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https://hdl.handle.net/2440/74790
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DC Field | Value | Language |
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dc.contributor.author | Zhu, H. | - |
dc.contributor.author | Jiang, Y. | - |
dc.contributor.author | Yao, Y. | - |
dc.contributor.author | Song, J. | - |
dc.contributor.author | Li, J. | - |
dc.contributor.author | Xie, Z. | - |
dc.date.issued | 2012 | - |
dc.identifier.citation | Materials Chemistry and Physics, 2012; 137(2):532-542 | - |
dc.identifier.issn | 0254-0584 | - |
dc.identifier.issn | 1879-3312 | - |
dc.identifier.uri | http://hdl.handle.net/2440/74790 | - |
dc.description.abstract | In-situ aluminum matrix composites were fabricated from Al-TiO 2-graphitic C powder mixtures using exothermic dispersion method. The effects of C/TiO2 molar ratio on the reaction processes, activation energies and mechanical properties of the resulting materials were investigated. When the C/TiO2 molar ratio is 0, Al reacts with TiO2 to produce fine α-Al2O3 particles and Ti, which then reacts with Al to form large rod-like Al3Ti phase. By adding graphite C into the Al-TiO2 system, the activation energy of the first reactive step increases; in addition, the resultant Ti preferentially reacts with C to form hard TiC particles. When the C/TiO2 molar ratio increases to 1.0, the Al3Ti phase disappears and the reinforcements consist of nano-sized α-Al2O3 and TiC phases. The tensile strength of the composites increases from 239.2 MPa to 351.8 MPa and the elongation increases from 4.1% to 5.6%, suggesting a marked increase in damage tolerance (i.e., toughness). © 2012 Elsevier B.V. All rights reserved. | - |
dc.description.statementofresponsibility | Heguo Zhu, Yalin Jiang, Yinqun Yao, Jinzhu Song, Jianliang Li, Zonghan Xie | - |
dc.language.iso | en | - |
dc.publisher | Elsevier Science SA | - |
dc.rights | © 2012 Elsevier B.V. All rights reserved. | - |
dc.source.uri | http://dx.doi.org/10.1016/j.matchemphys.2012.09.052 | - |
dc.subject | Composite materials | - |
dc.subject | Chemical synthesis | - |
dc.subject | Differential scanning calorimetry (DSC) | - |
dc.subject | Mechanical properties | - |
dc.title | Reaction pathways, activation energies and mechanical properties of hybridcomposites synthesized in-situ from Al-TiO₂-C powder mixtures | - |
dc.title.alternative | Reaction pathways, activation energies and mechanical properties of hybridcomposites synthesized in-situ from Al-TiO(2)-C powder mixtures | - |
dc.type | Journal article | - |
dc.identifier.doi | 10.1016/j.matchemphys.2012.09.052 | - |
pubs.publication-status | Published | - |
Appears in Collections: | Aurora harvest Materials Research Group publications Mechanical Engineering publications |
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