On {h,1,1}<1/h,1,2>, the Recrystallisation Texture of Heavily Cold Rolled BCC Steel

Hotaka Homma; Shuichi Nakamura; Naoki Yoshinaga

doi:10.4028/www.scientific.net/MSF.467-470.269

Paper Titles

Thermomechanical Behavior of Rapidly Solidified Fe-25Cr-20Ni
p.247

Static Recrystallization of Ti-IF Steel after Warm Deformation
p.251

Recrystallisation Texture of Cold Rolled and Annealed IF Steel Produced from Ferritic Rolled Hot Strip
p.257

Difference in Recrystallization Behavior between Martensite and Deformed Ferrite
p.263

On {h,1,1}<1/h,1,2>, the Recrystallisation Texture of Heavily Cold Rolled BCC Steel
p.269

Effect of the Strain Reversal on the Microstructure and the Recrystallization Kinetics of the Austenite
p.275

Hot Strain Diagrams, Strengthening and Recrystallization of Nitrogen Alloyed Steels
p.281

Grain Refinement and Texture Change in Interstitial Free Steels after Severe Rolling and Ultra-Short Annealing
p.287

Characteristics of the Static Recrystallization Kinetics of an Intercritically Deformed C-Mn Steel
p.293

HomeMaterials Science ForumMaterials Science Forum Vols. 467-470On {h,1,1}<1/h,1,2>, the Recrystallisation Texture...

On {h,1,1}<1/h,1,2>, the Recrystallisation Texture of Heavily Cold Rolled BCC Steel

Abstract:

Heavily cold rolled BCC steel has been indicated to generate {411}<148> recrystallisation texture and its family orientations which might be represented as {h,1,1}<1/h,1,2>. As a-fibre structure, or RD//<011> texture is significantly developed during the cold rolling, it is naturally speculated to be the recrystallisation site of {h,1,1}<1/h,1,2> fibre. The present paper prompts to demonstrate the recrystallisation procedure by utilising EBSP-OIM analysis. The first demonstration was carried out with OIM analysis on partially recrystallised cold rolled steel. At the stage of 50% recrystallisation, only ND//<111> texture has appeared for the recrystallised area. {100}<011> - {211}<011> a-fibre remains as deformed structure, and several {h,1,1}<1/h,1,2> grains could be found at the grain boundaries. Therefore, a bi-crystal of {100}<011> was employed to simulate the irregular deformation at the grain boundary. After cold rolling, a warp toward the grain boundary was observed. Although the interior of the {100}<011> single crystal was hardly recrystallised, sharp {411}<148> texture was created along the grain boundary. In order to confirm the phenomenon, another experiment was carried out that a cold rolled {100}<011> single crystal was bent along the rolling direction and annealed. Very sharp {411}<148> recrystallisation texture was formed again at the bent perimeter. These experimental results lead us to conclude that the irregular strain was sufficiently piled at the grain boundary after the heavy deformation and generates {h,1,1}<1/h,1,2> texture. On {100} pole figures, the recrystallisation textures were equivalently scattered around three <100> poles, therefore the rotation relationship around <111> axes with the original orientation was suggested.