High Strength and High Ductility of Ultrafine-Grained, Interstitial-Free Steel Produced by ECAE and Annealing

2012 ◽  
Vol 43 (6) ◽  
pp. 1884-1894 ◽  
Author(s):  
Gencaga Purcek ◽  
Onur Saray ◽  
Ibrahim Karaman ◽  
Hans J. Maier
Keyword(s):  
High Strength ◽  
Interstitial Free ◽  
High Ductility ◽  
Ultrafine Grained ◽  
Interstitial Free Steel

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.

Tailoring stacking fault energy for high ductility and high strength in ultrafine grained Cu and its alloy

2006 ◽  
Vol 89 (12) ◽  
pp. 121906 ◽  
Author(s):  
Y. H. Zhao ◽  
Y. T. Zhu ◽  
X. Z. Liao ◽  
Z. Horita ◽  
T. G. Langdon
Keyword(s):  
High Strength ◽  
Stacking Fault ◽  
Stacking Fault Energy ◽  
High Ductility ◽  
Ultrafine Grained

Hot shortness behavior of a copper-alloyed high strength interstitial free steel

2013 ◽  
Vol 588 ◽  
pp. 288-298 ◽  
Author(s):  
R. Rana ◽  
W. Bleck ◽  
S.B. Singh ◽  
O.N. Mohanty
Keyword(s):  
High Strength ◽  
Interstitial Free ◽  
Interstitial Free Steel ◽  
Hot Shortness

Impact Toughness of Ultrafine-Grained Interstitial-Free Steel

2012 ◽  
Vol 43 (11) ◽  
pp. 4320-4330 ◽  
Author(s):  
Onur Saray ◽  
Gencaga Purcek ◽  
Ibrahim Karaman ◽  
Hans J. Maier
Keyword(s):  
Impact Toughness ◽  
Interstitial Free ◽  
Ultrafine Grained ◽  
Interstitial Free Steel
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