What do you understand by the term stainless steels? Provide typical composition, applications and properties, of all kinds of stainless steels. Why these steels are stainless? Discuss.
What do you understand by the term thermomechemical processing? Illustrate in detail. What are the advantages? Which super alloys are subjected to the thermomechamical treatment? Illustrate in detail.
Illustrate the various techniques accessible for degassing the dissolved gases from molten super alloys.
Illustrate in detail the typical heat treatment processes adopted to wrought super alloys so as to alleviate the structure sufficiently to generate optimized long time rupture properties.
What are the advantages and drawbacks of visual test technique? Illustrate.