Shambhu Nath Ojha

3 Questions 5 Answers 0 Followers

Questions related from Shambhu Nath Ojha

Why is solubility of C in ferrite only 0.025% whereas in Austenite this is 2% ?

This is related to the configuration of atoms generating the tetrahedron and octahedron packing. The octahedron voids are more in austenite compared to that in ferrite.

20 September 2014 7,579 11 View

Can someone throw light on the purpose of addition of Niobium in HSLA steels?

Niobium raises recrystallization temperature of steels more effectively than any other metals and consequently facilitates controlled rolling leading to grain refinement of ferrite.

07 September 2014 9,918 10 View

What is thermodynamic limit of removal of hydrogen from the steel melts?

the thermodynamic limit of hydrogen removal is 1 ppm which has not been achieved by any degassing technique as yet.

04 September 2014 8,032 1 View