Abstract
Reinforcing efficiency of multi-walled carbon nanotubes (MWCNTs) has been investigated for Fe-based composites by powder metallurgy routes. For the mechanically milled Fe powder containing dispersed MWCNTs, first, the composite are produced by hot-pressing at 570°C for 2h under 140MPa, in which MWCNTs provide a high reinforcement factor of 0.6 and a yield stress of 2.2GPa at the 4vol% MWCNTs. On the other hand, for the composites produced by compaction and then sintering at 850°C, the dispersed MWCNTs decompose to be a Fe-C interstitial alloyed phase, in which the composite shows a relatively low yield stress of 450MPa at the 8.3vol% Fe-C phase. For the composite sintered at high temperature of 1150°C, the reinforcement factor is found to be 0.2 and a yield stress of 280MPa at the 9.2vol% Fe3C. These results demonstrate that MWCNTs with a high aspect ratio and a strong bonding character with the matrix have a great role in reinforcing the Fe-based composites.
| Original language | English |
|---|---|
| Pages (from-to) | 321-325 |
| Number of pages | 5 |
| Journal | Materials Science and Engineering A |
| Volume | 582 |
| DOIs | |
| Publication status | Published - 2013 Oct 1 |
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All Science Journal Classification (ASJC) codes
- Materials Science(all)
- Condensed Matter Physics
- Mechanics of Materials
- Mechanical Engineering
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Mechanical properties of Fe-based composites reinforced with multi-walled carbon nanotubes. / Suh, J. Y.; Bae, D. H.
In: Materials Science and Engineering A, Vol. 582, 01.10.2013, p. 321-325.Research output: Contribution to journal › Article
TY - JOUR
T1 - Mechanical properties of Fe-based composites reinforced with multi-walled carbon nanotubes
AU - Suh, J. Y.
AU - Bae, D. H.
PY - 2013/10/1
Y1 - 2013/10/1
N2 - Reinforcing efficiency of multi-walled carbon nanotubes (MWCNTs) has been investigated for Fe-based composites by powder metallurgy routes. For the mechanically milled Fe powder containing dispersed MWCNTs, first, the composite are produced by hot-pressing at 570°C for 2h under 140MPa, in which MWCNTs provide a high reinforcement factor of 0.6 and a yield stress of 2.2GPa at the 4vol% MWCNTs. On the other hand, for the composites produced by compaction and then sintering at 850°C, the dispersed MWCNTs decompose to be a Fe-C interstitial alloyed phase, in which the composite shows a relatively low yield stress of 450MPa at the 8.3vol% Fe-C phase. For the composite sintered at high temperature of 1150°C, the reinforcement factor is found to be 0.2 and a yield stress of 280MPa at the 9.2vol% Fe3C. These results demonstrate that MWCNTs with a high aspect ratio and a strong bonding character with the matrix have a great role in reinforcing the Fe-based composites.
AB - Reinforcing efficiency of multi-walled carbon nanotubes (MWCNTs) has been investigated for Fe-based composites by powder metallurgy routes. For the mechanically milled Fe powder containing dispersed MWCNTs, first, the composite are produced by hot-pressing at 570°C for 2h under 140MPa, in which MWCNTs provide a high reinforcement factor of 0.6 and a yield stress of 2.2GPa at the 4vol% MWCNTs. On the other hand, for the composites produced by compaction and then sintering at 850°C, the dispersed MWCNTs decompose to be a Fe-C interstitial alloyed phase, in which the composite shows a relatively low yield stress of 450MPa at the 8.3vol% Fe-C phase. For the composite sintered at high temperature of 1150°C, the reinforcement factor is found to be 0.2 and a yield stress of 280MPa at the 9.2vol% Fe3C. These results demonstrate that MWCNTs with a high aspect ratio and a strong bonding character with the matrix have a great role in reinforcing the Fe-based composites.
UR - http://www.scopus.com/inward/record.url?scp=84881231421&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84881231421&partnerID=8YFLogxK
U2 - 10.1016/j.msea.2013.06.057
DO - 10.1016/j.msea.2013.06.057
M3 - Article
AN - SCOPUS:84881231421
VL - 582
SP - 321
EP - 325
JO - Materials Science & Engineering A: Structural Materials: Properties, Microstructure and Processing
JF - Materials Science & Engineering A: Structural Materials: Properties, Microstructure and Processing
SN - 0921-5093
ER -