A combined approach to microstructure mapping of an Al-Li AA2199 friction stir weld
| Autor: | Axel Steuwer, Myriam Dumont, Philip B. Prangnell, Soran Birosca, J. Altenkirch, Philip J. Withers, Alexis Deschamps |
|---|---|
| Přispěvatelé: | Science et Ingénierie des Matériaux et Procédés (SIMaP), Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut National Polytechnique de Grenoble (INPG)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), Institut des Matériaux, de Microélectronique et des Nanosciences de Provence (IM2NP), Aix Marseille Université (AMU)-Université de Toulon (UTLN)-Centre National de la Recherche Scientifique (CNRS), Institut Laue-Langevin (ILL), Univ. de Mancester Sch. Mat., University of Manchester [Manchester], Université de Toulon (UTLN)-Centre National de la Recherche Scientifique (CNRS)-Aix Marseille Université (AMU), ILL |
| Jazyk: | angličtina |
| Rok vydání: | 2011 |
| Předmět: |
lithium alloys
Materials science Polymers and Plastics Friction stir welding Scanning electron microscope Neutron diffraction Alloy zr alloy 02 engineering and technology engineering.material 01 natural sciences neutron diffraction residual-stress 0103 physical sciences Solvus Cu-Mg alloys small-angle synchrotron X-Ray scattering 010302 applied physics synchrotron radiation Metallurgy aluminiuim alloys Metals and Alloys [CHIM.MATE]Chemical Sciences/Material chemistry grain structure 021001 nanoscience & nanotechnology Microstructure Electronic Optical and Magnetic Materials Volume fraction Ceramics and Composites engineering TEM lattice parameter 0210 nano-technology Electron backscatter diffraction |
| Zdroj: | Acta Materialia Acta Materialia, 2011, 59 (8), pp.3002-3011. ⟨10.1016/j.actamat.2011.01.040⟩ Acta Materialia, Elsevier, 2011, 59 (8), pp.3002-3011. ⟨10.1016/j.actamat.2011.01.040⟩ |
| ISSN: | 1359-6454 |
| Popis: | International audience; A wide range of complementary techniques are used to build up a detailed picture of the microstructural zones found in friction stir welds (FSW) in an advanced AA2199 Al-Li alloy. Neutron and synchrotron X-ray diffraction, transmission electron microscopy, differential scanning calorimetry, small angle X-ray scattering, scanning electron microscopy, electron backscatter diffraction (EBSD) and hardness mapping are brought together to build up a detailed two-dimensional picture of the grain morphology, precipitate type, size, volume fraction and matrix solute content across the weld cross section and to explain the general lack of a W-shaped hardness profile across FSW in third-generation Al-Li-Cu Mg alloys. Dissolution of the age-hardening phases occurred in different regions of the weld, depending on their respective solvus temperatures, with 5' dissolving within the heat-affected zone and T(1) coarsening in the thermo-mechanically affected zone before going into solution in the weld nugget. Changes to the precipitate distribution, and especially to the T1 phase, are linked to a significant reduction in hardness (strength) and unstrained lattice parameter across the weld zone. It was also possible to show that the low recovery of nugget zone hardness is primarily due to its poor natural ageing response. (C) 2011 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect