Carbon nanotube (CNT)-AlSi10Mg composites were fabricated by selective laser melting (SLM). The influence of CNTs on the density, microstructure, and strength of SLM CNT-AlSi10Mg composites was investigated. The addition of CNTs over 0.1 wt-% significantly damaged the density due to the high surface energy of the CNTs. The network Si eutectic had no significant difference in either the SLM AlSi10Mg alloy or the CNT-AlSi10Mg composite. Reserved CNTs with a short scale were observed in the SLM CNT(0.5 wt-%)-AlSi10Mg composite. The ultimate tensile strength of the 0.05 wt-% CNT-AlSi10Mg composite was 441.2 ± 0.9 MPa, which was higher than that of AlSi10Mg alloy. The grain boundary strengthening played an important role in the reinforcement of CNT-AlSi10Mg composite because of the refined grain.
KimDK, HwangJH, KimEY, Evaluation of the stress-strain relationship of constituent phases in AlSi10Mg alloy produced by selective laser melting using crystal plasticity FEM. J Alloys Compd. 2017;714:687–697. doi: 10.1016/j.jallcom.2017.04.264
2.
KimDK, WooW, Hwang JHJH, Stress partitioning behavior of an AlSi10Mg alloy produced by selective laser melting during tensile deformation using in situ neutron diffraction. J Alloys Compd. 2016;68:6281–6286.
3.
GuDD, MeinersW, WissenbachK, Laser additive manufacturing of metallic components: materials, processes and mechanisms. Int Mater Rev. 2010;57:133–164. doi: 10.1179/1743280411Y.0000000014
4.
ZhouX, LiuX, ZhangD, Balling phenomena in selective laser melted tungsten. J Mater Process Technol. 2015;222:33–42. doi: 10.1016/j.jmatprotec.2015.02.032
5.
KirkaMM, NandwanaP, LeeY, Solidification and solid-state transformation sciences in metals additive manufacturing. Scr Mater. 2017;135:130–134. doi: 10.1016/j.scriptamat.2017.01.005
6.
WeiP, WeiZ, ChenZ, The AlSi10Mg samples produced by selective laser melting: single track, densification, microstructure and mechanical behavior. Appl Surf Sci. 2017;408:38–50. doi: 10.1016/j.apsusc.2017.02.215
7.
WeingartenC, BuchbinderD, PirchN, Formation and reduction of hydrogen porosity during selective laser melting of AlSi10Mg. J Mater Process Technol. 2015;221:112–120. doi: 10.1016/j.jmatprotec.2015.02.013
8.
LiuYJ, LiuZ, JiangY, Gradient in microstructure and mechanical property of selective laser melted AlSi10Mg. J Alloys Compd. 2018;735:1414–1421. doi: 10.1016/j.jallcom.2017.11.020
9.
KempenK, ThijsL, Van HumbeeckJ, Mechanical properties of AlSi10Mg Produced by selective laser melting. Phys Procedia. 2012;39:439–446. doi: 10.1016/j.phpro.2012.10.059
10.
ThijsL, KempenK, KruthJP, Fine-structured aluminium products with controllable texture by selective laser melting of pre-alloyed AlSi10Mg powder. Acta Mater. 2013;61:1809–1819. doi: 10.1016/j.actamat.2012.11.052
11.
AboulkhairNT, EverittNM, AshcroftI, Reducing porosity in AlSi10Mg parts processed by selective laser melting. Addit Manuf. 2014;1-4:77–86. doi: 10.1016/j.addma.2014.08.001
12.
GuD, WangH, DaiD, Rapid fabrication of Al-based bulk-form nanocomposites with novel reinforcement and enhanced performance by selective laser melting. Scr Mater. 2015;96:25–28. doi: 10.1016/j.scriptamat.2014.10.011
13.
LiXP, JiG, ChenZ, Selective laser melting of nano-TiB2 decorated AlSi10Mg alloy with high fracture strength and ductility. Acta Mater. 2017;129:183–193. doi: 10.1016/j.actamat.2017.02.062
14.
WangY, ShiJ, LuS, Investigation of porosity and mechanical properties of graphene nanoplatelets-reinforced AlSi10Mg by selective laser melting. J Micro Nano-Manuf. 2017;6:010902–010907. doi: 10.1115/1.4038454
15.
WongEW, SheehanPE, LieberCM.Nanobeam mechanics: Elasticity, strength, and toughness of nanorods and nanotubes. Science. 1997;277:1971–1975. doi: 10.1126/science.277.5334.1971
TreacyMMJ, EbbesenTW, GibsonJM.Exceptionally high Young's modulus observed for individual carbon nanotubes. Nature. 1996;381:678–680. doi: 10.1038/381678a0
18.
YuMF, LourieO, DyerMJ, Strength and breaking mechanism of multiwalled carbon nanotubes under tensile load. Science. 2000;287:637–640. doi: 10.1126/science.287.5453.637
19.
KuzumakiT, MiyazawaK, IchinoseH, Processing of carbon nanotube reinforced aluminum composite. J Mater Res. 1998;13:2445–2449. doi: 10.1557/JMR.1998.0340
20.
XuCL, WeiBQ, MaRZ, Fabrication of aluminum-carbon nanotube composites and their electrical properties. Carbon N Y. 1999;37:855–858. doi: 10.1016/S0008-6223(98)00285-1
LahaT, AgarwalA, McKechnieT, Synthesis and characterization of plasma spray formed carbon nanotube reinforced aluminum composite. Mater Sci Eng, A. 2004;381:249–258. doi: 10.1016/j.msea.2004.04.014
23.
EsawiAMK, MorsiK, SayedA, Fabrication and properties of dispersed carbon nanotube-aluminum composites. Mater Sci Eng A. 2009;508:167–173. doi: 10.1016/j.msea.2009.01.002
24.
HeC, ZhaoN, ShiC, An approach to obtaining homogeneously dispersed carbon nanotubes in Al powders for preparing reinforced Al-matrix composites. Adv Mater. 2007;19:1128–1132. doi: 10.1002/adma.200601381
25.
NoguchiT, MagarioA, FukazawaS, Carbon nanotube/aluminium composites with uniform dispersion. Mater Trans. 2004;45:602–604. doi: 10.2320/matertrans.45.602
26.
ASM Handbook Committee. ASM Handbook volume 2: properties and selection: nonferrous alloys and special-purpose materials, 10th edition. Materials Park, OH: ASM International; 1990.
27.
MokdadF, ChenD, LiuZ, Deformation and strengthening mechanisms of a carbon nanotube reinforced aluminum composite. Carbon N Y. 2016;104:64–77. doi: 10.1016/j.carbon.2016.03.038
28.
CarpenterCR, ShipwayPH, ZhuY.The influence of CNT co-deposition on electrodeposit grain size and hardness. Surf Coat Technol. 2011;205:5059–5063. doi: 10.1016/j.surfcoat.2011.05.008
29.
LiuZY, XiaoBL, WangWG, Modelling of carbon nanotube dispersion and strengthening mechanisms in Al matrix composites prepared by high energy ball milling-powder metallurgy method. Compos Part A. 2017;94:189–198. doi: 10.1016/j.compositesa.2016.11.029
30.
ZhaoX, SongB, FanW, Selective laser melting of carbon/AlSi10Mg composites: microstructure, mechanical and electronical properties. J Alloys Compd. 2016;665:271–281. doi: 10.1016/j.jallcom.2015.12.126
31.
WangIW, KutteriDA, GaoBY, Methana pyrolysis for carbon nanotubes and COx-Free H2 over transition-metal cataysts. Energy Fuels. 2019;33:197–205. doi: 10.1021/acs.energyfuels.8b03502
ZhangZ, ChenDL.Consideration of Orowan strengthening effect in particulate-reinforced metal matrix nanocomposites: A model for predicting their yield strength. Scr Mater. 2006;54:1321–1326. doi: 10.1016/j.scriptamat.2005.12.017
