Making iron aluminides out of scrap
The abundance of iron and aluminum raw materials is often quoted as a strategic advantage of iron aluminides against other competing materials (not only stainless steels, but also nickel and titanium aluminides). These raw materials, however, are not only abundant in the form of ores in earth's...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2014-04-01
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| Series: | Journal of Materials Research and Technology |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2238785414000027 |
| _version_ | 1818188311872667648 |
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| author | Doris Feijó Leão Borges Denise Crocce Romano Espinosa Cláudio Geraldo Schön |
| author_facet | Doris Feijó Leão Borges Denise Crocce Romano Espinosa Cláudio Geraldo Schön |
| author_sort | Doris Feijó Leão Borges |
| collection | DOAJ |
| description | The abundance of iron and aluminum raw materials is often quoted as a strategic advantage of iron aluminides against other competing materials (not only stainless steels, but also nickel and titanium aluminides). These raw materials, however, are not only abundant in the form of ores in earth's crust, but also as scrap produced in the extensive technological activity associated with these base metals. The present work reports results of two prospective experiments designed for obtaining iron aluminides exclusively from readily available scrap (aluminum cans, carbon steel strips and stainless steel sheet metal forming residues, this last as a source of chromium and molybdenum). Two base alloys with nominal composition Fe–30Al–6Cr and different carbon contents were molten in a laboratory induction furnace with no atmosphere protection other than blowing Argon over the melt surface. The produced ingots were characterized concerning their microstructures and final composition, which allows estimating the incorporation efficiency of the alloying elements using this processing route.
Oxidation tests at the temperature range of 800–1100 °C under air were performed to demonstrate that these alloys show similar behavior as the ones obtained using conventional processing routes. The results are discussed concerning the viability of this low-cost processing route for the industrial production of iron aluminides. |
| first_indexed | 2024-12-11T23:24:55Z |
| format | Article |
| id | doaj.art-a827f1815f6c4f05ae5c8fea9f961a74 |
| institution | Directory Open Access Journal |
| issn | 2238-7854 |
| language | English |
| last_indexed | 2024-12-11T23:24:55Z |
| publishDate | 2014-04-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Materials Research and Technology |
| spelling | doaj.art-a827f1815f6c4f05ae5c8fea9f961a742022-12-22T00:46:13ZengElsevierJournal of Materials Research and Technology2238-78542014-04-013210110610.1016/j.jmrt.2013.12.002Making iron aluminides out of scrapDoris Feijó Leão Borges0Denise Crocce Romano Espinosa1Cláudio Geraldo Schön2Metallurgy and Materials Coordination, Instituto Federal do Espírito Santo, Vitória, ES, BrazilDepartment of Metallurgical and Materials Engineering, Escola Politécnica da Universidade de São Paulo, São Paulo, SP, BrazilDepartment of Metallurgical and Materials Engineering, Escola Politécnica da Universidade de São Paulo, São Paulo, SP, BrazilThe abundance of iron and aluminum raw materials is often quoted as a strategic advantage of iron aluminides against other competing materials (not only stainless steels, but also nickel and titanium aluminides). These raw materials, however, are not only abundant in the form of ores in earth's crust, but also as scrap produced in the extensive technological activity associated with these base metals. The present work reports results of two prospective experiments designed for obtaining iron aluminides exclusively from readily available scrap (aluminum cans, carbon steel strips and stainless steel sheet metal forming residues, this last as a source of chromium and molybdenum). Two base alloys with nominal composition Fe–30Al–6Cr and different carbon contents were molten in a laboratory induction furnace with no atmosphere protection other than blowing Argon over the melt surface. The produced ingots were characterized concerning their microstructures and final composition, which allows estimating the incorporation efficiency of the alloying elements using this processing route. Oxidation tests at the temperature range of 800–1100 °C under air were performed to demonstrate that these alloys show similar behavior as the ones obtained using conventional processing routes. The results are discussed concerning the viability of this low-cost processing route for the industrial production of iron aluminides.http://www.sciencedirect.com/science/article/pii/S2238785414000027Iron aluminidesOxidationCastingMicrostructure |
| spellingShingle | Doris Feijó Leão Borges Denise Crocce Romano Espinosa Cláudio Geraldo Schön Making iron aluminides out of scrap Journal of Materials Research and Technology Iron aluminides Oxidation Casting Microstructure |
| title | Making iron aluminides out of scrap |
| title_full | Making iron aluminides out of scrap |
| title_fullStr | Making iron aluminides out of scrap |
| title_full_unstemmed | Making iron aluminides out of scrap |
| title_short | Making iron aluminides out of scrap |
| title_sort | making iron aluminides out of scrap |
| topic | Iron aluminides Oxidation Casting Microstructure |
| url | http://www.sciencedirect.com/science/article/pii/S2238785414000027 |
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