Microstructure and Properties of TiAl-Based Alloys Melted in Graphite Crucible
This paper presents the chemical and phase composition, microstructure, and selected properties both at room temperature and at the temperature corresponding to the expected operating conditions of three successive generations of TiAl-based alloys (Ti-47Al-2W-0.5Si, Ti-45Al-8Nb-0.5(B,C), and Ti-45Al...
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| Format: | Article |
| Language: | English |
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MDPI AG
2021-04-01
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| Series: | Metals |
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| Online Access: | https://www.mdpi.com/2075-4701/11/4/669 |
| _version_ | 1797537026350776320 |
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| author | Wojciech Szkliniarz Agnieszka Szkliniarz |
| author_facet | Wojciech Szkliniarz Agnieszka Szkliniarz |
| author_sort | Wojciech Szkliniarz |
| collection | DOAJ |
| description | This paper presents the chemical and phase composition, microstructure, and selected properties both at room temperature and at the temperature corresponding to the expected operating conditions of three successive generations of TiAl-based alloys (Ti-47Al-2W-0.5Si, Ti-45Al-8Nb-0.5(B,C), and Ti-45Al-5Nb-2Cr-1Mo-0.5(B,C)-0.2Si) melted in a vacuum induction furnace with high-density isostatic pressed graphite crucibles. The obtained results of mechanical and physical properties of the produced alloys were compared to the properties of reference alloys with similar chemical composition and melted in a cold copper crucible furnace. The effect of increased carbon content in the produced alloys due to the degradation of the graphite crucible during melting is higher strength properties, lower plastic properties, higher coefficient of thermal expansion, and improved creep resistance. It was shown that the proposed technology could be successfully used in the production of different generation TiAl-based intermetallic alloys. |
| first_indexed | 2024-03-10T12:09:15Z |
| format | Article |
| id | doaj.art-06e4c2cf131d48e69a30e43e4b8c72b0 |
| institution | Directory Open Access Journal |
| issn | 2075-4701 |
| language | English |
| last_indexed | 2024-03-10T12:09:15Z |
| publishDate | 2021-04-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Metals |
| spelling | doaj.art-06e4c2cf131d48e69a30e43e4b8c72b02023-11-21T16:18:15ZengMDPI AGMetals2075-47012021-04-0111466910.3390/met11040669Microstructure and Properties of TiAl-Based Alloys Melted in Graphite CrucibleWojciech Szkliniarz0Agnieszka Szkliniarz1Faculty of Materials Engineering, Silesian University of Technology, Krasińskiego 8, 40-019 Katowice, PolandFaculty of Materials Engineering, Silesian University of Technology, Krasińskiego 8, 40-019 Katowice, PolandThis paper presents the chemical and phase composition, microstructure, and selected properties both at room temperature and at the temperature corresponding to the expected operating conditions of three successive generations of TiAl-based alloys (Ti-47Al-2W-0.5Si, Ti-45Al-8Nb-0.5(B,C), and Ti-45Al-5Nb-2Cr-1Mo-0.5(B,C)-0.2Si) melted in a vacuum induction furnace with high-density isostatic pressed graphite crucibles. The obtained results of mechanical and physical properties of the produced alloys were compared to the properties of reference alloys with similar chemical composition and melted in a cold copper crucible furnace. The effect of increased carbon content in the produced alloys due to the degradation of the graphite crucible during melting is higher strength properties, lower plastic properties, higher coefficient of thermal expansion, and improved creep resistance. It was shown that the proposed technology could be successfully used in the production of different generation TiAl-based intermetallic alloys.https://www.mdpi.com/2075-4701/11/4/669TiAl-based alloysinduction meltinggraphite cruciblesmicrostructuremechanical properties |
| spellingShingle | Wojciech Szkliniarz Agnieszka Szkliniarz Microstructure and Properties of TiAl-Based Alloys Melted in Graphite Crucible Metals TiAl-based alloys induction melting graphite crucibles microstructure mechanical properties |
| title | Microstructure and Properties of TiAl-Based Alloys Melted in Graphite Crucible |
| title_full | Microstructure and Properties of TiAl-Based Alloys Melted in Graphite Crucible |
| title_fullStr | Microstructure and Properties of TiAl-Based Alloys Melted in Graphite Crucible |
| title_full_unstemmed | Microstructure and Properties of TiAl-Based Alloys Melted in Graphite Crucible |
| title_short | Microstructure and Properties of TiAl-Based Alloys Melted in Graphite Crucible |
| title_sort | microstructure and properties of tial based alloys melted in graphite crucible |
| topic | TiAl-based alloys induction melting graphite crucibles microstructure mechanical properties |
| url | https://www.mdpi.com/2075-4701/11/4/669 |
| work_keys_str_mv | AT wojciechszkliniarz microstructureandpropertiesoftialbasedalloysmeltedingraphitecrucible AT agnieszkaszkliniarz microstructureandpropertiesoftialbasedalloysmeltedingraphitecrucible |