Solid Solution Strengthening of Mo, Re, Ta and W in Ni during High-Temperature Creep
Solid solution strengthening of the unordered γ matrix phase by alloying elements is of great importance during creep of Ni-based superalloys, particularly at high temperatures above 1000 °C. To study the role of different potent solutes, we have conducted creep experiments on binary Ni-2X alloys (X...
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MDPI AG
2021-11-01
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| Series: | Metals |
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| Online Access: | https://www.mdpi.com/2075-4701/11/12/1909 |
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| author | Lukas Haußmann Hamad ur Rehman Dorothea Matschkal Mathias Göken Steffen Neumeier |
| author_facet | Lukas Haußmann Hamad ur Rehman Dorothea Matschkal Mathias Göken Steffen Neumeier |
| author_sort | Lukas Haußmann |
| collection | DOAJ |
| description | Solid solution strengthening of the unordered γ matrix phase by alloying elements is of great importance during creep of Ni-based superalloys, particularly at high temperatures above 1000 °C. To study the role of different potent solutes, we have conducted creep experiments on binary Ni-2X alloys (X = Mo, Re, Ta, W) at 1000 °C, 1050 °C, and 1100 °C at a constant stress of 20 MPa. Compared to mechanical tests below 800 °C, where the size of the elements mostly determines the solid solution hardening contribution, the strengthening contribution of the different alloying elements above 1000 °C directly correlates with their diffusivity. Therefore, elements such as Ta that lead to strong solid solution hardening at low temperatures become less effective at higher temperatures and are exceeded by slower diffusing elements, such as Re. |
| first_indexed | 2024-03-10T03:35:34Z |
| format | Article |
| id | doaj.art-c973c9ccbdad43f4aade3bf6b2f37840 |
| institution | Directory Open Access Journal |
| issn | 2075-4701 |
| language | English |
| last_indexed | 2024-03-10T03:35:34Z |
| publishDate | 2021-11-01 |
| publisher | MDPI AG |
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| series | Metals |
| spelling | doaj.art-c973c9ccbdad43f4aade3bf6b2f378402023-11-23T09:32:47ZengMDPI AGMetals2075-47012021-11-011112190910.3390/met11121909Solid Solution Strengthening of Mo, Re, Ta and W in Ni during High-Temperature CreepLukas Haußmann0Hamad ur Rehman1Dorothea Matschkal2Mathias Göken3Steffen Neumeier4Department of Materials Science & Engineering, Institute I: General Materials Properties, Friedrich-Alexander-Universität Erlangen-Nürnberg, 91058 Erlangen, GermanyDepartment of Materials Science & Engineering, Institute I: General Materials Properties, Friedrich-Alexander-Universität Erlangen-Nürnberg, 91058 Erlangen, GermanyDepartment of Materials Science & Engineering, Institute I: General Materials Properties, Friedrich-Alexander-Universität Erlangen-Nürnberg, 91058 Erlangen, GermanyDepartment of Materials Science & Engineering, Institute I: General Materials Properties, Friedrich-Alexander-Universität Erlangen-Nürnberg, 91058 Erlangen, GermanyDepartment of Materials Science & Engineering, Institute I: General Materials Properties, Friedrich-Alexander-Universität Erlangen-Nürnberg, 91058 Erlangen, GermanySolid solution strengthening of the unordered γ matrix phase by alloying elements is of great importance during creep of Ni-based superalloys, particularly at high temperatures above 1000 °C. To study the role of different potent solutes, we have conducted creep experiments on binary Ni-2X alloys (X = Mo, Re, Ta, W) at 1000 °C, 1050 °C, and 1100 °C at a constant stress of 20 MPa. Compared to mechanical tests below 800 °C, where the size of the elements mostly determines the solid solution hardening contribution, the strengthening contribution of the different alloying elements above 1000 °C directly correlates with their diffusivity. Therefore, elements such as Ta that lead to strong solid solution hardening at low temperatures become less effective at higher temperatures and are exceeded by slower diffusing elements, such as Re.https://www.mdpi.com/2075-4701/11/12/1909nickeldiffusionsolid solution hardeningcreep |
| spellingShingle | Lukas Haußmann Hamad ur Rehman Dorothea Matschkal Mathias Göken Steffen Neumeier Solid Solution Strengthening of Mo, Re, Ta and W in Ni during High-Temperature Creep Metals nickel diffusion solid solution hardening creep |
| title | Solid Solution Strengthening of Mo, Re, Ta and W in Ni during High-Temperature Creep |
| title_full | Solid Solution Strengthening of Mo, Re, Ta and W in Ni during High-Temperature Creep |
| title_fullStr | Solid Solution Strengthening of Mo, Re, Ta and W in Ni during High-Temperature Creep |
| title_full_unstemmed | Solid Solution Strengthening of Mo, Re, Ta and W in Ni during High-Temperature Creep |
| title_short | Solid Solution Strengthening of Mo, Re, Ta and W in Ni during High-Temperature Creep |
| title_sort | solid solution strengthening of mo re ta and w in ni during high temperature creep |
| topic | nickel diffusion solid solution hardening creep |
| url | https://www.mdpi.com/2075-4701/11/12/1909 |
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