Influence of Melt Infiltration Parameters on Structural and Mechanical Properties of Al-4.3wt.%Cu-EP Syntactic Foam
The present research concerns fabrication of Al-4.3wt.%Cu metal syntactic foams using expanded perlite particles (EPPs). A gas pressure infiltration technique was employed to fabricate the aluminium syntactic foams under different infiltration temperatures and pressures. Ambient air pressure and 750...
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MDPI AG
2023-07-01
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| Series: | Metals |
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| Online Access: | https://www.mdpi.com/2075-4701/13/8/1345 |
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| author | Behzad Niroumand Amir Jazini Dorcheh |
| author_facet | Behzad Niroumand Amir Jazini Dorcheh |
| author_sort | Behzad Niroumand |
| collection | DOAJ |
| description | The present research concerns fabrication of Al-4.3wt.%Cu metal syntactic foams using expanded perlite particles (EPPs). A gas pressure infiltration technique was employed to fabricate the aluminium syntactic foams under different infiltration temperatures and pressures. Ambient air pressure and 750 °C were identified as the favoured processing conditions for full infiltration of the melt. The average density and EP volume percentage of the fabricated foams were measured to be about 1.55 g/cm<sup>3</sup> and 50.3%, respectively. Melt infiltration is believed to be mainly controlled by the breakage of the aluminium oxide layer on the melt surface and melt viscosity. Preferential infiltration of the melt between the mould wall and the EP particles bed complemented by radial melt infiltration toward the centre of the samples was identified. The effects of EP particles on growth of the nucleated primary α-aluminium phase were discussed. XRD and EDS analyses suggested some chemical reactions at the interface of EPPs with the molten aluminium. T6 heat treatment in the ambient atmosphere improved the average compressive tensile strength, plateau stress, and absorption capacity of the syntactic foams by more than 100%. Uniform deformation and similar densification strains (about 40%) of the as-fabricated and heat-treated syntactic foams during the compression test suggested uniform distribution of EP particles and metallic struts in the aluminium alloy matrix. |
| first_indexed | 2024-03-10T23:44:41Z |
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| id | doaj.art-7dbc666781f64252a5af397022bc3871 |
| institution | Directory Open Access Journal |
| issn | 2075-4701 |
| language | English |
| last_indexed | 2024-03-10T23:44:41Z |
| publishDate | 2023-07-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Metals |
| spelling | doaj.art-7dbc666781f64252a5af397022bc38712023-11-19T02:09:51ZengMDPI AGMetals2075-47012023-07-01138134510.3390/met13081345Influence of Melt Infiltration Parameters on Structural and Mechanical Properties of Al-4.3wt.%Cu-EP Syntactic FoamBehzad Niroumand0Amir Jazini Dorcheh1Department of Materials Engineering, Isfahan University of Technology, Isfahan 8415683111, IranDepartment of Materials Engineering, Isfahan University of Technology, Isfahan 8415683111, IranThe present research concerns fabrication of Al-4.3wt.%Cu metal syntactic foams using expanded perlite particles (EPPs). A gas pressure infiltration technique was employed to fabricate the aluminium syntactic foams under different infiltration temperatures and pressures. Ambient air pressure and 750 °C were identified as the favoured processing conditions for full infiltration of the melt. The average density and EP volume percentage of the fabricated foams were measured to be about 1.55 g/cm<sup>3</sup> and 50.3%, respectively. Melt infiltration is believed to be mainly controlled by the breakage of the aluminium oxide layer on the melt surface and melt viscosity. Preferential infiltration of the melt between the mould wall and the EP particles bed complemented by radial melt infiltration toward the centre of the samples was identified. The effects of EP particles on growth of the nucleated primary α-aluminium phase were discussed. XRD and EDS analyses suggested some chemical reactions at the interface of EPPs with the molten aluminium. T6 heat treatment in the ambient atmosphere improved the average compressive tensile strength, plateau stress, and absorption capacity of the syntactic foams by more than 100%. Uniform deformation and similar densification strains (about 40%) of the as-fabricated and heat-treated syntactic foams during the compression test suggested uniform distribution of EP particles and metallic struts in the aluminium alloy matrix.https://www.mdpi.com/2075-4701/13/8/1345metal syntactic foaminfiltration castingexpanded perlite (EP)Al-4.3wt.%Cu-EP foammicrostructuremechanical properties |
| spellingShingle | Behzad Niroumand Amir Jazini Dorcheh Influence of Melt Infiltration Parameters on Structural and Mechanical Properties of Al-4.3wt.%Cu-EP Syntactic Foam Metals metal syntactic foam infiltration casting expanded perlite (EP) Al-4.3wt.%Cu-EP foam microstructure mechanical properties |
| title | Influence of Melt Infiltration Parameters on Structural and Mechanical Properties of Al-4.3wt.%Cu-EP Syntactic Foam |
| title_full | Influence of Melt Infiltration Parameters on Structural and Mechanical Properties of Al-4.3wt.%Cu-EP Syntactic Foam |
| title_fullStr | Influence of Melt Infiltration Parameters on Structural and Mechanical Properties of Al-4.3wt.%Cu-EP Syntactic Foam |
| title_full_unstemmed | Influence of Melt Infiltration Parameters on Structural and Mechanical Properties of Al-4.3wt.%Cu-EP Syntactic Foam |
| title_short | Influence of Melt Infiltration Parameters on Structural and Mechanical Properties of Al-4.3wt.%Cu-EP Syntactic Foam |
| title_sort | influence of melt infiltration parameters on structural and mechanical properties of al 4 3wt cu ep syntactic foam |
| topic | metal syntactic foam infiltration casting expanded perlite (EP) Al-4.3wt.%Cu-EP foam microstructure mechanical properties |
| url | https://www.mdpi.com/2075-4701/13/8/1345 |
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