Shahin Khoddam

3 Questions 35 Answers 0 Followers

Questions related from Shahin Khoddam

Is there any explanation on why a significant grain refinement exists along High Pressure Torsion sample center line where the deformation is zero ?

How the work hardening along HPT sample's center line can be explained? It is widely an accepted that the process is axi-symmetric with the center line as the axis of rotation and therefore with...

12 December 2014 449 15 View

Is there any suggestion for HPT punch material?

Carbides as the HPT's anvil material can only withstand up to 5GP in compression, what material is commonly used for ~20GP studies. I have seen diamond anvils, but their footprint is very...

12 December 2014 9,708 7 View

Friction coefficient is assumed constant during FE simulations of hot forming, can this be verified analytically?

The constant friction coefficient (shear) is the default option in most FE simulations of metal forming which involve contact. How this can be justified theoretically/analytically?

01 January 1970 8,479 11 View