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Title: Microstructure, crystallographic texture and mechanical properties of friction stir welded AA2017A

Abstract

In this study a thick section (20 mm) friction stir welded AA2017A-T451 has been characterized in terms of microstructure, crystallographic texture and mechanical properties. For microstructural analysis both optical and scanning electron microscopes have been used. A detailed crystallographic texture analysis has been carried out using the electron back scattering diffraction technique. Crystallographic texture has been examined in both shoulder and probe affected regions of the weld NG. An entirely weak texture is observed at the shoulder affected region which is mainly explained by the effect of the sequential multi pass deformation experienced by both tool probe and tool shoulder. The texture in the probe dominated region at the AS side of the weld is relatively weak but still assembles the simple shear texture of FCC metals with B/B{sup Macron} and C components existing across the whole map. However, the texture is stronger at the RS than at the AS of the weld, mainly dominated byB/B{sup Macron} components and with C component almost absent across the map. An alternating bands between (B) components and (B{sup Macron }) component are observed only at the AS side of the weld. - Highlights: Black-Right-Pointing-Pointer Detailed investigation of microstructure and crystallographic texture. Black-Right-Pointing-Pointer Themore » grain size is varied from the top to the bottom of the NG. Black-Right-Pointing-Pointer An entirely weak texture is observed at the shoulder affected region. Black-Right-Pointing-Pointer The texture in the probe affected region is dominated by simple shear texture.« less

Authors:
 [1];  [2]; ;  [1];  [3]
  1. Institute for Microstructural and Mechanical Processing Engineering, University of Sheffield (IMMPETUS), Mappin Street, Sheffield S1 3JD (United Kingdom)
  2. (Egypt)
  3. TWI LTD, Granta Park, Great Abington, Cambridge CB21 6AL (United Kingdom)
Publication Date:
OSTI Identifier:
22066422
Resource Type:
Journal Article
Resource Relation:
Journal Name: Materials Characterization; Journal Volume: 64; Journal Issue: Complete; Other Information: Copyright (c) 2011 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; ALUMINIUM BASE ALLOYS; BACKSCATTERING; DEFORMATION; ELECTRON DIFFRACTION; FCC LATTICES; FRICTION; GRAIN SIZE; MECHANICAL PROPERTIES; SCANNING ELECTRON MICROSCOPY; SHEAR; TEXTURE; WELDED JOINTS; WELDING

Citation Formats

Ahmed, M.M.Z., E-mail: mohamed_ahmed4@s-petrol.suez.edu.eg, Department of Metallurgical and Materials Engineering, Suez Canal University, Suez 43721, Wynne, B.P., Rainforth, W.M., and Threadgill, P.L. Microstructure, crystallographic texture and mechanical properties of friction stir welded AA2017A. United States: N. p., 2012. Web. doi:10.1016/J.MATCHAR.2011.12.005.
Ahmed, M.M.Z., E-mail: mohamed_ahmed4@s-petrol.suez.edu.eg, Department of Metallurgical and Materials Engineering, Suez Canal University, Suez 43721, Wynne, B.P., Rainforth, W.M., & Threadgill, P.L. Microstructure, crystallographic texture and mechanical properties of friction stir welded AA2017A. United States. doi:10.1016/J.MATCHAR.2011.12.005.
Ahmed, M.M.Z., E-mail: mohamed_ahmed4@s-petrol.suez.edu.eg, Department of Metallurgical and Materials Engineering, Suez Canal University, Suez 43721, Wynne, B.P., Rainforth, W.M., and Threadgill, P.L. Wed . "Microstructure, crystallographic texture and mechanical properties of friction stir welded AA2017A". United States. doi:10.1016/J.MATCHAR.2011.12.005.
@article{osti_22066422,
title = {Microstructure, crystallographic texture and mechanical properties of friction stir welded AA2017A},
author = {Ahmed, M.M.Z., E-mail: mohamed_ahmed4@s-petrol.suez.edu.eg and Department of Metallurgical and Materials Engineering, Suez Canal University, Suez 43721 and Wynne, B.P. and Rainforth, W.M. and Threadgill, P.L.},
abstractNote = {In this study a thick section (20 mm) friction stir welded AA2017A-T451 has been characterized in terms of microstructure, crystallographic texture and mechanical properties. For microstructural analysis both optical and scanning electron microscopes have been used. A detailed crystallographic texture analysis has been carried out using the electron back scattering diffraction technique. Crystallographic texture has been examined in both shoulder and probe affected regions of the weld NG. An entirely weak texture is observed at the shoulder affected region which is mainly explained by the effect of the sequential multi pass deformation experienced by both tool probe and tool shoulder. The texture in the probe dominated region at the AS side of the weld is relatively weak but still assembles the simple shear texture of FCC metals with B/B{sup Macron} and C components existing across the whole map. However, the texture is stronger at the RS than at the AS of the weld, mainly dominated byB/B{sup Macron} components and with C component almost absent across the map. An alternating bands between (B) components and (B{sup Macron }) component are observed only at the AS side of the weld. - Highlights: Black-Right-Pointing-Pointer Detailed investigation of microstructure and crystallographic texture. Black-Right-Pointing-Pointer The grain size is varied from the top to the bottom of the NG. Black-Right-Pointing-Pointer An entirely weak texture is observed at the shoulder affected region. Black-Right-Pointing-Pointer The texture in the probe affected region is dominated by simple shear texture.},
doi = {10.1016/J.MATCHAR.2011.12.005},
journal = {Materials Characterization},
number = Complete,
volume = 64,
place = {United States},
year = {Wed Feb 15 00:00:00 EST 2012},
month = {Wed Feb 15 00:00:00 EST 2012}
}