Journal of Powder Materials

[Korean]
Microstructure and Mechanical Properties of CNT/Al Composite Fabricated by a Powder-in-Sheath Rolling Method utilizing Copper Tube as a Sheath: Seong-Hee Lee; J Korean Powder Metall Inst. 2014;21(5):343-348. Published online October 1, 2014; DOI: https://doi.org/10.4150/KPMI.2014.21.5.343

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Abstract PDF: A powder-in-sheath rolling (PSR) process utilizing a copper alloy tube was applied to a fabrication of a multi-walled carbon nanotube (CNT) reinforced aluminum matrix composite. A copper tube with an outer diameter of 30 mm and a wall thickness of 2 mm was used as a sheath material. A mixture of pure aluminum powders and CNTs with the volume contents of 1, 3, 5 vol% was filled in the tube by tap filling and then processed to 93.3% height reduction by a rolling mill. The relative density of the CNT/Al composite fabricated by the PSR decreased slightly with increasing of CNTs content, but showed high value more than 98%. The average hardness of the 5%CNT/Al composite increased more than 3 times, compared to that of unreinforced pure Al powder compaction. The hardness of the CNT/Al composites was some higher than that of the composites fabricated by PSR using SUS304 tube. Therefore, it is concluded that the type of tube affects largely on the mechanical properties of the CNT/Al composites in the PSR process.

[Korean]
Fabrication and Evaluation of Carbon Nanotube Reinforced Al Matrix Composite by a Powder-in-sheath Rolling Method: Seong-Hee Lee, Dongmin Hong; J Korean Powder Metall Inst. 2014;21(1):50-54. Published online February 1, 2014; DOI: https://doi.org/10.4150/KPMI.2014.21.1.50

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5 Citations

A powder-in-sheath rolling method was applied to a fabrication of a carbon nano tube (CNT) reinforced aluminum composite. A STS304 tube with an outer diameter of 34 mm and a wall thickness of 2 mm was used as a sheath material. A mixture of pure aluminum powders and CNTs with the volume contents of 1, 3, 5 vol was filled in the tube by tap filling and then processed to 73.5% height reduction by a rolling mill. The relative density of the CNT/ Al composite fabricated by the powder-in-sheath rolling decreased slightly with increasing of CNTs content, but exhibited high value more than 98. The grain size of the aluminum matrix was largely decreased with addition of CNTs; it decreased from 24 μm to 0.9 μm by the addition of only 1 volCNT. The average hardness of the composites increased by approximately 3 times with the addition of CNTs, comparing to that of unreinforced pure aluminum. It is concluded that the powder-in-sheath rolling method is an effective process for fabrication of CNT reinforced Al matrix composites.

Citations

Citations to this article as recorded by

Torsion Property of the Structure Bonded Aluminum Foam Due to Impact
G.W. Hwang, J.U. Cho
Archives of Metallurgy and Materials.2017; 62(2): 1353. CrossRef
A Fatigue Fracture Study on TDCB Aluminum Foam Specimen of Type Mode III Bonded with Adhesive
J.H. Lee, J.U. Cho
Archives of Metallurgy and Materials.2017; 62(2): 1359. CrossRef
Experimental Study On Fracture Property Of Double Cantilever Beam Specimen With Aluminum Foam
Y.C. Kim, H.K. Choi, J.U. Cho
Archives of Metallurgy and Materials.2015; 60(2): 1151. CrossRef
Experimental Study On Fracture Property Of Tapered Double Cantilever Beam Specimen With Aluminum Foam
Y.C. Kim, S.S. Kim, J.U. Cho
Archives of Metallurgy and Materials.2015; 60(2): 1459. CrossRef
Microstructure and Mechanical Properties of CNT/Al Composite Fabricated by a Powder-in-Sheath Rolling Method utilizing Copper Tube as a Sheath
Seong-Hee Lee
Journal of Korean Powder Metallurgy Institute.2014; 21(5): 343. CrossRef

[Korean]
Microstructure and Mechanical Properties of Al/SiC_p Particle Reinforced Composite Severely Deformed by ARB Process: Seong-Hee Lee, Hyoung-Wook Kim; J Korean Powder Metall Inst. 2006;13(1):39-45.; DOI: https://doi.org/10.4150/KPMI.2006.13.1.039

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Abstract PDF: The Al/SiC_p particle reinforced composite fabricated by a powder-in sheath rolling (PSR) method was severely. deformed by the accumulative roll-bonding (ARB) process. The ARB process was performed up to 8 cycles at ambient temperature without lubricant. The ARBed composite exhibited an ulbricant. grained structure similar to the other ARBed bulky materials. Tensile strength of the composite increased gradually with the number of ARB cycles, but from the 6th cycle it rather decreased slightly. These characteristics of the composite were somewhat different from those of Al powder compact fabricated by the same procedures. The difference in microstructure and mechanical properties between Al powder compact and the composite was discussed.

[Korean]
Accumulative Roll-Bonding of Al Powder Compact Fabricated by a Powder-in Sheath Rolling Method: Seong-Hee Lee; J Korean Powder Metall Inst. 2005;12(1):30-35.; DOI: https://doi.org/10.4150/KPMI.2005.12.1.030

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Abstract PDF: An aluminum powder compact consolidated by a powder-in sheath rolling (PSR) method was severely deformed by accumulative roll-bonding (ARB) process. The ARB process was performed up to 8 cycles at ambient temperature without lubrication. Optical microscope and transmission electron microscope observations revealed that microstructure of the ARB-processed Al powder compact is inhomogeneous in the thickness direction. The ultra-fine subgrains often reported in the ARB-processed bulky materials were also developed near surface of the Al powder compacts in this study. Tensile strength of the ARB-processed Al powder compact increased at the 1st cycle, but from the 2nd cycle it rather decreased slightly.

[English]
Mechanical Alloying Effect in Immiscible Cu-Based Alloy Systems.: Chung-Hyo Lee, Seong-Hee Lee, Ji-Soon Kim, Young-Soon Kwon; J Korean Powder Metall Inst. 2003;10(3):164-167.; DOI: https://doi.org/10.4150/KPMI.2003.10.3.164

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Abstract PDF

The mechanical alloying effect has been studied on the three Cu-based alloy systems with a positive heat of mixing. The extended bcc solid solution has been formed in the Cu-V system and an amorphous phase in the Cu-Ta system. However, it is round that a mixture of nanocrystalline Cu and Mo Is formed in the Cu-Mo system. The neutron diffraction has been employed at a main tool to characterize the detailed amorphization process. The formation of an amorphous phase in Cu-Ta system can be understood by assuming that the smaller Cu atoms preferentially enter into the bcc Ta lattice during ball milling.

Citations

Citations to this article as recorded by

Microstructure and Mechanical Properties of 3vol%CNT Reinforced Cu Matrix Composite Fabricated by a Powder in Sheath Rolling Method
Seong-Hee Lee
Korean Journal of Materials Research.2020; 30(3): 149. CrossRef
Synthesis of Ultra Fine Titanium-Tungsten Carbide Powder from Titanium Dioxide and Ammonium Metatungstate
Gil-Geun Lee, Gook-Hyun Ha
MATERIALS TRANSACTIONS.2009; 50(1): 187. CrossRef
Synthesis of WC Nanosized Powder by the Plasma Arc Discharge Process
Seoung Soo Lee, Dong Won Joo, Yeon Gil Jung, Chul Jin Choi
Key Engineering Materials.2007; 336-338: 2086. CrossRef
Characterization of Ni Nanopowders Produced by Electrical Explosion of Wire Technique
Hwan Tae Kim, Won Sik Seo, Dae Hwan Kwon, Pyuck Pa Choi, Ji Soon Kim, Young Soon Kwon
Materials Science Forum.2006; 510-511: 710. CrossRef

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