The influence of Iron and Aluminium Powder Pressing on the Course of Shrinkage and Properties of the Fe40Al Phase Obtained by Reaction Sintering
The effect of the compaction rate on the structure, microstructure and properties of Fe-Al sinters obtained during the SHS reaction is presented in this paper. It was found that increasing the uniaxial pressing pressure led to the increase of the contact area between iron and aluminium particles, wh...
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| Format: | Article |
| Language: | English |
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Polish Academy of Sciences
2022-02-01
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| Series: | Archives of Metallurgy and Materials |
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| Online Access: | https://journals.pan.pl/Content/122514/PDF/AMM-2022-1-15-Siemiaszko.pdf |
| _version_ | 1811313374071357440 |
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| author | M. Berendt-Marchel D. Siemiaszko |
| author_facet | M. Berendt-Marchel D. Siemiaszko |
| author_sort | M. Berendt-Marchel |
| collection | DOAJ |
| description | The effect of the compaction rate on the structure, microstructure and properties of Fe-Al sinters obtained during the SHS reaction is presented in this paper. It was found that increasing the uniaxial pressing pressure led to the increase of the contact area between iron and aluminium particles, which improved the conduction and lowered heat losses during the self-propagating high-temperature synthesis (SHS) reaction and thus result with a sintered material with an improved phase homogeneity. On the other hand, an increase in the pressing pressure causes air be trapped in the pores and later on reacts with iron and aluminium to form oxides. In this work, the shrinkage course was analysed at six different pressing pressures: 50, 100, 150, 200, 300 and 400 MPa. The green compacts were then subjected to the PAIS process (pressure-assisted induction sintering) at a temperature of 1000°C under a load of 100 kN for 5 min. Such prepared samples were subjected to density, porosity, and microhardness (HV0.1) measurements. X-ray diffraction phase analysis and SEM observations were performed together with EDS chemical composition measurements. For studied chemical composition of the samples and sample geometry, 200 MPa compacting pressure was found to be optimal in order to obtain the best sample homogeneity. |
| first_indexed | 2024-04-13T10:52:38Z |
| format | Article |
| id | doaj.art-bafb853806954abca30477ead087977a |
| institution | Directory Open Access Journal |
| issn | 2300-1909 |
| language | English |
| last_indexed | 2024-04-13T10:52:38Z |
| publishDate | 2022-02-01 |
| publisher | Polish Academy of Sciences |
| record_format | Article |
| series | Archives of Metallurgy and Materials |
| spelling | doaj.art-bafb853806954abca30477ead087977a2022-12-22T02:49:36ZengPolish Academy of SciencesArchives of Metallurgy and Materials2300-19092022-02-01vol. 67No 1121126https://doi.org/10.24425/amm.2022.137480The influence of Iron and Aluminium Powder Pressing on the Course of Shrinkage and Properties of the Fe40Al Phase Obtained by Reaction SinteringM. Berendt-Marchel0D. Siemiaszko1https://orcid.org/0000-0002-2887-7774Military University of Technology, 2 Gen. Sylwestra Kaliskiego Str., 00-908 Warszawa, PolandMilitary University of Technology, 2 Gen. Sylwestra Kaliskiego Str., 00-908 Warszawa, PolandThe effect of the compaction rate on the structure, microstructure and properties of Fe-Al sinters obtained during the SHS reaction is presented in this paper. It was found that increasing the uniaxial pressing pressure led to the increase of the contact area between iron and aluminium particles, which improved the conduction and lowered heat losses during the self-propagating high-temperature synthesis (SHS) reaction and thus result with a sintered material with an improved phase homogeneity. On the other hand, an increase in the pressing pressure causes air be trapped in the pores and later on reacts with iron and aluminium to form oxides. In this work, the shrinkage course was analysed at six different pressing pressures: 50, 100, 150, 200, 300 and 400 MPa. The green compacts were then subjected to the PAIS process (pressure-assisted induction sintering) at a temperature of 1000°C under a load of 100 kN for 5 min. Such prepared samples were subjected to density, porosity, and microhardness (HV0.1) measurements. X-ray diffraction phase analysis and SEM observations were performed together with EDS chemical composition measurements. For studied chemical composition of the samples and sample geometry, 200 MPa compacting pressure was found to be optimal in order to obtain the best sample homogeneity.https://journals.pan.pl/Content/122514/PDF/AMM-2022-1-15-Siemiaszko.pdfintermetallicpowder metallurgyreaction sinteringmechanical properties |
| spellingShingle | M. Berendt-Marchel D. Siemiaszko The influence of Iron and Aluminium Powder Pressing on the Course of Shrinkage and Properties of the Fe40Al Phase Obtained by Reaction Sintering Archives of Metallurgy and Materials intermetallic powder metallurgy reaction sintering mechanical properties |
| title | The influence of Iron and Aluminium Powder Pressing on the Course of Shrinkage and Properties of the Fe40Al Phase Obtained by Reaction Sintering |
| title_full | The influence of Iron and Aluminium Powder Pressing on the Course of Shrinkage and Properties of the Fe40Al Phase Obtained by Reaction Sintering |
| title_fullStr | The influence of Iron and Aluminium Powder Pressing on the Course of Shrinkage and Properties of the Fe40Al Phase Obtained by Reaction Sintering |
| title_full_unstemmed | The influence of Iron and Aluminium Powder Pressing on the Course of Shrinkage and Properties of the Fe40Al Phase Obtained by Reaction Sintering |
| title_short | The influence of Iron and Aluminium Powder Pressing on the Course of Shrinkage and Properties of the Fe40Al Phase Obtained by Reaction Sintering |
| title_sort | influence of iron and aluminium powder pressing on the course of shrinkage and properties of the fe40al phase obtained by reaction sintering |
| topic | intermetallic powder metallurgy reaction sintering mechanical properties |
| url | https://journals.pan.pl/Content/122514/PDF/AMM-2022-1-15-Siemiaszko.pdf |
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