Quantitative characterization of the microstructure of an electron-beam welded medium strength Al-Zn-Mg alloy
| Autor: | G. Texier, L. Delfaut-Durut, S. Ringeval, 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), VALDUC (DAM/VALDUC), Direction des Applications Militaires (DAM), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA) |
| Jazyk: | angličtina |
| Rok vydání: | 2009 |
| Předmět: |
Materials science
Alloy 02 engineering and technology Precipitation engineering.material 01 natural sciences Indentation hardness [SPI.MAT]Engineering Sciences [physics]/Materials Scattering 2219-aluminum-alloy 0103 physical sciences Electron beam welding General Materials Science Magnesium alloy 010302 applied physics Small-Angle X-ray Precipitation (chemistry) Al-Zn-Mg alloy Mechanical Engineering Metallurgy [CHIM.MATE]Chemical Sciences/Material chemistry precipitation kinetics 021001 nanoscience & nanotechnology Condensed Matter Physics Microstructure Grain size Mechanics of Materials Volume fraction engineering 0210 nano-technology |
| Zdroj: | Materials Science and Engineering A-Structural Materials Properties Microstructure and Processing Materials Science and Engineering A-Structural Materials Properties Microstructure and Processing, Elsevier, 2009, 517 (1-2), pp.361-368. ⟨10.1016/j.msea.2009.03.088⟩ Materials Science and Engineering A-Structural Materials Properties Microstructure and Processing, 2009, 517 (1-2), pp.361-368. ⟨10.1016/j.msea.2009.03.088⟩ |
| DOI: | 10.1016/j.msea.2009.03.088⟩ |
| Popis: | International audience; The microstructure of an electron beam weld of a medium strength Al-4.5%Zn-1%Mg (wt.%) alloy has been characterized in terms of solute element distribution, grain structure and fine-scale precipitates after a T6 post-welding heat treatment. It is found that the weld nugget consists of small grains, whose size (1-50 mu m) is heterogeneously distributed. The nugget composition is unaffected in Mg but depleted of 20% in Zn in the first run zone. This is shown to affect the fine-scale precipitate microstructure, which has been mapped in the weld cross-section using Small-Angle X-ray Scattering. It is shown that the nugget exhibits a precipitate size only slightly different from that of the base material after the post-welding heat treatment, and that the difference in volume fraction, much more significant, can be understood from the magnitude of the solute depletion. The relative precipitate sizes and volume fractions in the weld nugget and base material enable to understand effectively the corresponding microhardness levels. (C) 2009 Elsevier B.V. All rights reserved. |
| Databáze: | OpenAIRE |
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