An EBSD Investigation on Deformation-Induced Shear Bands in Ti-Bearing IF-Steel under Controlled Shock-Loading Conditions

J.F.C. Lins; Hugo Ricardo Zschommler Sandim; K.S. Vecchio; Dierk Raabe

doi:10.4028/www.scientific.net/MSF.495-497.393

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Texture Evolution during Cold Rolling of Low and High Carbon Steel. Measurement and Simulation
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Multiscale Characterisation of the Transformation Texture in a High Performance Steel
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Cube Texture Formed in Biaxially Rolled Low-Carbon Steel
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An EBSD Investigation on Deformation-Induced Shear Bands in Ti-Bearing IF-Steel under Controlled Shock-Loading Conditions
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Microstructure and Texture Evolution of Cold Worked 304 Stainless Steel Experimental and Modelling
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Analysis of Texture Formation and Microstructure Characteristics of Cold Rolled IF Steel Sheets
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Study on the Micro Mechanism of Recrystallization Texture Formation in Cold-Rolled IF Steel Sheet
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HomeMaterials Science ForumMaterials Science Forum Vols. 495-497An EBSD Investigation on Deformation-Induced Shear...

An EBSD Investigation on Deformation-Induced Shear Bands in Ti-Bearing IF-Steel under Controlled Shock-Loading Conditions

Abstract:

We report the results of the microstructural characterization of a Ti-bearing IF-steel deformed at high strain rates (» 6.104 s-1) in a split Hopkinson bar. The shock-loading tests were performed in hat-shaped specimens to induce the formation of adiabatic shear bands (ASB). The samples were deformed at 223 K and 298 K. High-resolution electron backscatter diffraction (EBSD) reveals the development of an ultrafine-grained structure within the ASB. A closer inspection reveals the presence of deformation twins in grains adjacent to the shear band. These twins bend towards the ASB suggesting that mechanical twinning occurs before the flow associated to shear banding. The results of microtexture have indicated the presence of a sharp <111> g-fiber texture in the ASB for both temperatures.