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Title: Microstructural evolution and mechanical properties on an ARB processed IF steel studied by X-ray diffraction and EBSD

Abstract

Accumulative Roll Bonding (ARB) is one of the so-called severe plastic deformation (SPD) processes, allowing the production of metals and alloys with ultrafine (micro-nano) structures. Materials with ultrafine grains present attractive properties like the simultaneous increase in strength and ductility. Our interest in these materials is focused on their microstructural evolution during ARB processing, eventually responsible for the enhancement of those mechanical properties. In the current work we follow the evolution of the microstructure in an interstitial-free (IF) steel deformed by ARB after consecutive processing cycles, by means of Electron BackScatter Diffraction (EBSD) and X-ray diffraction (XRD). Particularly, we present results related to texture, grain (GS) and domain sizes, grain boundary character, density of Geometrically Necessary Dislocations (GND), Grain Orientation Spread (GOS), lattice parameters, microstrain, dislocation density and their spatial arrangement. After 5 ARB cycles the system shows a microstructure constituted mainly by submicrometric grains with high angle boundaries and low presence of dislocations inside the grains. - Highlights: •The evolution of microstructure is followed simultaneously by using GAM, GOS and GND (EBSD) and XRD. •LAGBs and subgrains disappear after few cycles SSDs and HAGBs persist at the end. •Dynamic recrystallization counterbalances dislocation arrays and diminishes hardening rate. •Grain sizemore » stabilization is revealed as a mechanism for increasing ductility after few ARB cycles.« less

Authors:
 [1];  [2];
  1. Instituto Politécnico Nacional, Escuela Superior de Física y Matemáticas, Edificio 9, U.P.A.L.M., Zacatenco, Del. G. A. Madero, México, D.F. C.P. 07738, México (Mexico)
  2. CNRS, UMR 8182, ICMMO, Lab. de Synthèse, Propriétés et Modélisation des Matériaux, Université de Paris-Sud, Orsay F-91405 (France)
Publication Date:
OSTI Identifier:
22689586
Resource Type:
Journal Article
Journal Name:
Materials Characterization
Additional Journal Information:
Journal Volume: 118; Other Information: Copyright (c) 2015 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 1044-5803
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; 75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; BACKSCATTERING; DISLOCATIONS; DUCTILITY; ELECTRON DIFFRACTION; GRAIN BOUNDARIES; GRAIN ORIENTATION; GRAIN SIZE; HARDENING; LATTICE PARAMETERS; NANOSTRUCTURES; PLASTICITY; RECRYSTALLIZATION; STEELS; X-RAY DIFFRACTION

Citation Formats

Cruz-Gandarilla, Francisco, Salcedo-Garrido, Ana María, E-mail: salcedo_marya@yahoo.com.mx, Bolmaro, Raúl E., E-mail: bolmaro@ifir-conicet.gov.ar, Baudin, Thierry, De Vincentis, Natalia S., E-mail: devincentis@ifir-conicet.gov.ar, and others, and. Microstructural evolution and mechanical properties on an ARB processed IF steel studied by X-ray diffraction and EBSD. United States: N. p., 2016. Web. doi:10.1016/J.MATCHAR.2016.05.025.
Cruz-Gandarilla, Francisco, Salcedo-Garrido, Ana María, E-mail: salcedo_marya@yahoo.com.mx, Bolmaro, Raúl E., E-mail: bolmaro@ifir-conicet.gov.ar, Baudin, Thierry, De Vincentis, Natalia S., E-mail: devincentis@ifir-conicet.gov.ar, & others, and. Microstructural evolution and mechanical properties on an ARB processed IF steel studied by X-ray diffraction and EBSD. United States. https://doi.org/10.1016/J.MATCHAR.2016.05.025
Cruz-Gandarilla, Francisco, Salcedo-Garrido, Ana María, E-mail: salcedo_marya@yahoo.com.mx, Bolmaro, Raúl E., E-mail: bolmaro@ifir-conicet.gov.ar, Baudin, Thierry, De Vincentis, Natalia S., E-mail: devincentis@ifir-conicet.gov.ar, and others, and. Mon . "Microstructural evolution and mechanical properties on an ARB processed IF steel studied by X-ray diffraction and EBSD". United States. https://doi.org/10.1016/J.MATCHAR.2016.05.025.
@article{osti_22689586,
title = {Microstructural evolution and mechanical properties on an ARB processed IF steel studied by X-ray diffraction and EBSD},
author = {Cruz-Gandarilla, Francisco and Salcedo-Garrido, Ana María, E-mail: salcedo_marya@yahoo.com.mx and Bolmaro, Raúl E., E-mail: bolmaro@ifir-conicet.gov.ar and Baudin, Thierry and De Vincentis, Natalia S., E-mail: devincentis@ifir-conicet.gov.ar and others, and},
abstractNote = {Accumulative Roll Bonding (ARB) is one of the so-called severe plastic deformation (SPD) processes, allowing the production of metals and alloys with ultrafine (micro-nano) structures. Materials with ultrafine grains present attractive properties like the simultaneous increase in strength and ductility. Our interest in these materials is focused on their microstructural evolution during ARB processing, eventually responsible for the enhancement of those mechanical properties. In the current work we follow the evolution of the microstructure in an interstitial-free (IF) steel deformed by ARB after consecutive processing cycles, by means of Electron BackScatter Diffraction (EBSD) and X-ray diffraction (XRD). Particularly, we present results related to texture, grain (GS) and domain sizes, grain boundary character, density of Geometrically Necessary Dislocations (GND), Grain Orientation Spread (GOS), lattice parameters, microstrain, dislocation density and their spatial arrangement. After 5 ARB cycles the system shows a microstructure constituted mainly by submicrometric grains with high angle boundaries and low presence of dislocations inside the grains. - Highlights: •The evolution of microstructure is followed simultaneously by using GAM, GOS and GND (EBSD) and XRD. •LAGBs and subgrains disappear after few cycles SSDs and HAGBs persist at the end. •Dynamic recrystallization counterbalances dislocation arrays and diminishes hardening rate. •Grain size stabilization is revealed as a mechanism for increasing ductility after few ARB cycles.},
doi = {10.1016/J.MATCHAR.2016.05.025},
url = {https://www.osti.gov/biblio/22689586}, journal = {Materials Characterization},
issn = {1044-5803},
number = ,
volume = 118,
place = {United States},
year = {2016},
month = {8}
}