Microstructure and damping capacity of AA6061/graphite surface composites produced through friction stir processing
Source abstract
Abstract
Abstract The present study is to improve the damping properties of AA6061-T6 alloy by incorporating graphite (Gr) flakes through friction stir processing (FSP). The amount of graphite varied from 5 to 15 vol%. The distribution of graphite particles and the microstructure refinement were analysed using optical and electron microscopy. The grains were indistinguishable in the stirred zone. The hardness of the surface composites decreased with an increase of graphite fraction. The dynamic mechanical analyzer was used to analyze the damping capacity of specimens extracted from the stir zone. The frequency dependent and temperature dependent damping capacity of FSP-ed AA6061 and the surface composites were observed to be better than the base metal. Significantly, the damping capacity of composite with 15 vol% graphite was 3.5 times of base-metal's damping at 250 °C.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Aluminum Alloys Composites Properties · Advanced Welding Techniques Analysis · Electromagnetic wave absorption materials
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (15)
Show source-provided references
1. Damping capacity of BaTiO3/Al composites fabricated by hot Extrusion10.1016/S1003-6326(11)61493-3 ↗
2. Damping behaviour of metal matrix composites10.1007/s12666-014-0462-z ↗
3. Damping capacity and dynamic modulus of hot pressed AlSi Composites reinforced with different SiC particle sized10.1016/j.compositesb.2016.01.008 ↗
4. Effect of secondary phases on damping behaviour of metals, alloys and metal matrix composites10.1016/0927-796X(94)90010-8 ↗
5. Influence of addition of Grp/Al2O3p with SiCp on wear properties of aluminum alloy 6061-T6 hybrid composites via friction stir processing10.1016/S1003-6326(13)62593-5 ↗
6. Shape memory effect, thermal expansion and damping property of friction stir processed NiTip/Al composite10.1016/j.jmst.2015.12.013 ↗
7. Simultaneously improving mechanical properties and damping capacity of Al-Mg-Si alloy through friction stir processing10.1016/j.matchar.2017.07.037 ↗
8. Effects of friction stir processing and minor Sc addition on the microstructure, mechanical properties, and damping capacity of 7055 Al alloy10.1016/j.matchar.2017.11.030 ↗
9. Influence of surface morphology and UFG on damping and mechanical properties of composite reinforced with spinel MgAl2O4-SiC core-shell microcomposites10.1016/j.matchar.2016.11.042 ↗
10. Synthesis, characterization of graphene oxide wrapped silicon carbide for excellent mechanical and damping performance for aerospace application10.1016/j.jallcom.2017.12.069 ↗
11. An investigation into the effects of graphite particles on the damping behavior of ZA-27 alloy composite material10.1016/j.matdes.2010.07.006 ↗
12. Damping behaviour of 6061Al/Gr Metal matrix composites10.1007/BF02656638 ↗
13. Modeling of the effect of temperature, frequency and phase transformations on the viscoelastic properties of AA 7075-T6 and AA 2024-T3 aluminum alloys10.1007/s11661-012-1281-7 ↗
14. Viscoelastic behavior of a novel aluminum metal matrix composite and comparison with pure aluminum, aluminum alloys, and a composite made of Al-Mg-Si alloy reinforced with SiC particles10.1016/j.jallcom.2018.02.103 ↗
15. Damping behavior of discontinuously reinforced Al alloy metal matrix composites10.1007/BF02669639 ↗