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The effects of nanosized particles on microstructural evolution of an in-situ TiB2/6063Al composite produced by friction stir processing
- Source :
- Materials & Design, Vol 88, Iss, Pp 999-1007 (2015), Materials and Design, Materials and Design, Elsevier, 2015, 88, pp. 999-1007 ⟨10.1016/j.matdes.2015.09.127 ⟩, Materials and Design, Elsevier, 2015, Materials & Design, 88, pp.999-1007. ⟨10.1016/j.matdes.2015.09.127⟩, Materials and Design, Elsevier, 2015, 88, pp.999-1007. ⟨10.1016/j.matdes.2015.09.127⟩, Materials & Design, Materials & Design, 2015, 88, pp.999-1007. ⟨10.1016/j.matdes.2015.09.127⟩
- Publication Year :
- 2015
- Publisher :
- Elsevier, 2015.
-
Abstract
- The homogenous redistribution of nanosized TiB2 particles in a fine-grained in-situ AA6063/TiB2 composite has been achieved by friction stir processing (FSP). The effects of TiB2 particles on as-deformed structure in the nugget zone and its thermal stability after additional T6 heat treatment are quantitatively evaluated by using neutron diffraction, scanning electron microscopy associated with electron backscatter diffraction and synchrotron X-ray line profile analysis. The results are compared to those obtained from a FSPed AA6063 alloy and, show first that, average grain size of the FSPed AA6063/TiB2 composite is smaller than that of the FSPed AA6063 alloy, while grain size distribution is more uniform. Second, dislocation density estimated in the FSPed AA6063/TiB2 composite is higher than that in the FSPed AA6063 alloy. Third, a small number of grains are dynamically recrystallized in the FSPed AA6063/TiB2 composite compared to its alloy counterpart, which indicates that recrystallization and grain growth during FSP and T6 heat treatment are effectively inhibited by the presence of nanosized TiB2 particles. Keywords: Metal-matrix composites (MMCs), X-ray diffraction (XRD), Transmission electron microscopy (TEM), Neutron diffraction, Friction stir processing
- Subjects :
- Friction stir processing
Materials science
Composite number
SEVERE PLASTIC-DEFORMATION
DISLOCATION DENSITY
GRAIN-REFINEMENT
Metal-matrix composites (MMCs)
HIGH-PRESSURE TORSION
X-ray diffraction (XRD)
Neutron diffraction
[SPI.MAT]Engineering Sciences [physics]/Materials
STRENGTH
lcsh:TA401-492
General Materials Science
Transmission electron microscopy (TEM)
ComputingMilieux_MISCELLANEOUS
ALUMINUM-ALLOYS
WELDED-JOINTS
Mechanical Engineering
Metallurgy
Recrystallization (metallurgy)
PROFILE ANALYSIS
[CHIM.MATE]Chemical Sciences/Material chemistry
MECHANICAL-PROPERTIES
Grain size
Grain growth
Mechanics of Materials
Particle-size distribution
[PHYS.COND.CM-MS]Physics [physics]/Condensed Matter [cond-mat]/Materials Science [cond-mat.mtrl-sci]
lcsh:Materials of engineering and construction. Mechanics of materials
Severe plastic deformation
Electron backscatter diffraction
TIB2 PARTICLES
Subjects
Details
- Language :
- English
- ISSN :
- 02641275 and 02613069
- Volume :
- 88
- Database :
- OpenAIRE
- Journal :
- Materials & Design
- Accession number :
- edsair.doi.dedup.....1b7f8548865406211f5b888c41ca2303