Formation of Highly Misoriented Fragments at Hot Band Grain Boundaries During Cold Rolling of Interstitial-Free Steel

2015 ◽  
Vol 46 (7) ◽  
pp. 2956-2964 ◽  
Author(s):  
Nasima Afrin ◽  
Md. Zakaria Quadir ◽  
Michael Ferry
Keyword(s):  
Cold Rolling ◽  
Grain Boundaries ◽  
Interstitial Free ◽  
Interstitial Free Steel ◽  
Hot Band

Effect of Cold Rolling on as–ECAP Interstitial Free Steel

2010 ◽  
Vol 42 (5) ◽  
pp. 1334-1348 ◽  
Author(s):  
Sujoy S. Hazra ◽  
Azdiar A. Gazder ◽  
Andrew Carman ◽  
Elena V. Pereloma
Keyword(s):  
Cold Rolling ◽  
Interstitial Free ◽  
Interstitial Free Steel

Evolution of textures in interstitial free steel during multiple cold rolling and annealing

2005 ◽  
Vol 167 (1) ◽  
pp. 132-137 ◽  
Author(s):  
Li Jinxia ◽  
Liu Zhanying ◽  
Gao Cairu ◽  
Wang Zhaodong ◽  
Liu Xianghua ◽  
...  
Keyword(s):  
Cold Rolling ◽  
Interstitial Free ◽  
Interstitial Free Steel ◽  
Cold Rolling And Annealing

Effect of Cold-Rolling Reduction on Recrystallized Annealing Microstructure and Texture of Titanium Stabilized Interstitial Free Steel

2012 ◽  
Vol 581-582 ◽  
pp. 1010-1013
Author(s):  
Gong Ting Zhang ◽  
Zhi Wang Zheng ◽  
Min Li Wang
Keyword(s):  
Cold Rolling ◽  
Salt Bath ◽  
Rolling Reduction ◽  
Interstitial Free ◽  
Texture Measurement ◽  
Cold Rolling Reduction ◽  
Interstitial Free Steel ◽  
Cold Rolled ◽  
Evolution Of Microstructure ◽  
Annealing Microstructure

Cold rolling and salt bath annealing simulation were conducted to study the evolution of microstructure and textures of a commercially produced Titanium stabilized interstitial free steel by means of optical microscopy and X-ray texture measurement. The results show that all of the as cold-rolled specimens are completely recrystallized after annealing. As the cold-rolling reduction increases, the recystallized ferrite grains are refined, The intensities of the stable {114} and {223} components remain strong after recrystallization. The orientation intensity of the {111} and {111} also increases accordingly. As the cold-rolling reduction increases to 90%, the intensity of {111} tend to be higher than that of {111}.

An Impingement – Spheroidisation Theory for Nucleation and Grain Growth

2004 ◽  
Vol 467-470 ◽  
pp. 45-50
Author(s):  
B.J. Duggan ◽  
Y.Y. Tse ◽  
G.J. Shen
Keyword(s):  
Aspect Ratio ◽  
Grain Growth ◽  
Ostwald Ripening ◽  
Cube Texture ◽  
Interstitial Free ◽  
Interstitial Free Steel ◽  
Hot Band ◽  
Cold Rolled ◽  
Grain Growth Kinetics ◽  
Equiaxed Grains

In an investigation of nucleation of recrystallisation in an Interstitial Free steel it was found that new crystals were almost always contained within the rolled-out hot band grain envelopes and were mostly equiaxed. At a later stage they grew and had an aspect ratio of 2:1 but at the completion of recrystallisation were again equiaxed. This is explained by the notion that nucleation occurs relatively frequently in certain grains, that these nuclei have very similar orientations and are thus orientation pinned within the solute and precipitate containing envelopes of the hot band grains. Provided the misorientation is small the impinged group are capable of spheroidisation provided the driving force across the pinned boundary is sufficient to overcome the pinning, because, by definition, this pinned boundary is of high angle character. The theory, as it is presented as coalescence, relies on a form of Östwald ripening and therefore provides a possible explanation of why grain growth kinetics obeys a time exponent of between 1/2 and 1/3. A similar observation of high aspect ratio grains has been made many times in the case of cold rolled copper which forms cube texture. Again, nuclei are formed in the cube bands, but these are prevented from lengthening because of orientation pinning. However, when the length of a group of such impinged nuclei is sufficient, spheroidisation will produce equiaxed grains.

Texture Evolution of IF-Steel Sheets Processed by Equal-Channel Angular Sheet Extrusion (ECASE)

2011 ◽  
Vol 702-703 ◽  
pp. 123-126
Author(s):  
Onur Saray ◽  
Gencaga Purcek ◽  
B. Mahato ◽  
Sandip Ghosh Chowdhury
Keyword(s):  
Grain Boundaries ◽  
Tensile Properties ◽  
Equal Channel Angular Extrusion ◽  
Texture Evolution ◽  
Dislocation Cell ◽  
Interstitial Free ◽  
If Steel ◽  
Steel Sheets ◽  
Interstitial Free Steel ◽  
Sheet Extrusion

Interstitial-Free steel (IF-steel) sheets were severe plastically deformed using a continuous equal-channel angular extrusion/pressing technique called “Equal-Channel Angular Sheet Extrusion (ECASE). After processing, texture development as well as microstructural alteration and tensile properties were investigated. The microstructural investigations revealed that the processed sheets exhibited a dislocation cell and/or subgrain structures with mostly low angle grain boundaries. It was also observed that the strength of the processed sheets increased substantially after ECASE processing in the expense of ductility. It was shown that the ECASE has moderate influence on the texture of IF-steel sheets through route A. Intially there was θ partial fiber which changes to {110}θ with straining.

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