between annealing and normalizing. 5. What is the need for providing a tempering treatment after quench hardening of steels? 6. Define critical cooling rate. 7. What is the Spheroidizing? 8. What is an equilibrium phase diagram? 9. What are eutectoid and peritectoid reactions? Give equations. 10. What is meant by hypoeutectoid and hypereutectoid steel? PART-B (5 X 16 = 80) Marks 11. (a) (i) Explain the mechanism of slip and deformation by twinning (8) (ii) Explain ductile to brittle transition with a neat diagram. (8) (OR) (b) Explain the testing procedure of (i)Vickers hardness test (8) (ii) lzod impact test (8) 12. (a) Explain the testing procedure of (i) Rockwell hardness test (8) (ii) Charpy impact test (8) (OR) (b) (i) Draw S-N curve for ferrous and non-ferrous metals and explain how endurance strength can be determined. Also discuss the factors that affect the fatigue life. (8) (ii) Explain the testing procedure of Creep test. (8) 13. (a) (i) What is hardenability? Describe a test that is used for determination of hardenability of steel? (8) (ii) Explain the following process: i) Carburizing ii) Nitriding (8) (OR) (b) Draw and explain the schematic isothermal transformation diagram corresponding to 0.8% carbon steel. (16) 13. (a) (i) What is hardenability? Describe a test that is used for determination of hardenability of steel? (8) (ii) Explain the following process: i) Carburizing ii) Nitriding (8) (OR) (b) Draw and explain the schematic isothermal transformation diagram corresponding to 0.8% carbon steel. (16) 14. (a) What is annealing. Discuss the different types of annealing process. (16) OR (b) Discuss the classification, micro structure, properties and application of cast iron. (16) 14. (a) What is annealing. Discuss the different types of annealing process. (16) OR (b) Discuss the classification, micro structure, properties and application of cast iron. (16) 15. (a) (i) Describe with the aid of a diagram the substitutional and interstitial solid solution. Explain the Hume Rothery rules governing substitutional solid solution. (8) (ii) Explain the isomorphous system with a neat phase diagram. (8) (OR) (b) Draw Fe-Fe3C phase diagram and label all the phases. Discuss the structural transformation while cooling from liquid to solid. (16) 15. (a) (i) Describe with the aid of a diagram the substitutional and interstitial solid solution. Explain the Hume Rothery rules governing substitutional solid solution. (8) (ii) Explain the isomorphous system with a neat phase diagram. (8) (OR) (b) Draw Fe-Fe3C phase diagram and label all the phases. Discuss the structural transformation while cooling from liquid to solid. (16) FACULTY IN-CHARGE HOD