Illustrate out the term ‘Polymorphism’? Provide some of its instances.
Illustrate out the effects of the crystal imperfections in materials.
Discuss five significant mechanical tests which provide valuable information regarding metals and alloys. What are the relative benefits and drawbacks of each?
Sketch a typical ‘creep-test’ curve, showing different phases of the elongation for a long time high temperature creep test. Discuss how the information is useful to the designers.
In brief illustrate out the common types of the corrosion which are encountered on metal in different condition and indicate the nature of mechanism involved in each case.
In what ways can the mechanical properties of the aluminium alloys be enhanced? What is the effect of adding copper to the aluminium?