Discontinuous yielding induced by the addition of nickel to interstitial-free steel

2014 ◽  
Vol 82 ◽  
pp. 13-16 ◽  
Author(s):  
D. Akama ◽  
N. Nakada ◽  
T. Tsuchiyama ◽  
S. Takaki ◽  
A. Hironaka
Keyword(s):  
Interstitial Free ◽  
Interstitial Free Steel ◽  
Discontinuous Yielding

Determination of $$\varvec{\eta }_{{\varvec{p}}}$$ factor for clamped SENT thin sheet specimens of an Interstitial Free steel

2021 ◽  
Vol 227 (2) ◽  
pp. 137-152
Author(s):  
S. K. Chandra ◽  
R. Sarkar ◽  
Sukalpa Choudhury ◽  
Mrinmoy Jana ◽  
P. S. De ◽  
...  
Keyword(s):  
Thin Sheet ◽  
Interstitial Free ◽  
Interstitial Free Steel ◽  
P Factor

An Assessment of Bulk and Local Stored Energy Measurements in Ultrafine Grained Interstitial Free Steel

2010 ◽  
Vol 89-91 ◽  
pp. 244-249 ◽  
Author(s):  
Sujoy S. Hazra ◽  
Azdiar A. Gazder ◽  
Elena V. Pereloma
Keyword(s):  
Profile Analysis ◽  
Energy Estimates ◽  
Internal Stresses ◽  
Line Profile Analysis ◽  
Interstitial Free ◽  
Stored Energy ◽  
Scanning Calorimetry ◽  
Angular Pressing ◽  
Ultrafine Grained ◽  
Interstitial Free Steel

The evolution of stored energy and associated thermal behaviour was investigated for an ultrafine grained Ti-IF steel severely deformed by Equal Channel Angular Pressing (ECAP) followed by cold rolling at ambient and liquid nitrogen temperatures. Bulk stored energy measurements by Differential Scanning Calorimetry (DSC) returned 350-600 whereas local stored energy estimates from microhardness, Electron Back-Scattering Diffraction (EBSD) and X-ray line profile analysis resulted in 5-140 . Higher bulk stored energy values correspond to the enthalpy release from all sources of strain in the material volume as well as Ti precipitation during annealing while the lower local stored energy range alludes only to dislocation content or internal stresses. An apparent activation energy of 500-550 suggests sluggish recrystallisation due to excess of Ti in solid solution.

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