Elevated temperature tensile properties and thermal expansion of CNT/2009Al composites
Source abstract
Abstract
1.5 vol.% and 4.5 vol.% carbon nanotubes reinforced 2009Al (CNT/2009Al) composites with homogeneously dispersed CNTs and refined matrix grains, were fabricated using powder metallurgy (PM) followed by 4-pass friction stir processing (FSP). Tensile properties of the composites between 293 and 573 K and the coefficient of thermal expansion (CTE) from 293 to 473 K were tested. It was indicated that load transfer mechanism still takes effect at temperatures elevated up to 573 K, thus the yield strength of the 1.5 vol.% CNT/2009Al composite at 423-573 K, was enhanced compared with the 2009Al matrix. However, for the 4.5 vol.% CNT/2009Al composite, the yield strength at 573 K was even lower than that for the matrix, due to the quicker softening of ultrafine-grained matrix. Compared with the 2009Al matrix, the CTEs of the composites were greatly reduced for the zero thermal expansion and high modulus of the CNTs and could be well predicted by the Schapery's model. (C) 2012 Elsevier Ltd. All rights reserved.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Advanced ceramic materials synthesis · Aluminum Alloys Composites Properties · Advanced materials and composites
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (29)
Show source-provided references
1. Young’s modulus of single-walled nanotubes10.1103/PhysRevB.58.14013 ↗
2. Nanobeam mechanics: elasticity, strength, and toughness of nanorods and nanotubes10.1126/science.277.5334.1971 ↗
3. Mechanical properties of carbon nanotubes: a fiber digest for beginners10.1016/S0008-6223(02)00012-X ↗
4. Electrostatic deflections and electromechanical resonances of carbon nanotubes10.1126/science.283.5407.1513 ↗
5. Mechanics of carbon nanotubes10.1115/1.1490129 ↗
6. High-temperature shrinkage of single-walled carbon nanotube bundles up to 1600K10.1063/1.372345 ↗
7. Strengthening in carbon nanotube/aluminium (CNT/Al) composites10.1016/j.scriptamat.2005.07.022 ↗
8. Processing and properties of carbon nanotubes reinforced aluminum composites10.1016/j.msea.2006.08.057 ↗
9. Reinforcement with carbon nanotubes in aluminum matrix composites10.1016/j.scriptamat.2008.04.006 ↗
10. Thermal expansion behaviors of aluminum composite reinforced with carbon nanotubes10.1016/j.matlet.2007.11.086 ↗
11. Carbon nanotube composite: dispersion routes and field emission parameters10.1016/j.compscitech.2007.08.030 ↗
12. Fabrication and properties of dispersed carbon nanotube–aluminum composites10.1016/j.msea.2009.01.002 ↗
13. Microstructural and mechanical analysis of carbon nanotube reinforced magnesium alloy powder composites10.1016/j.msea.2010.03.049 ↗
14. Characteristics of powder metallurgy pure titanium matrix composite reinforced with multi-wall carbon nanotubes10.1016/j.compscitech.2009.01.026 ↗
15. End morphology of ball milled carbon nanotubes10.1016/j.carbon.2004.03.040 ↗
16. Friction stir processing: a tool to homogenize nanocomposite aluminum alloys10.1016/S1359-6462(00)00578-9 ↗
17. Friction stir processing: a novel technique for fabrication of surface composite10.1016/S0921-5093(02)00199-5 ↗
18. Nanocrystallized magnesium alloy-uniform dispersion of C60 molecules10.1016/j.scriptamat.2006.07.055 ↗
19. Survivability of single-walled carbon nanotubes during friction stir processing10.1088/0957-4484/17/12/044 ↗
20. MWCNTs/AZ31 surface composites fabricated by friction stir processing10.1016/j.msea.2006.01.016 ↗
21. Singly dispersed CNTs in CNT/Al composite fabricated by powder metallurgy combined with friction stir processing10.1016/j.carbon.2011.12.034 ↗
22. Evoluation of thermal stability of ultrafine grained aluminium matrix composites reinforced with carbon nanotubes10.1016/j.compscitech.2011.09.001 ↗
23. Reinforcing effects of carbon nanotubes in structural aluminum matrix nanocomposites10.1557/jmr.2009.0318 ↗
24. High temperature strength and failure of the Ni-base superalloy PM 303010.1016/j.ijplas.2008.06.005 ↗
25. Clyne TW, Withers PJ. An introduction to metal matrix composites. England (Cambridge): Cambridge Univ Press, 1993. p. 120–3.10.1017/CBO9780511623080 ↗
26. Mechanical and thermal expansion behavior of hipped aluminum-TiB2 composites10.1016/j.matchemphys.2005.07.075 ↗
27. A theoretical approach for the thermal expansion behavior of the particulate reinforced aluminum matrix composite Part I: a thermal expansion model for composites with mono-dispersed spherical particles10.1023/A:1017957306645 ↗
28. The effect of particle size and volume fraction of the reinforced phases on the linear thermal expansion in the Al–Si–SiCp system10.1016/j.matchemphys.2004.05.046 ↗
29. Thermal expansion behavior of aluminum alloys reinforced with alumina planar random short fibers10.1023/A:1017973132276 ↗