The creep behaviour of platinum-based γ/γ′ analogues of nickel-based superalloys at 1300°C
| Autor: | I.M Wolff, D Freund, Bernd Fischer, Rainer Völkl, R. Süss, P Ellis, P.J Hill |
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| Rok vydání: | 2002 |
| Předmět: |
Materials science
Scanning electron microscope Mechanical Engineering Alloy Metallurgy chemistry.chemical_element engineering.material Condensed Matter Physics Superalloy Matrix (chemical analysis) Creep chemistry Mechanics of Materials engineering General Materials Science Ductility Platinum Ternary operation |
| Zdroj: | Materials Science and Engineering: A. 338:133-141 |
| ISSN: | 0921-5093 |
| DOI: | 10.1016/s0921-5093(02)00068-0 |
| Popis: | The creep behaviour of several ternary Pt–Al–Z alloys (Z=Cr, Ru and Ir) at 1300 °C was investigated by conducting stress–rupture tests. The ternary elements were selected either to stabilise the L1 2 form of Pt 3 Al, or as solid–solution strengthening elements for the Pt matrix. The effects of ternary alloying elements on the high-temperature mechanical behaviour of Pt-based (Pt)/Pt 3 Al alloys are critical. The ferritic ODS alloy PM2000 was used as a benchmark. The tested samples were examined using scanning electron microscopy. The results are very promising, particularly those for the Pt 86 :Al 10 :Cr 4 alloy, which showed very good stress–rupture strength. The Pt–Al–Z alloys had lower strength than PM2000, but far superior ductility. |
| Databáze: | OpenAIRE |
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