Asymmetric rolling of interstitial free steel sheets: microstructural evolution and mechanical properties

Saeed Tamimi, Jose J. Gracio, Augusto B. Lopes, Said Ahzi, Frederic Barlat

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

Asymmetric rolling (ASR) is a promising method for introducing shear deformation throughout the thickness of sheets. The induced shear deformation in ASR will result in texture evolution and which could also affect microstructural features controlling mechanical properties (such as the tensile strength). The main objective of this work consists of the investigation of the influence of ASR process on microstructure and texture evolution and their induced mechanical properties in interstitial free (IF) steel sheets. Both reverse and continuous asymmetric rolling were carried out to deform IF steel sheets. The results of optical microscopy observations showed no significant differences between the grain morphology of asymmetric and conventionally rolled (CR) samples. However, the obtained results of transmission electron microscopy (TEM) and electron backscatter diffraction (EBSD) indicated that fine and equiaxed microstructure was formed through the asymmetric rolling process. Texture evolution through plastic deformation has also been analyzed using X-ray diffraction. In addition, polycrystalline plasticity simulations were used to predict the texture evolution and the induced mechanical properties. The effect of the induced amount of pre-straining on the mechanical response of the samples through uniaxial tensile test has been studied. Results showed that at low thickness reductions (18%) the asymmetric rolled sample presents higher stress than that of the conventionally rolled sheet; while for higher thickness reductions (60%) the trend is reversed.
LanguageEnglish
Pages583–592
Number of pages10
JournalJournal of Manufacturing Processes
Volume31
Early online date29 Dec 2017
DOIs
Publication statusPublished - 30 Jan 2018

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Microstructural evolution
Steel sheet
Textures
Mechanical properties
Shear deformation
Microstructure
Electron diffraction
Optical microscopy
Plasticity
Plastic deformation
Tensile strength
Transmission electron microscopy
X ray diffraction
Steel
Texture

Keywords

  • asymmetric rolling
  • interstitial free steel
  • microstructure
  • crystallographic texture
  • mechanical properties
  • polycrystalline simulations

Cite this

Tamimi, Saeed ; Gracio, Jose J. ; Lopes, Augusto B. ; Ahzi, Said ; Barlat, Frederic. / Asymmetric rolling of interstitial free steel sheets : microstructural evolution and mechanical properties. In: Journal of Manufacturing Processes. 2018 ; Vol. 31. pp. 583–592.
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Asymmetric rolling of interstitial free steel sheets : microstructural evolution and mechanical properties. / Tamimi, Saeed; Gracio, Jose J.; Lopes, Augusto B.; Ahzi, Said; Barlat, Frederic.

In: Journal of Manufacturing Processes, Vol. 31, 30.01.2018, p. 583–592.

Research output: Contribution to journalArticle

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