Texture evolution of cold rolled and annealed Fe-24Mn-3Al-2Si-1Ni-0.06C TWIP steel

被引:109
作者
Saleh, Ahmed A. [1 ]
Pereloma, Elena V. [1 ]
Gazder, Azdiar A. [1 ]
机构
[1] Univ Wollongong, Sch Mech Mat & Mechatron Engn, Wollongong, NSW 2522, Australia
来源
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2011年 / 528卷 / 13-14期
关键词
TWIP; Recrystallization; Electron Back-Scattering Diffraction (EBSD); Texture; Hall-Petch; AUSTENITIC STAINLESS-STEEL; POLYCRYSTALLINE FCC METALS; STACKING-FAULT ENERGY; ROLLING TEXTURES; RECRYSTALLIZATION TEXTURES; MICROSTRUCTURE EVOLUTION; DEFORMATION TEXTURE; TRIP/TWIP STEELS; SHEAR BANDS; BRASS;
D O I
10.1016/j.msea.2011.02.055
中图分类号
TB3 [工程材料学];
学科分类号
0805 ; 080502 ;
摘要
The microstructure and texture evolution of 42% cold-rolled Fe-24Mn-3Al-2Si-1Ni-0.06C TWinning Induced Plasticity (TWIP) steel is investigated during isochronal annealing at temperatures between 600 and 850 degrees C. In the cold rolled condition, bulk texture returned the distinctive alpha-fibre for low stacking fault energy materials, with higher intensities for Goss ({1 1 2}< 0 1 1 >) compared to Brass ({1 11}< 11 2 >). A comparison between bulk and micro-textures, showed a significant slip contribution to the development of the Brass orientation, along with a possible role for micro-shear banding. Annealing twins contribute to recrystallisation from the early stages of nucleation and participate in generating new orientations thereafter. Unlike texture studies on other austenitic steels, the F ({1 1 1}< 0 1 1 >) and Rotated Copper ({1 1 2}< 0 1 1 >) orientations were detected in this work. The former is due to a more homogeneous distribution of nucleation sites, while the latter can be ascribed to second order twinning and the preferred-growth 30 degrees < 1 1 1 > relation with the Brass rolling component. Based on the microstructural parameters from Electron Back-Scattering Diffraction (EBSD), the modified Hall-Petch (H-P) relation was successfully applied to the 0.2% proof stress. (C) 2011 Elsevier B.V. All rights reserved.
引用
收藏
页码:4537 / 4549
页数:13
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